Contacts of the helix formed by residues 26 - 73 (chain A) in PDB entry 2NCA


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ALA 26 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  THR*     1.3    80.0    -      -       +      +
     27A  SER*     1.3    67.0    +      -       -      +
     28A  LEU      3.0     3.8    +      -       -      -
     29A  PHE*     3.1    11.5    +      -       +      +
     30A  ARG*     3.0    32.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 27 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  ASN      4.3     2.2    -      -       -      -
     23A  ILE*     3.6    17.6    -      -       -      -
     24A  ASP*     2.9    28.5    +      -       -      +
     25A  THR      3.6     3.8    +      -       -      -
     26A  ALA*     1.3    75.3    +      -       -      +
     28A  LEU*     1.3    52.2    +      -       -      +
     30A  ARG*     4.2     7.4    -      -       -      +
     31A  TRP*     2.8    53.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 28 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  ILE*     3.5    43.2    -      -       +      +
     25A  THR      3.8    13.1    +      -       -      +
     26A  ALA      3.0     0.4    +      -       -      -
     27A  SER*     1.3    80.1    +      -       -      +
     29A  PHE*     1.3    72.2    +      -       +      +
     31A  TRP*     3.8     1.6    -      -       -      +
     32A  ARG*     2.9    37.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 29 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  THR      4.0    17.5    -      -       -      -
     26A  ALA*     3.1     9.4    +      -       +      +
     28A  LEU*     1.3    93.1    -      -       +      +
     30A  ARG*     1.3    64.8    +      -       +      +
     32A  ARG*     3.1     7.8    +      -       -      +
     33A  HIS*     3.0    41.5    +      +       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 30 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  ALA*     3.0    26.2    +      -       +      +
     27A  SER*     3.8     7.6    -      -       -      +
     29A  PHE*     1.3    77.7    -      -       +      +
     31A  TRP*     1.3    58.6    +      -       +      +
     33A  HIS*     4.0     3.3    -      -       -      +
     34A  GLN*     3.0    57.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 31 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  ASN*     3.8    16.4    +      -       +      +
     23A  ILE*     3.7    20.4    -      -       +      -
     27A  SER*     2.8    41.2    +      -       -      +
     28A  LEU      3.9     2.5    -      -       -      +
     30A  ARG*     1.3    74.6    -      -       +      +
     32A  ARG*     1.3    53.5    +      -       -      +
     34A  GLN*     3.4    20.4    -      -       +      -
     35A  ALA*     2.8    39.6    +      -       +      +
    115A  ASN*     5.1    12.8    -      -       -      -
    116A  VAL*     6.1     2.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 32 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  LEU*     2.9    24.7    +      -       +      +
     29A  PHE*     3.1    10.1    +      -       +      +
     31A  TRP*     1.3    78.6    -      -       -      +
     33A  HIS*     1.3    66.3    +      -       +      +
     35A  ALA*     3.5     4.6    -      -       -      +
     36A  ARG*     3.0    45.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 33 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  PHE*     3.0    34.5    +      +       +      +
     30A  ARG*     4.0     3.8    -      -       -      +
     32A  ARG*     1.3    80.8    -      -       +      +
     34A  GLN*     1.3    64.9    +      -       +      +
     36A  ARG*     3.3    11.0    +      -       +      +
     37A  VAL*     3.0    34.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 34 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  ARG*     3.0    53.4    +      -       -      +
     31A  TRP*     3.4    29.0    +      -       +      +
     33A  HIS*     1.3    78.0    -      -       +      +
     35A  ALA*     1.3    58.2    +      -       -      +
     37A  VAL*     3.4     6.5    +      -       -      +
     38A  GLU*     2.8    31.1    +      -       -      +
    114A  TRP      5.5     1.0    -      -       -      +
    115A  ASN      4.9     4.9    -      -       -      +
    116A  VAL      4.7     3.0    +      -       -      -
    117A  ASP*     3.7    38.0    +      -       -      +
    118A  THR*     5.8     0.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 35 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  TRP*     2.8    27.2    +      -       +      +
     32A  ARG*     3.5     6.5    -      -       -      +
     34A  GLN*     1.3    73.5    -      -       -      +
     36A  ARG*     1.3    63.7    +      -       -      +
     38A  GLU*     3.0    13.1    +      -       -      +
     39A  ARG*     3.0    42.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 36 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  ARG*     3.0    35.1    +      -       -      +
     33A  HIS*     3.6    12.0    -      -       -      +
     35A  ALA*     1.3    75.3    -      -       -      +
     37A  VAL*     1.3    61.3    +      -       +      +
     39A  ARG*     3.5     4.3    +      -       -      +
     40A  MET*     2.8    35.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 37 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  HIS*     3.0    24.2    +      -       +      +
     34A  GLN*     3.7     6.1    -      -       -      +
     36A  ARG*     1.3    77.0    -      -       +      +
     38A  GLU*     1.3    64.2    +      -       -      +
     40A  MET*     3.3    25.3    -      -       +      +
     41A  GLU*     3.0    24.4    +      -       -      +
    112A  MET*     4.6     0.2    -      -       -      +
    114A  TRP*     4.8    19.3    -      -       +      +
    117A  ASP*     5.7     5.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 38 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  GLN      2.8    19.8    +      -       -      +
     35A  ALA*     3.0    10.0    +      -       -      +
     37A  VAL*     1.3    77.3    -      -       -      +
     39A  ARG*     1.3    86.0    +      -       -      +
     42A  GLN*     2.9    48.7    +      -       -      +
    110A  LYS      5.3     2.5    -      -       -      -
    112A  MET*     3.1    27.0    -      -       +      +
    114A  TRP*     5.2     2.2    -      -       -      +
    115A  ASN*     2.7    42.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 39 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  ALA*     3.0    29.2    +      -       -      +
     36A  ARG*     4.1     3.6    -      -       -      +
     38A  GLU*     1.3    95.9    +      -       -      +
     40A  MET*     1.3    55.4    +      -       -      +
     42A  GLN*     4.1     8.7    -      -       +      +
     43A  PHE*     2.7    41.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 40 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  ARG*     2.8    24.5    +      -       +      +
     37A  VAL*     3.3    33.7    -      -       +      +
     38A  GLU      3.1     0.2    -      -       -      -
     39A  ARG*     1.3    77.3    -      -       -      +
     41A  GLU*     1.3    82.7    +      -       +      +
     43A  PHE*     4.2     1.0    -      -       -      +
     44A  GLN*     2.9    49.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 41 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  VAL*     3.0    13.8    +      -       -      +
     38A  GLU      4.2     1.6    -      -       -      +
     40A  MET*     1.3    95.3    -      -       +      +
     42A  GLN*     1.3    57.9    +      -       -      +
     44A  GLN*     3.8     3.7    -      -       -      +
     45A  LYS*     2.9    31.2    +      -       -      +
    109A  GLU*     4.0     0.8    -      -       -      +
    112A  MET*     4.4     9.6    -      -       +      -
    114A  TRP*     3.1    32.9    +      -       +      -
    124A  PHE*     3.5    44.7    -      -       +      +
    126A  LYS*     6.0     3.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 42 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  GLU*     2.9    36.2    +      -       -      +
     39A  ARG*     4.0     8.2    -      -       +      +
     41A  GLU*     1.3    74.0    -      -       -      +
     43A  PHE*     1.3    66.1    +      -       +      +
     45A  LYS      3.2     0.5    +      -       -      -
     46A  GLU*     3.0    32.0    +      -       -      +
    106A  ARG*     5.8     1.6    -      -       -      +
    109A  GLU*     2.6    55.7    -      -       +      +
    110A  LYS*     3.2    37.2    -      -       -      +
    112A  MET*     3.8    11.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 43 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  ARG*     2.7    28.2    +      -       +      +
     40A  MET*     4.2     1.6    -      -       -      +
     42A  GLN*     1.3    74.0    -      -       -      +
     44A  GLN*     1.3    64.1    +      -       +      +
     46A  GLU*     3.1    26.1    -      -       +      +
     47A  LYS*     2.8    47.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 44 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  MET*     2.9    40.4    +      -       +      +
     41A  GLU*     3.8     5.8    -      -       -      +
     43A  PHE*     1.3    84.8    -      -       +      +
     45A  LYS*     1.3    62.3    +      -       -      +
     47A  LYS*     3.4    18.3    +      -       -      +
     48A  GLU*     3.0    26.8    +      -       -      +
    126A  LYS*     4.4    21.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 45 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  GLU      2.9    17.2    +      -       -      +
     44A  GLN*     1.3    72.5    -      -       -      +
     46A  GLU*     1.3    68.2    +      -       -      +
     47A  LYS      3.0     0.5    +      -       -      -
     48A  GLU*     3.1    26.0    +      -       -      +
     49A  GLU*     3.0    45.3    +      -       +      +
    105A  MET*     6.3     0.9    -      -       +      -
    109A  GLU*     3.0    28.3    -      -       -      +
    124A  PHE*     3.5    26.9    -      -       +      -
    125A  SER*     3.1    22.6    +      -       -      +
    126A  LYS*     4.2     4.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 46 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  GLN*     3.0    40.0    +      -       -      +
     43A  PHE*     3.1    35.4    -      -       +      +
     45A  LYS*     1.3    76.9    -      -       -      +
     47A  LYS*     1.3    62.2    +      -       -      +
     49A  GLU*     3.5     2.1    +      -       -      +
     50A  LEU*     2.9    36.3    +      -       +      +
    105A  MET*     4.1    27.1    -      -       +      -
    106A  ARG*     4.5    30.6    +      -       +      +
    109A  GLU*     3.6     7.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  PHE*     2.8    39.7    +      -       +      +
     44A  GLN*     3.4    18.5    +      -       -      +
     45A  LYS      3.0     0.2    -      -       -      -
     46A  GLU*     1.3    76.5    -      -       +      +
     48A  GLU*     1.3    89.0    +      -       +      +
     50A  LEU*     2.9    15.9    +      -       -      +
     51A  ASP*     3.0    40.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  GLN      3.0    15.0    +      -       -      +
     45A  LYS*     3.7    19.8    +      -       -      +
     47A  LYS*     1.3    94.3    -      -       +      +
     49A  GLU*     1.3    57.3    +      -       +      +
     51A  ASP*     4.1     3.2    -      -       -      +
     52A  ARG*     2.9    45.5    +      -       -      +
    126A  LYS*     3.3    29.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  LYS*     3.0    38.1    +      -       +      +
     46A  GLU      3.7     0.9    -      -       -      +
     48A  GLU*     1.3    76.3    -      -       +      +
     50A  LEU*     1.3    54.8    +      -       -      +
     52A  ARG*     3.7    17.6    +      -       -      +
     53A  GLY*     2.8    31.5    +      -       -      -
    101A  LYS*     4.5    16.9    +      -       -      +
    105A  MET*     3.5    32.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  GLU*     2.9    24.3    +      -       +      +
     47A  LYS*     2.9     8.8    +      -       -      +
     49A  GLU*     1.3    76.7    -      -       -      +
     51A  ASP*     1.3    57.4    +      -       -      +
     53A  GLY*     3.7     0.6    -      -       -      -
     54A  CYS*     2.7    44.8    +      -       +      +
     98A  TRP*     5.3     6.1    +      -       +      -
    101A  LYS*     5.2     4.0    -      -       -      +
    102A  LEU*     4.7    13.2    -      -       +      -
    105A  MET*     3.9    19.7    -      -       +      -
    106A  ARG*     5.3     9.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LYS*     3.0    38.0    +      -       -      +
     48A  GLU*     4.2     3.8    -      -       -      +
     50A  LEU*     1.3    78.0    -      -       -      +
     52A  ARG*     1.3    57.6    +      -       -      +
     54A  CYS*     3.8     6.0    -      -       -      +
     55A  ARG*     3.0    49.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  GLU*     2.9    33.9    +      -       -      +
     49A  GLU*     3.7    19.3    +      -       -      +
     51A  ASP*     1.3    78.5    -      -       -      +
     53A  GLY*     1.3    57.8    +      -       -      +
     55A  ARG*     4.1     2.9    -      -       -      +
     56A  GLU*     2.9    47.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  GLU      2.8    20.1    +      -       -      -
     50A  LEU      3.8     0.4    -      -       -      -
     52A  ARG*     1.3    75.6    -      -       -      +
     54A  CYS*     1.3    56.4    +      -       -      +
     56A  GLU*     4.4     2.9    -      -       -      -
     57A  CYS*     2.9    33.6    +      -       -      +
     98A  TRP*     3.1    30.8    +      -       -      -
    101A  LYS*     5.8     1.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  LEU*     2.7    26.7    +      -       +      +
     51A  ASP*     3.8     6.7    -      -       -      +
     53A  GLY*     1.3    75.5    -      -       -      +
     55A  ARG*     1.3    62.6    +      -       +      +
     57A  CYS*     3.9     1.9    -      -       -      +
     58A  LYS*     3.0    36.9    +      -       -      +
     98A  TRP*     4.0     3.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  ASP*     3.0    32.3    +      -       -      +
     52A  ARG*     4.2     2.7    -      -       -      +
     54A  CYS*     1.3    76.3    -      -       +      +
     56A  GLU*     1.3    61.1    +      -       -      +
     58A  LYS*     3.9     5.5    -      -       -      +
     59A  ARG*     2.9    31.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  ARG*     2.9    35.8    +      -       +      +
     53A  GLY*     4.2     4.9    -      -       -      +
     55A  ARG*     1.3    77.5    -      -       -      +
     57A  CYS*     1.3    63.2    -      -       -      +
     59A  ARG*     3.3    11.0    +      -       -      +
     60A  LYS*     3.0    34.2    +      -       +      +
     98A  TRP*     5.2     7.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  GLY      2.9    22.4    +      -       -      +
     54A  CYS*     3.9     2.9    -      -       -      +
     56A  GLU*     1.3    77.5    -      -       -      +
     58A  LYS*     1.3    54.7    +      -       -      +
     60A  LYS*     4.8     3.1    -      -       -      -
     61A  VAL*     2.7    48.6    +      -       -      +
     94A  GLU*     3.4    36.6    -      -       -      -
     98A  TRP*     3.7    23.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  CYS*     3.0    25.5    +      -       -      +
     55A  ARG*     3.9     4.9    -      -       -      +
     57A  CYS*     1.3    76.1    -      -       -      +
     59A  ARG*     1.3    55.6    +      -       -      +
     61A  VAL*     4.0     4.2    -      -       -      +
     62A  ALA*     2.7    38.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  ARG      2.9    19.3    +      -       -      +
     56A  GLU*     3.5    10.2    +      -       -      +
     58A  LYS*     1.3    78.4    -      -       -      +
     60A  LYS*     1.3    86.9    +      -       -      +
     62A  ALA*     3.3     5.0    -      -       -      +
     63A  GLU*     3.0    44.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  GLU*     3.0    26.1    +      -       +      +
     57A  CYS*     3.8     3.4    -      -       -      +
     59A  ARG*     1.3   104.0    -      -       -      +
     61A  VAL*     1.3    57.0    +      -       -      +
     63A  GLU*     3.1     4.0    +      -       +      +
     64A  CYS*     2.8    52.9    +      -       -      +
     90A  GLN*     4.6    14.1    +      -       -      +
     94A  GLU*     4.9     9.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  CYS*     2.7    51.7    +      -       -      +
     58A  LYS*     4.0     3.8    -      -       -      +
     60A  LYS*     1.3    72.6    -      -       -      +
     62A  ALA*     1.3    53.9    +      -       -      +
     64A  CYS*     4.0     4.9    -      -       -      +
     65A  GLN*     2.8    48.8    +      -       +      +
     90A  GLN*     5.3     2.0    -      -       -      -
     91A  LEU*     3.5    30.7    -      -       +      -
     94A  GLU*     4.0    19.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  LYS*     2.7    31.3    +      -       +      +
     59A  ARG*     3.3     6.5    -      -       -      +
     61A  VAL*     1.3    73.5    -      -       -      +
     63A  GLU*     1.3    68.0    +      -       +      +
     65A  GLN*     3.6     8.9    -      -       -      +
     66A  ARG*     3.0    38.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ARG*     3.0    37.8    +      -       +      +
     60A  LYS*     3.8     6.1    -      -       +      +
     62A  ALA*     1.3    77.2    -      -       +      +
     64A  CYS*     1.3    65.7    -      -       -      +
     66A  ARG*     3.1    17.9    +      -       -      +
     67A  LYS*     2.9    31.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  LYS*     2.8    36.6    +      -       -      +
     61A  VAL*     4.0     5.2    -      -       -      +
     63A  GLU*     1.3    72.5    -      -       -      +
     65A  GLN*     1.3    62.7    +      -       -      +
     67A  LYS*     3.1    13.2    +      -       -      +
     68A  LEU*     2.9    34.7    +      -       +      +
     90A  GLN*     3.3    36.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  VAL*     2.8    34.7    +      -       +      +
     62A  ALA*     3.6     7.6    -      -       -      +
     64A  CYS*     1.3    72.8    -      -       -      +
     66A  ARG*     1.3    57.9    +      -       +      +
     68A  LEU*     3.2    18.6    -      -       +      +
     69A  LYS*     2.8    45.7    +      -       +      +
     87A  GLU*     5.1     6.5    +      -       -      +
     91A  LEU*     6.1     4.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  ALA*     3.0    30.4    +      -       -      +
     63A  GLU*     3.5    15.7    -      -       -      +
     65A  GLN*     1.3    80.4    +      -       +      +
     67A  LYS*     1.3    55.6    +      -       -      +
     69A  LYS*     3.7    20.2    -      -       -      +
     70A  GLU*     2.9    37.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  GLU*     2.9    20.9    +      -       +      +
     64A  CYS*     3.1    15.4    +      -       -      +
     66A  ARG*     1.3    73.3    -      -       -      +
     68A  LEU*     1.3    66.0    +      -       -      +
     69A  LYS      3.0     1.5    +      -       -      -
     70A  GLU*     3.1     5.8    +      -       -      +
     71A  LEU*     2.9    26.2    +      -       -      +
     83A  ARG*     5.6     4.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  CYS*     2.9    38.0    +      -       +      +
     65A  GLN*     3.2    18.8    -      -       +      +
     67A  LYS*     1.3    75.1    -      -       -      +
     69A  LYS*     1.3    57.3    +      -       +      +
     71A  LEU*     4.1     0.8    -      -       -      +
     72A  GLU*     2.8    38.8    +      -       -      +
     83A  ARG*     4.4    37.7    -      -       +      +
     86A  ALA*     5.3     2.7    -      -       +      -
     87A  GLU*     3.1    60.3    -      -       +      +
     90A  GLN*     5.7     2.9    -      -       +      -
     91A  LEU*     5.7     1.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  GLN*     2.8    27.0    +      -       +      +
     66A  ARG*     3.7    23.6    -      -       -      +
     68A  LEU*     1.3    84.0    -      -       +      +
     70A  GLU*     1.3    74.7    +      -       -      +
     72A  GLU*     3.4    25.0    +      -       -      +
     73A  VAL*     3.6    13.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  ARG*     2.9    22.1    +      -       -      +
     67A  LYS*     3.7     4.5    -      -       -      +
     69A  LYS*     1.3    88.4    -      -       -      +
     71A  LEU*     1.3    58.3    +      -       -      +
     73A  VAL*     2.9    28.9    -      -       +      +
     74A  ALA*     4.9     1.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  LYS      2.9    16.3    +      -       -      +
     68A  LEU      4.1     2.2    -      -       -      +
     70A  GLU*     1.3    76.5    -      -       -      +
     72A  GLU*     1.3    53.3    +      -       -      +
     73A  VAL      2.9     5.6    -      -       -      -
     74A  ALA*     2.7    45.6    +      -       +      +
     75A  GLU      5.2     3.1    -      -       -      +
     79A  ALA*     5.9     5.4    -      -       +      -
     83A  ARG*     4.2    33.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  LEU*     2.8    22.9    +      -       -      +
     69A  LYS*     3.4    19.9    +      -       -      +
     71A  LEU*     1.3    75.9    -      -       -      +
     73A  VAL*     1.3    59.5    +      -       +      +
     74A  ALA      4.0     4.6    -      -       -      +
     80A  GLU*     5.3    14.1    -      -       +      +
     83A  ARG*     5.0    13.4    -      -       +      +
     87A  GLU*     5.2     7.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  LYS*     3.6    15.7    -      -       +      +
     70A  GLU*     2.9    26.0    -      -       +      +
     71A  LEU      2.9     0.6    -      -       -      -
     72A  GLU*     1.3    79.6    -      -       +      +
     74A  ALA*     1.3    66.9    +      -       +      +
     75A  GLU*     3.6     2.3    +      -       -      +
----------------------------------------------------------
 Back to top of page


A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il