Contacts of the helix formed by residues 118 - 144 (chain B) in PDB entry 2P1A


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 ARG 118 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  LEU*     4.1    18.1    +      -       +      +
     59B  ASN*     5.3     4.0    +      -       -      -
     96B  PHE*     3.2    22.4    -      -       +      -
     99B  TYR*     3.4    49.6    +      -       +      -
    103B  GLN*     3.2    49.8    +      -       -      +
    104B  LEU*     3.3     5.8    +      -       -      +
    106B  GLU*     3.0    26.2    +      -       -      +
    108B  LYS*     3.8    42.9    -      -       +      +
    117B  SER*     1.3    72.4    -      -       -      +
    119B  PHE*     1.3    61.3    +      -       -      +
    121B  TRP*     3.3     2.8    +      -       -      +
    122B  LEU      3.0    17.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 119 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MSE      5.4     3.6    -      -       +      -
      2A  PHE*     3.5    54.3    -      +       +      -
      5A  SER*     3.9    15.3    -      -       -      +
    119A  PHE*     3.9    21.5    -      +       -      -
      2B  PHE      3.8    23.3    -      -       -      -
      3B  VAL*     4.1    16.8    -      -       +      -
      6B  ALA*     4.6     7.0    -      -       +      -
     96B  PHE*     4.3     3.1    -      -       -      -
    104B  LEU*     3.0    20.2    +      -       +      +
    117B  SER*     4.1     3.1    -      -       -      +
    118B  ARG*     1.3    74.1    -      -       -      +
    120B  GLU*     1.3    66.8    +      -       -      +
    122B  LEU*     3.1    20.7    +      -       +      +
    123B  LEU*     3.2    42.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 120 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  SER*     3.6    30.2    +      -       -      +
      8A  HIS*     6.0     4.3    -      -       -      +
      9A  GLN*     4.0     2.2    -      -       -      +
    107B  MSE      5.1     6.3    -      -       -      +
    115B  SER      4.9     0.9    -      -       -      +
    116B  TYR*     3.6    16.6    -      -       +      +
    117B  SER*     3.0    45.3    +      -       -      +
    119B  PHE*     1.3    76.4    -      -       -      +
    121B  TRP*     1.3    58.4    +      -       -      +
    123B  LEU*     3.2    10.8    +      -       -      +
    124B  GLU*     3.0    29.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 121 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54B  ASP*     3.0    33.8    +      -       +      -
     55B  LEU*     5.9     0.2    -      -       -      -
     57B  ILE*     3.8    22.0    -      -       +      -
     58B  LEU*     3.7    38.4    -      -       +      +
    112B  TRP*     3.6    24.7    -      +       -      -
    116B  TYR*     3.5    54.2    -      +       +      +
    117B  SER      2.9    16.7    +      -       -      +
    118B  ARG      3.7     4.7    -      -       -      +
    119B  PHE      3.2     0.2    -      -       -      -
    120B  GLU*     1.3    72.5    -      -       -      +
    122B  LEU*     1.3    65.7    +      -       -      +
    124B  GLU*     3.1    20.9    +      -       +      +
    125B  ILE*     3.0    45.9    +      -       +      +
    128B  HIS*     5.8     2.5    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 122 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3B  VAL*     4.3    13.0    -      -       +      +
      6B  ALA*     3.5    31.0    -      -       +      -
      7B  LEU*     3.9    25.6    -      -       +      -
     10B  LEU*     4.9     4.3    -      -       +      -
     92B  LEU*     4.5    13.9    -      -       +      -
     96B  PHE*     3.8    45.5    -      -       +      -
    118B  ARG      3.0     6.5    +      -       -      -
    119B  PHE*     3.1    19.9    +      -       +      +
    121B  TRP*     1.3    76.0    -      -       -      +
    123B  LEU*     1.3    58.3    +      -       +      +
    125B  ILE*     3.1    11.9    +      -       +      +
    126B  VAL*     3.1    30.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 123 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  SER*     3.7    10.8    -      -       -      +
      6A  ALA*     3.5    35.4    -      -       +      +
      9A  GLN*     3.7    18.7    -      -       +      +
    123A  LEU*     3.4    26.2    -      -       +      -
    126A  VAL*     5.1     3.2    -      -       +      +
      6B  ALA*     4.1    15.7    -      -       +      -
    119B  PHE*     3.2    43.8    +      -       +      +
    120B  GLU*     3.2     8.5    +      -       -      +
    122B  LEU*     1.3    75.6    -      -       -      +
    124B  GLU*     1.3    58.8    +      -       -      +
    126B  VAL*     3.5    11.4    +      -       +      +
    127B  ALA*     3.0    27.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 124 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  GLN*     2.9    33.0    +      -       -      +
     12A  VAL*     6.1     0.9    -      -       -      +
    130A  TYR*     5.1     0.3    +      -       -      -
     54B  ASP*     5.2     0.2    -      -       -      -
    116B  TYR*     4.1    29.9    +      -       +      -
    120B  GLU*     3.0    14.5    +      -       +      +
    121B  TRP*     3.1    28.6    +      -       +      +
    123B  LEU*     1.3    74.1    -      -       -      +
    125B  ILE*     1.3    58.1    +      -       -      +
    127B  ALA*     3.8     2.2    -      -       -      +
    128B  HIS*     2.9    30.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 125 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10B  LEU*     4.2    11.9    -      -       +      -
     50B  ILE*     4.1    13.2    -      -       +      +
     51B  CYS*     4.7     2.5    -      -       -      -
     54B  ASP*     3.2    39.0    -      -       +      +
     92B  LEU*     3.9    34.1    -      -       +      -
     96B  PHE*     5.7     0.2    -      -       +      -
    121B  TRP*     3.0    53.8    +      -       +      +
    122B  LEU*     3.1    15.9    +      -       +      +
    124B  GLU*     1.3    73.0    -      -       -      +
    126B  VAL*     1.3    61.7    +      -       -      +
    128B  HIS*     3.3     1.6    +      -       -      +
    129B  PHE*     2.9    30.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 126 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  LEU*     5.1     8.1    -      -       +      +
    126A  VAL*     5.3     4.7    -      -       +      -
    127A  ALA*     4.6    10.1    -      -       +      +
      6B  ALA*     3.6    30.3    -      -       +      +
      9B  GLN*     4.5    10.1    -      -       +      -
     10B  LEU*     4.3    19.5    -      -       +      -
    122B  LEU*     3.1    18.1    +      -       +      +
    123B  LEU*     3.6    15.3    -      -       +      +
    124B  GLU      3.4     0.2    -      -       -      -
    125B  ILE*     1.3    76.7    -      -       +      +
    127B  ALA*     1.3    63.0    +      -       -      +
    129B  PHE*     3.8     0.5    -      -       -      +
    130B  TYR*     3.0    51.0    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 127 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  GLN*     3.5    24.9    -      -       +      +
    126A  VAL*     4.8     2.4    -      -       +      +
    127A  ALA*     6.0     0.4    -      -       -      +
    130A  TYR*     3.4    41.9    -      -       +      +
    123B  LEU      3.0    11.1    +      -       -      +
    124B  GLU*     3.8     4.9    -      -       -      +
    126B  VAL*     1.3    75.8    -      -       -      +
    128B  HIS*     1.3    52.7    -      -       -      +
    130B  TYR*     4.9     0.7    -      -       -      -
    131B  HIS*     2.8    38.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 128 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  HIS*     4.1     8.3    +      +       -      -
     50B  ILE*     3.5    24.2    -      -       +      +
     54B  ASP*     2.9    36.0    +      -       -      +
     70B  TYR*     5.4     4.2    +      -       -      -
    121B  TRP*     5.8     3.2    -      -       -      -
    124B  GLU      2.9    18.9    +      -       -      +
    125B  ILE      3.4     4.9    -      -       -      +
    127B  ALA*     1.3    74.2    -      -       -      +
    129B  PHE*     1.3    58.1    +      -       -      +
    131B  HIS*     3.4     3.9    +      -       -      +
    132B  HIS*     3.0    64.9    +      +       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 129 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10B  LEU*     3.9    20.2    -      -       +      -
     13B  ALA*     3.3    40.4    -      -       +      -
     14B  VAL*     4.0    20.6    -      -       +      -
     17B  SER*     3.5    10.8    -      -       -      -
     47B  LEU*     3.7    29.3    -      -       +      +
     50B  ILE*     3.9    28.5    -      -       +      +
     51B  CYS*     4.5     7.4    -      -       -      -
     85B  MSE      3.9    28.0    -      -       +      -
    125B  ILE      2.9    16.8    +      -       -      +
    126B  VAL      3.8     3.1    -      -       -      +
    128B  HIS*     1.3    78.0    -      -       -      +
    130B  TYR*     1.3    57.3    +      -       -      +
    133B  ARG*     2.8    34.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 130 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127A  ALA*     3.5    52.7    -      -       +      +
    130A  TYR*     4.5     1.6    -      -       +      -
    131A  HIS*     3.5    19.4    +      -       +      +
      9B  GLN*     2.5    42.2    +      -       +      -
     10B  LEU*     4.6     1.3    -      -       -      -
     12B  VAL*     3.8    10.8    -      -       +      +
     13B  ALA*     3.5    23.6    +      -       +      -
    126B  VAL*     3.0    38.7    +      -       +      +
    127B  ALA      4.1     2.2    -      -       -      +
    129B  PHE*     1.3    74.3    -      -       +      +
    131B  HIS*     1.3    65.3    +      -       -      +
    133B  ARG*     3.3    36.3    -      -       -      +
    134B  GLY      2.9    19.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 131 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  TYR*     3.5    18.2    +      +       +      +
    133A  ARG*     3.9    26.8    +      -       +      -
    134A  GLY*     3.5    27.6    +      -       -      -
    137A  HIS*     3.7    23.4    +      +       +      -
    127B  ALA      2.8    23.0    +      -       -      +
    128B  HIS*     3.6     6.1    -      -       -      +
    130B  TYR*     1.3    76.5    -      -       -      +
    132B  HIS*     1.3    75.0    +      +       +      +
    134B  GLY*     3.0    12.5    +      -       -      -
    135B  GLN*     3.1    42.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 132 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  MSE      5.0     1.9    -      -       +      +
     46B  HIS*     3.5    36.0    +      +       +      -
     47B  LEU*     3.8    18.8    -      -       +      -
     50B  ILE*     4.0     2.9    -      -       +      -
    128B  HIS*     3.0    46.9    +      +       -      +
    131B  HIS*     1.3    95.1    -      +       +      +
    133B  ARG*     1.3    58.1    +      -       -      +
    135B  GLN*     3.4    25.5    +      -       -      +
    136B  ILE*     3.2    28.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 133 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  HIS*     4.0    16.1    +      -       +      +
     12B  VAL*     5.6     2.4    -      -       -      +
     13B  ALA*     3.8    17.0    -      -       -      -
     16B  THR*     3.1    28.4    +      -       -      +
     17B  SER*     3.4    22.6    +      -       -      +
     20B  MSE      4.0    15.8    -      -       +      +
     47B  LEU*     3.6    16.2    -      -       +      +
    129B  PHE*     2.8    22.2    +      -       +      +
    130B  TYR*     3.3    37.9    -      -       -      +
    132B  HIS*     1.3    72.7    -      -       -      +
    134B  GLY*     1.3    56.3    +      -       -      +
    136B  ILE*     3.6     4.6    +      -       -      +
    137B  HIS*     2.9    27.6    +      -       +      +
    149B  ILE*     3.2    46.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 134 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  HIS*     3.4    34.3    +      -       -      -
    135A  GLN*     3.3    19.4    -      -       -      +
    130B  TYR      2.9    12.7    +      -       -      -
    131B  HIS      3.0     5.1    +      -       -      -
    133B  ARG*     1.3    74.3    -      -       -      +
    135B  GLN*     1.3    62.6    +      -       -      +
    138B  ILE      3.2    18.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 135 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  GLY*     3.2    21.9    -      -       -      +
    137A  HIS*     2.9    32.7    +      -       -      -
    138A  ILE*     3.6    19.2    -      -       +      +
     43B  MSE      3.7    24.1    -      -       +      +
    131B  HIS*     3.1    37.3    +      -       -      +
    132B  HIS*     3.4    28.3    +      -       -      +
    134B  GLY*     1.3    72.7    -      -       -      +
    136B  ILE*     1.3    63.8    +      -       -      +
    138B  ILE*     3.3     6.8    -      -       -      +
    139B  LEU*     3.3    25.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 136 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  MSE      4.6     3.6    -      -       +      -
     40B  LEU*     3.9    14.5    -      -       +      +
     43B  MSE      3.4    50.0    -      -       +      +
     44B  TYR*     3.4    37.0    -      -       +      -
     47B  LEU*     3.8    28.3    -      -       +      -
    132B  HIS*     3.2    12.9    +      -       +      +
    133B  ARG*     3.7     6.7    -      -       -      +
    135B  GLN*     1.3    79.9    -      -       -      +
    137B  HIS*     1.3    63.2    +      -       -      +
    139B  LEU*     3.1     4.3    +      -       -      +
    140B  LEU*     2.9    32.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 137 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  HIS*     3.9    14.6    -      +       +      -
    135A  GLN*     2.9    28.3    +      -       -      -
     20B  MSE      4.1    16.4    -      -       +      -
    133B  ARG*     2.9    20.5    +      -       +      +
    134B  GLY      3.7     4.7    -      -       -      +
    135B  GLN      3.4     0.4    -      -       -      -
    136B  ILE*     1.3    76.7    -      -       -      +
    138B  ILE*     1.3    57.2    +      -       +      +
    140B  LEU*     3.4     4.6    +      -       -      +
    141B  CYS*     3.1    48.8    +      -       -      -
    146B  ASP*     4.9     2.6    +      -       -      -
    147B  PRO*     4.1    22.2    +      -       +      +
    149B  ILE*     4.1    25.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 138 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     3.7    36.3    -      -       -      +
     43A  MSE      4.8     3.6    -      -       -      -
    135A  GLN*     3.5    35.9    -      -       +      +
    138A  ILE*     3.0    36.8    -      -       +      -
    139A  LEU*     3.8    25.1    -      -       +      -
    134B  GLY      3.2     9.2    +      -       -      +
    135B  GLN      3.3     4.7    -      -       -      +
    137B  HIS*     1.3    77.9    +      -       +      +
    139B  LEU*     1.3    62.1    +      -       -      +
    141B  CYS*     3.4     6.0    +      -       +      +
    142B  GLU*     3.0    38.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 139 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138A  ILE*     3.8    28.7    -      -       +      -
    139A  LEU*     5.2     6.7    -      -       +      -
     34B  ILE*     4.1    25.8    -      -       +      +
     36B  SER*     5.2     1.1    -      -       -      +
     40B  LEU*     3.5    28.9    -      -       +      +
     43B  MSE      4.9     4.7    -      -       -      -
    135B  GLN      3.3    14.6    -      -       -      +
    136B  ILE      3.1     3.2    +      -       -      +
    138B  ILE*     1.3    81.4    -      -       +      +
    140B  LEU*     1.3    57.4    +      -       -      +
    142B  GLU*     4.4     0.4    -      -       -      -
    143B  HIS*     3.0    56.3    +      -       +      +
    144B  MSE      4.3     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 140 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  MSE      3.7    30.3    -      -       +      -
     24B  TYR*     3.6    49.1    -      -       +      +
     29B  LEU*     4.2    13.9    -      -       +      -
     40B  LEU*     3.5    25.6    -      -       +      -
     44B  TYR*     4.4     3.1    -      -       +      -
    136B  ILE*     2.9    30.6    +      -       +      +
    137B  HIS      3.5     6.5    -      -       -      +
    138B  ILE      3.2     0.2    -      -       -      -
    139B  LEU*     1.3    76.6    -      -       -      +
    141B  CYS*     1.3    58.5    +      -       -      +
    144B  MSE      2.9    39.7    +      -       +      +
    145B  LYS      3.4     3.2    -      -       -      +
    147B  PRO*     4.4     3.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 141 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     3.4    31.1    +      -       -      +
    137B  HIS*     3.1    44.2    +      -       -      -
    138B  ILE*     3.4    10.1    +      -       +      +
    140B  LEU*     1.3    74.7    -      -       -      +
    142B  GLU*     1.3    60.3    +      -       -      +
    144B  MSE      3.9     6.9    -      -       -      +
    146B  ASP*     3.8    38.3    +      -       -      +
    147B  PRO*     4.1     4.5    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 142 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  PRO*     5.1     0.5    -      -       -      +
     35A  GLN      4.3     3.6    -      -       -      +
     36A  SER*     2.8    39.2    +      -       -      -
     37A  LYS*     3.8     7.7    +      -       -      +
     38A  ARG*     3.3    27.4    +      -       -      +
    139A  LEU*     4.4    22.4    -      -       +      +
    138B  ILE*     3.0    26.1    +      -       +      +
    139B  LEU*     4.4     0.2    -      -       -      -
    141B  CYS*     1.3    78.3    -      -       -      +
    143B  HIS*     1.3    83.7    +      -       +      +
    144B  MSE      3.8     0.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  LEU*     6.0     2.2    -      -       +      -
     32B  ALA*     4.7     2.7    -      -       +      -
     33B  PRO*     3.8    39.6    -      -       +      +
     34B  ILE*     3.5    42.0    +      -       +      +
    139B  LEU*     3.0    40.3    +      -       +      +
    142B  GLU*     1.3    97.2    +      -       +      +
    144B  MSE      1.3    70.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MSE 144 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  TYR*     3.8    26.5    -      -       +      -
     28B  ASP*     3.7    50.0    -      -       +      +
     29B  LEU*     6.1     0.4    -      -       +      -
     31B  ILE*     6.4     1.3    -      -       -      -
     32B  ALA*     4.1    19.7    -      -       +      -
     40B  LEU*     4.5    10.3    -      -       +      -
    140B  LEU*     2.9    21.9    +      -       +      +
    141B  CYS      3.9     9.2    -      -       -      +
    142B  GLU      4.8     0.3    -      -       -      -
    143B  HIS*     1.3    85.2    -      -       -      +
    145B  LYS*     1.3    70.8    +      -       +      +
    146B  ASP      3.8     0.7    +      -       -      -
----------------------------------------------------------
 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