Contacts of the helix formed by residues 38 - 64 (chain V) in PDB entry 1BFR


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 LYS 38 (chain V).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39E  ARG*     5.2     8.9    -      -       -      +
    157E  GLU*     3.0    29.6    +      -       -      +
     33V  LYS*     5.5     6.5    -      -       +      +
     36V  GLY*     3.0    17.1    +      -       -      +
     37V  LEU*     1.3    70.1    -      -       -      +
     39V  ARG*     1.3    62.7    +      -       -      +
     41V  ASN*     3.1     9.5    +      -       -      +
     42V  ASP*     3.0    29.2    +      -       -      +
    153V  GLN      3.1     6.1    +      -       -      +
    154V  ILE      3.0    24.2    +      -       -      +
    156V  GLU*     3.6    33.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 39 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38Q  LYS*     5.1     9.3    -      -       -      +
    154Q  ILE*     5.8     8.7    +      -       -      +
    155Q  ARG*     3.2    26.5    -      -       -      +
     38V  LYS*     1.3    71.7    -      -       -      +
     40V  LEU*     1.3    71.0    +      -       -      +
     42V  ASP*     3.2     4.2    +      -       -      +
     43V  VAL*     3.1    33.8    +      -       +      +
    133V  TRP*     3.9    13.7    -      -       -      +
    137V  GLU*     3.1    40.0    +      -       -      -
    152V  ALA*     4.0     1.6    -      -       -      -
    153V  GLN*     2.6    55.5    +      -       -      +
    155V  ARG      3.7    12.2    +      -       -      +
    156V  GLU*     4.5     7.9    -      -       -      +
    157V  GLU*     4.2    23.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 40 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32V  PHE*     3.7    38.4    -      -       +      -
     37V  LEU*     3.1    15.7    +      -       +      +
     39V  ARG*     1.3    86.2    -      -       -      +
     41V  ASN*     1.3    64.4    +      -       -      +
     43V  VAL*     4.4     1.7    -      -       -      +
     44V  GLU*     3.0    29.6    +      -       -      +
     83V  VAL*     4.2    11.7    -      -       +      -
     87V  LEU*     5.0     3.6    -      -       +      -
    133V  TRP*     4.1    20.2    -      -       +      -
    149V  TYR*     3.6    28.5    -      -       +      +
    150V  LEU*     5.7     0.2    -      -       +      -
    153V  GLN*     3.5    38.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 41 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29V  ALA*     3.1    33.1    -      -       -      +
     30V  ARG*     2.9    28.0    +      -       -      +
     32V  PHE*     3.7     1.6    -      -       -      +
     33V  LYS*     3.4    37.6    -      -       +      +
     37V  LEU      3.0     8.8    +      -       -      +
     38V  LYS*     3.4    10.0    -      -       -      +
     40V  LEU*     1.3    75.7    -      -       -      +
     42V  ASP*     1.3    74.9    +      -       -      +
     45V  TYR*     2.9    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 42 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38V  LYS*     3.0    14.7    +      -       -      +
     39V  ARG*     3.2     4.9    +      -       -      +
     41V  ASN*     1.3    92.3    +      -       -      +
     43V  VAL*     1.3    61.9    +      -       +      +
     45V  TYR*     3.8     3.2    -      -       -      +
     46V  HIS*     2.7    44.7    +      -       +      +
    156V  GLU*     3.3    38.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 43 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39V  ARG*     3.1    27.8    +      -       +      +
     40V  LEU      4.4     0.7    -      -       -      +
     42V  ASP*     1.3    75.4    -      -       +      +
     44V  GLU*     1.3    62.1    +      -       -      +
     46V  HIS*     3.2     8.4    +      -       +      +
     47V  GLU*     3.0    30.1    +      -       +      +
    133V  TRP*     3.5    55.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 44 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25V  TYR*     3.5    25.6    -      -       -      +
     28V  HIS*     3.3    19.8    -      -       -      +
     29V  ALA*     3.9    18.6    -      -       +      +
     32V  PHE*     3.8    17.1    -      -       +      -
     40V  LEU      3.0    19.9    +      -       -      +
     43V  VAL*     1.3    73.6    -      -       -      +
     45V  TYR*     1.3    63.2    +      -       -      +
     47V  GLU*     3.1     7.6    +      -       -      +
     48V  SER*     2.9    21.5    +      -       -      -
     87V  LEU*     4.4     2.4    -      -       -      +
     90V  ASP*     2.8    28.2    -      -       -      +
    133V  TRP*     3.5    27.8    -      -       +      -
    134V  LEU*     4.1     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 45 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26V  PHE*     3.6    33.0    -      +       -      -
     29V  ALA*     3.5    11.2    -      -       +      +
     30V  ARG*     3.7    28.9    -      -       -      +
     41V  ASN*     2.9    21.0    +      -       -      +
     42V  ASP*     3.8     3.6    -      -       -      +
     44V  GLU*     1.3    75.3    -      -       -      +
     46V  HIS*     1.3    84.4    +      +       -      +
     48V  SER*     3.1     8.4    -      -       -      -
     49V  ILE*     3.0    43.9    +      -       +      +
    200V  HEM      3.6    30.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 46 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42V  ASP*     2.7    35.4    +      -       +      +
     43V  VAL*     3.2     9.5    +      -       +      +
     45V  TYR*     1.3    96.0    -      +       -      +
     47V  GLU*     1.3    64.3    +      -       +      +
     49V  ILE*     3.1    11.2    +      -       +      +
     50V  ASP*     2.9    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 47 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25V  TYR*     3.2    39.3    +      -       +      -
     43V  VAL*     3.0    20.9    +      -       +      +
     44V  GLU*     3.1     9.9    +      -       -      +
     46V  HIS*     1.3    74.6    -      -       +      +
     48V  SER*     1.3    64.3    +      -       -      +
     50V  ASP*     3.2     5.7    +      -       -      +
     51V  GLU*     3.0    28.6    +      -       -      +
    130V  HIS*     3.5    44.2    -      -       +      +
    133V  TRP*     3.8    31.9    -      -       -      +
    134V  LEU*     4.6     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 48 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22V  ILE*     3.2    21.3    +      -       -      +
     25V  TYR*     3.9     9.0    -      -       -      +
     26V  PHE*     3.4    28.0    -      -       -      -
     44V  GLU      2.9    12.5    +      -       -      -
     45V  TYR*     3.1    11.9    -      -       -      -
     47V  GLU*     1.3    75.0    -      -       -      +
     49V  ILE*     1.3    61.9    +      -       -      +
     51V  GLU*     3.1     7.8    +      -       -      +
     52V  MET*     3.0    41.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 49 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45V  TYR*     3.0    55.4    +      -       +      +
     46V  HIS*     3.6    11.9    -      -       +      +
     48V  SER*     1.3    73.8    -      -       -      +
     50V  ASP*     1.3    62.4    +      -       -      +
     52V  MET*     3.2    26.3    -      -       +      +
     53V  LYS*     2.9    31.8    +      -       -      +
    200V  HEM      3.8    51.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 50 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46V  HIS*     2.9    23.1    +      -       -      +
     47V  GLU*     3.5     9.1    -      -       -      +
     49V  ILE*     1.3    71.4    -      -       -      +
     51V  GLU*     1.3    60.0    +      -       -      +
     53V  LYS*     3.4    17.1    +      -       -      +
     54V  HIS*     2.8    42.2    +      -       +      +
    126V  ASP*     5.1     6.9    -      -       -      +
    130V  HIS*     2.8    33.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 51 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18V  GLU*     2.8    11.8    -      -       -      +
     21V  ALA*     3.9    16.3    -      -       +      +
     22V  ILE*     3.6    23.5    -      -       +      +
     25V  TYR*     3.6     9.9    -      -       +      -
     47V  GLU      3.0    14.5    +      -       -      +
     48V  SER      3.6     3.1    -      -       -      +
     50V  ASP*     1.3    71.1    -      -       -      +
     52V  MET*     1.3    61.1    +      -       -      +
     54V  HIS*     2.8    16.0    +      -       -      +
     55V  ALA*     2.8    31.0    +      -       -      +
     94V  GLU*     3.2     7.1    -      -       -      +
    127V  GLU*     2.9     2.6    -      -       -      +
    130V  HIS*     3.4     5.4    +      -       -      -
    201V   MN      2.0    33.7    +      -       -      -
    202V   MN      2.0    34.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 52 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22V  ILE*     3.6    23.3    -      -       +      +
     26V  PHE*     4.1     4.0    -      -       +      -
     48V  SER*     3.0    33.5    +      -       -      +
     49V  ILE*     3.2    24.0    -      -       +      +
     51V  GLU*     1.3    75.6    -      -       -      +
     53V  LYS*     1.3    58.0    +      -       -      +
     55V  ALA*     3.2     3.3    +      -       -      +
     56V  ASP*     2.9    27.4    +      -       -      +
    200V  HEM      2.2   100.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 53 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49V  ILE*     2.9    25.8    +      -       -      +
     50V  ASP*     3.6    18.1    +      -       -      +
     52V  MET*     1.3    73.8    -      -       -      +
     54V  HIS*     1.3    64.0    +      -       +      +
     56V  ASP*     3.4     9.6    +      -       -      +
     57V  ARG*     3.1    26.4    +      -       +      +
    200V  HEM      3.5    43.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 54 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18V  GLU*     3.6    15.0    -      -       +      +
     50V  ASP*     2.8    28.5    +      -       +      +
     51V  GLU*     2.8    12.9    +      -       -      +
     53V  LYS*     1.3    73.1    -      -       +      +
     55V  ALA*     1.3    62.8    +      -       -      +
     57V  ARG*     3.0    23.5    +      -       -      +
     58V  TYR*     3.1    18.3    +      -       +      -
    123V  ILE*     3.6    29.9    -      -       +      +
    126V  ASP*     2.8    38.3    +      -       +      -
    127V  GLU*     3.1    18.2    -      -       -      -
    130V  HIS*     4.9     0.4    -      +       -      -
    202V   MN      2.5    23.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 55 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15V  LEU*     3.8    22.8    -      -       +      +
     18V  GLU*     4.2     7.7    -      -       +      +
     19V  LEU*     4.6     2.9    -      -       +      -
     22V  ILE*     4.0    13.7    -      -       +      -
     51V  GLU      2.8    15.0    +      -       -      +
     52V  MET      3.4     8.5    -      -       -      +
     54V  HIS*     1.3    70.0    -      -       -      +
     56V  ASP*     1.3    58.5    +      -       -      +
     58V  TYR*     3.2     8.0    +      -       -      +
     59V  ILE*     2.9    34.9    +      -       -      +
    200V  HEM      4.0    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 56 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26U  PHE*     3.4    24.3    -      -       +      -
     30U  ARG*     2.9    44.8    +      -       -      +
     52V  MET      2.9    12.2    +      -       -      +
     53V  LYS*     3.5    13.0    -      -       -      +
     54V  HIS      3.2     0.2    -      -       -      -
     55V  ALA*     1.3    76.5    -      -       -      +
     57V  ARG*     1.3    61.4    +      -       -      +
     59V  ILE*     3.5     1.9    +      -       -      +
     60V  GLU*     3.0    35.7    +      -       -      +
    200V  HEM      4.3     9.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 57 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53V  LYS*     3.1    14.3    +      -       -      +
     54V  HIS*     3.0    16.0    +      -       -      +
     56V  ASP*     1.3    74.9    -      -       +      +
     58V  TYR*     1.3    62.6    +      -       -      +
     60V  GLU*     3.4     5.1    +      -       -      +
     61V  ARG*     3.0    24.3    +      -       -      +
    119V  MET*     3.6    39.9    -      -       +      +
    122V  GLU*     3.0    47.8    +      -       -      +
    123V  ILE*     4.1    18.2    -      -       +      +
    126V  ASP*     5.8     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 58 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11V  LEU*     4.2    21.3    -      -       +      +
     14V  LEU*     3.8    31.4    -      -       +      +
     15V  LEU*     4.0    26.9    -      -       +      -
     18V  GLU*     3.7    27.4    +      -       +      -
     54V  HIS      3.1    22.1    +      -       -      -
     55V  ALA*     3.7     4.5    -      -       -      +
     57V  ARG*     1.3    72.7    -      -       -      +
     59V  ILE*     1.4    58.7    +      -       -      +
     61V  ARG*     3.1     5.0    +      -       -      +
     62V  ILE*     2.9    38.4    +      -       +      +
    101V  LEU*     3.7    23.2    -      -       -      +
    119V  MET*     3.5    27.8    -      -       +      -
    120V  MET*     4.4     3.1    -      -       +      -
    123V  ILE*     3.5    27.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 59 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26U  PHE*     3.8    28.0    -      -       +      -
     27U  LEU*     4.0     9.0    -      -       +      +
     30U  ARG*     3.9    17.5    -      -       +      -
     15V  LEU*     4.0    19.0    -      -       +      +
     55V  ALA*     2.9    25.4    +      -       +      +
     56V  ASP*     3.8     4.7    -      -       -      +
     58V  TYR*     1.4    72.3    -      -       -      +
     60V  GLU*     1.3    62.8    +      -       -      +
     62V  ILE*     4.8     0.7    -      -       -      -
     63V  LEU*     3.1    41.0    +      -       +      +
     69V  PRO*     3.8    19.2    -      -       +      +
     71V  LEU*     3.9    26.0    -      -       +      -
    200V  HEM      4.4     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 60 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30U  ARG*     3.2    26.0    +      -       +      +
     33U  LYS*     3.4    30.6    +      -       -      -
     56V  ASP*     3.0    41.2    +      -       -      +
     57V  ARG*     3.9     5.4    -      -       -      +
     59V  ILE*     1.3    77.2    -      -       -      +
     61V  ARG*     1.3    60.9    +      -       -      +
     63V  LEU*     3.5     6.5    +      -       +      +
     64V  PHE*     3.1    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 61 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128S  GLU*     2.9    31.1    +      -       -      +
      1V  MET*     5.0     0.6    -      -       -      +
     11V  LEU*     3.9    20.9    -      -       +      -
     57V  ARG      3.0    18.4    +      -       -      +
     58V  TYR      3.8     2.7    -      -       -      +
     60V  GLU*     1.3    74.4    -      -       -      +
     62V  ILE*     1.3    63.7    +      -       -      +
     64V  PHE*     3.2    27.1    +      -       -      +
     65V  LEU*     2.9    42.3    +      -       +      +
    113V  ASP*     3.1    24.9    +      -       -      -
    115V  VAL*     3.7    16.6    -      -       -      +
    116V  SER*     3.0    22.0    +      -       -      +
    119V  MET*     4.0    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 62 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8V  ILE*     4.0    13.0    -      -       +      +
     11V  LEU*     3.7    27.4    -      -       +      +
     12V  ASN*     3.6    38.8    -      -       -      +
     15V  LEU*     4.2    11.2    -      -       +      -
     58V  TYR      2.9    29.5    +      -       -      +
     59V  ILE      4.0     3.1    -      -       -      +
     61V  ARG*     1.3    70.5    -      -       -      +
     63V  LEU*     1.3    61.4    +      -       -      +
     65V  LEU*     3.3     6.6    +      -       -      +
     66V  GLU      3.2     4.7    +      -       -      -
     67V  GLY*     2.9    50.8    +      -       -      -
     68V  LEU      3.7    15.0    -      -       -      +
     69V  PRO*     3.7     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 63 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27U  LEU*     4.5     1.1    -      -       +      -
     30U  ARG*     3.9    30.3    -      -       +      +
     31U  MET*     4.1    20.2    -      -       +      +
     34U  ASN*     3.9    29.3    +      -       +      +
     59V  ILE*     3.1    42.1    +      -       +      +
     60V  GLU*     3.7     5.8    -      -       -      +
     62V  ILE*     1.3    76.3    -      -       -      +
     64V  PHE*     1.3    61.7    +      -       -      +
     66V  GLU*     3.0    17.0    +      -       -      +
     67V  GLY      4.0     7.9    -      -       -      +
     68V  LEU*     5.1     2.2    -      -       +      -
     69V  PRO*     3.4    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 64 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128S  GLU*     3.6    24.0    -      -       +      -
    131S  ILE*     4.7     0.9    -      -       +      -
    132S  ASP*     3.5    47.8    -      -       +      +
    135S  GLU*     4.1     4.5    -      -       -      -
     34U  ASN*     4.2    10.1    +      -       -      +
      1V  MET*     2.9    77.3    +      -       +      +
     60V  GLU      3.1    14.1    +      -       -      +
     61V  ARG*     3.2    37.9    +      -       -      +
     63V  LEU*     1.3    74.0    -      -       -      +
     65V  LEU*     1.3    62.8    +      -       +      +
     66V  GLU*     3.0     4.0    +      -       -      +
----------------------------------------------------------
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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