Contacts of the helix formed by residues 240 - 267 (chain C) in PDB entry 5IYB


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 240 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  ASP*     4.8    18.2    -      -       -      +
     76C  ASP*     3.5    24.4    +      -       -      +
    135C  ARG*     5.6     8.1    -      -       -      +
    235C  SER*     5.3     0.2    -      -       -      -
    239C  LEU*     1.3    78.6    -      -       +      +
    241C  PRO*     1.4    73.2    -      -       +      +
    242C  GLU*     2.2    53.7    +      -       -      +
    243C  THR*     3.0    29.5    +      -       -      +
    244C  ILE*     3.1     9.7    +      -       -      +
    115K  GLY      5.4     4.0    -      -       -      -
    116K  ILE      3.0    13.9    +      -       -      -
    117K  GLU*     3.1    33.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 241 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LEU*     4.7     3.1    -      -       +      -
     15C  THR      4.4     6.1    -      -       -      +
     16C  ASP      3.7    15.7    -      -       -      +
     17C  GLU      3.4    32.5    -      -       -      +
     18C  ASN      3.9     6.1    -      -       -      +
     19C  VAL*     3.6    32.0    -      -       +      +
    233C  VAL*     4.7     3.7    -      -       +      +
    235C  SER*     4.1     5.8    -      -       -      +
    239C  LEU      3.5     3.7    -      -       -      +
    240C  ARG*     1.4    86.1    -      -       +      +
    242C  GLU*     1.3    65.1    -      -       -      +
    244C  ILE*     3.1    24.5    +      -       +      +
    245C  VAL*     3.2    16.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 242 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  LEU*     5.0    13.1    -      -       +      +
     19C  VAL*     4.7     4.3    -      -       +      +
    240C  ARG*     2.2    52.8    +      -       -      +
    241C  PRO*     1.3    78.2    -      -       -      +
    243C  THR*     1.3    66.2    +      -       -      +
    245C  VAL*     3.4     3.7    +      -       -      +
    246C  LEU*     3.0    30.4    +      -       -      +
    105K  PHE*     4.0    13.5    -      -       +      -
    109K  ILE*     3.8    41.7    -      -       +      -
    115K  GLY      4.8     1.2    -      -       -      +
    116K  ILE*     3.0    18.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 243 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76C  ASP      6.0     1.3    -      -       -      +
    239C  LEU*     3.7    27.3    -      -       +      +
    240C  ARG*     3.0    39.3    +      -       -      +
    242C  GLU*     1.3    81.5    +      -       -      +
    244C  ILE*     1.3    64.2    +      -       -      +
    246C  LEU*     4.1     8.3    -      -       +      +
    247C  SER*     2.9    36.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 244 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  PHE*     4.7     9.4    -      -       +      +
     42C  VAL*     3.8    16.8    -      -       +      +
    178C  PRO*     3.3    47.3    -      -       +      +
    179C  THR*     5.0     4.7    -      -       +      -
    233C  VAL*     5.0     8.7    -      -       +      -
    235C  SER*     4.1    10.5    -      -       -      -
    239C  LEU*     3.4    42.0    -      -       +      +
    240C  ARG      3.1     8.6    +      -       -      +
    241C  PRO*     3.1    13.7    +      -       +      +
    243C  THR*     1.3    75.8    -      -       -      +
    245C  VAL*     1.3    60.1    +      -       +      +
    247C  SER*     3.3     3.5    +      -       -      -
    248C  ALA*     2.9    27.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 245 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19C  VAL*     4.5     5.6    -      -       +      -
     21C  PHE*     4.5    15.0    -      -       +      -
     34C  ILE*     5.6     0.2    -      -       +      -
     38C  PHE*     3.5    38.1    -      -       +      -
    233C  VAL*     4.4    16.4    -      -       +      -
    241C  PRO      3.2    13.0    +      -       -      +
    242C  GLU      3.8     5.6    -      -       -      +
    244C  ILE*     1.3    76.1    -      -       +      +
    246C  LEU*     1.3    64.6    +      -       -      +
    248C  ALA*     3.3     1.9    +      -       -      +
    249C  LEU*     3.0    39.1    +      -       +      +
    105K  PHE*     3.9    24.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 246 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242C  GLU      3.0    17.4    +      -       -      +
    243C  THR*     4.1     8.3    -      -       +      +
    245C  VAL*     1.3    76.2    -      -       -      +
    247C  SER*     1.3    63.7    +      -       -      +
    249C  LEU*     3.5     6.3    +      -       +      +
    250C  SER*     3.2    30.4    +      -       -      +
    102K  GLU*     3.5    38.4    -      -       +      +
    105K  PHE*     4.5     9.8    -      -       +      -
    106K  ARG*     3.6    35.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 247 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42C  VAL*     4.7    12.3    -      -       -      -
     43C  PRO*     5.0    13.6    -      -       -      +
    239C  LEU*     4.9     4.6    -      -       -      +
    243C  THR*     2.9    31.5    +      -       -      +
    244C  ILE*     3.7     4.9    -      -       -      -
    246C  LEU*     1.3    76.9    -      -       -      +
    248C  ALA*     1.3    57.2    +      -       -      +
    250C  SER*     4.0     3.8    -      -       -      -
    251C  GLY*     2.9    27.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 248 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  ILE*     5.9     0.2    -      -       +      -
     37C  VAL*     3.4    29.6    -      -       +      +
     38C  PHE*     3.7    18.2    -      -       +      -
     42C  VAL*     3.5    18.9    -      -       +      +
    244C  ILE      2.9    16.1    +      -       -      +
    245C  VAL      3.5     5.4    -      -       -      +
    247C  SER*     1.3    73.9    -      -       -      +
    249C  LEU*     1.3    66.6    +      -       +      +
    251C  GLY*     3.5     1.1    +      -       -      -
    252C  LEU*     3.0    26.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 249 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  ILE*     3.8    45.1    -      -       +      -
     38C  PHE*     5.3     0.4    -      -       +      -
    245C  VAL*     3.0    33.8    +      -       +      +
    246C  LEU*     3.9     6.5    -      -       -      +
    248C  ALA*     1.3    76.7    -      -       -      +
    250C  SER*     1.3    58.8    +      -       -      +
    252C  LEU*     3.5     6.8    +      -       +      +
    253C  LYS*     2.9    27.9    +      -       -      +
     98K  LEU*     4.8    16.6    -      -       +      +
    101K  LEU*     4.6    13.9    -      -       +      +
    102K  GLU*     4.3    35.4    -      -       +      +
    105K  PHE*     4.9    10.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 250 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246C  LEU*     3.2    18.8    +      -       -      +
    247C  SER*     4.0     4.3    -      -       -      -
    249C  LEU*     1.3    75.2    -      -       -      +
    251C  GLY*     1.3    53.7    +      -       -      +
    253C  LYS*     3.0    21.2    +      -       -      +
    254C  LYS*     2.8    39.3    +      -       -      +
    102K  GLU*     3.5    23.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 251 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  GLU*     6.0     3.6    -      -       -      -
    247C  SER      2.9    19.1    +      -       -      -
    248C  ALA*     4.0     0.9    -      -       -      -
    250C  SER*     1.3    75.8    -      -       -      +
    252C  LEU*     1.3    55.9    +      -       -      +
    254C  LYS*     3.1    12.6    +      -       -      +
    255C  LYS*     2.8    27.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 252 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  SER*     5.0    11.7    -      -       -      +
     34C  ILE*     4.7    17.7    -      -       +      -
     37C  VAL*     4.0    30.4    -      -       +      +
     41C  GLU*     6.0     1.9    -      -       +      +
    248C  ALA      3.0    18.6    +      -       -      +
    249C  LEU*     3.6     7.0    -      -       -      +
    251C  GLY*     1.3    71.7    -      -       -      +
    253C  LYS*     1.3    60.8    +      -       -      +
    255C  LYS*     3.2    22.4    +      -       +      +
    256C  LEU*     3.0    47.3    +      -       +      +
     41K  THR*     5.1     9.2    -      -       +      +
     42K  LEU*     6.2     0.9    -      -       -      -
     45K  ILE*     6.2     4.0    -      -       +      -
     98K  LEU*     4.1    21.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 253 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249C  LEU      2.9    13.2    +      -       -      +
    250C  SER*     3.0    22.8    +      -       -      +
    252C  LEU*     1.3    75.1    -      -       -      +
    254C  LYS*     1.3    61.3    +      -       +      +
    256C  LEU*     4.1     5.4    -      -       -      +
    257C  SER*     2.6    37.9    +      -       -      +
     95K  ILE*     4.0    22.8    -      -       +      +
     98K  LEU*     5.3    10.5    -      -       +      +
     99K  SER*     3.2    28.0    -      -       -      +
    102K  GLU*     3.2    28.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 254 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80C  ASP*     5.0    11.5    +      -       -      -
    250C  SER*     2.8    23.6    +      -       -      +
    251C  GLY*     3.4    11.4    -      -       -      +
    253C  LYS*     1.3    74.7    -      -       +      +
    255C  LYS*     1.3    58.6    +      -       -      +
    257C  SER*     3.7     6.8    -      -       -      -
    258C  ASP*     3.0    29.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 255 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  GLU*     4.0    28.0    +      -       +      +
    171C  LYS*     4.0     9.5    -      -       -      +
    251C  GLY      2.8    12.7    +      -       -      +
    252C  LEU*     3.2    28.7    +      -       +      +
    254C  LYS*     1.3    78.4    -      -       -      +
    256C  LEU*     1.3    60.9    +      -       +      +
    258C  ASP*     3.4     8.3    +      -       -      +
    259C  LEU*     3.2    18.9    +      -       -      +
     38K  GLU*     2.9    35.6    +      -       -      +
     39K  ASP*     5.1     1.6    -      -       -      -
     41K  THR*     5.4     4.7    -      -       +      -
     42K  LEU*     3.9    27.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 256 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252C  LEU*     3.0    40.8    +      -       +      +
    253C  LYS*     4.1     2.2    -      -       -      +
    255C  LYS*     1.3    73.5    -      -       +      +
    257C  SER*     1.3    56.6    +      -       -      +
    259C  LEU*     3.0    12.2    +      -       +      +
    260C  GLN*     2.8    31.9    +      -       -      +
     42K  LEU*     4.8    18.6    -      -       +      -
     45K  ILE*     5.5     6.3    -      -       +      -
     91K  ILE*     4.3    14.6    -      -       +      +
     94K  LEU*     3.6    38.1    -      -       +      -
     95K  ILE*     3.9    26.5    -      -       +      -
     98K  LEU*     4.1    13.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 257 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253C  LYS*     2.6    30.1    +      -       -      +
    254C  LYS*     3.7     7.6    -      -       -      -
    256C  LEU*     1.3    76.4    -      -       -      +
    258C  ASP*     1.3    57.1    +      -       -      +
    260C  GLN*     3.2     5.9    +      -       -      +
    261C  THR*     2.9    33.4    +      -       -      +
     95K  ILE*     3.8    21.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 258 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254C  LYS      3.0    17.7    +      -       -      +
    255C  LYS*     3.5     9.0    -      -       -      +
    256C  LEU      3.1     0.2    -      -       -      -
    257C  SER*     1.3    74.3    -      -       -      +
    259C  LEU*     1.3    61.1    +      -       -      +
    261C  THR*     3.0    12.8    +      -       -      -
    262C  GLN*     2.9    49.7    +      -       -      +
     18K  LYS*     5.1    10.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 259 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255C  LYS      3.2     9.5    +      -       -      +
    256C  LEU*     3.0    15.1    +      -       +      +
    258C  ASP*     1.3    80.5    -      -       -      +
    260C  GLN*     1.3    57.6    +      -       -      +
    262C  GLN*     3.8     3.8    -      -       +      +
    263C  LEU*     2.9    29.5    +      -       -      +
     18K  LYS*     4.5    19.3    -      -       +      +
     19K  ILE*     4.7    13.5    -      -       +      -
     35K  ILE*     4.2    32.8    -      -       +      -
     42K  LEU*     3.6    39.5    -      -       +      -
     46K  ILE*     4.6     3.8    -      -       +      -
     87K  PHE*     4.7     4.7    -      -       +      -
     91K  ILE*     4.1    23.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 260 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256C  LEU      2.8    16.5    +      -       -      +
    257C  SER*     3.2    11.8    +      -       -      +
    259C  LEU*     1.3    74.9    -      -       -      +
    261C  THR*     1.3    59.8    +      -       +      +
    263C  LEU*     3.3    32.1    +      -       -      +
    264C  SER*     2.8    44.7    +      -       -      +
     88K  THR*     3.6    24.5    -      -       -      +
     91K  ILE*     3.6    22.7    -      -       +      +
     92K  THR*     3.0    24.6    +      -       -      -
     95K  ILE*     5.1     4.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 261 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257C  SER*     2.9    17.4    +      -       -      +
    258C  ASP*     3.0    25.5    +      -       -      -
    260C  GLN*     1.3    75.1    -      -       +      +
    262C  GLN*     1.3    66.3    +      -       -      +
    264C  SER*     3.6     7.3    +      -       -      -
    265C  HIS*     3.1    22.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 262 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  ASP*     2.9    36.3    +      -       -      +
    259C  LEU*     3.8     7.0    -      -       +      +
    261C  THR*     1.3    78.6    +      -       -      +
    263C  LEU*     1.3    62.4    +      -       -      +
    265C  HIS*     3.2    14.7    +      -       -      +
    266C  GLU*     3.1    33.2    +      -       -      +
     12K  LEU*     5.7     1.1    -      -       -      +
     18K  LYS*     3.3    42.6    +      -       +      +
     19K  ILE*     4.6     6.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 263 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259C  LEU*     2.9    19.2    +      -       +      +
    260C  GLN*     3.4    26.0    -      -       -      +
    262C  GLN*     1.3    74.9    -      -       -      +
    264C  SER*     1.3    64.7    +      -       -      +
    266C  GLU*     3.3    21.5    +      -       +      +
    267C  ILE*     3.5    17.0    +      -       +      +
     19K  ILE*     4.1    20.4    -      -       +      +
     21K  ILE*     4.0    27.1    -      -       +      -
     33K  PHE*     4.4     6.5    -      -       +      -
     84K  GLN*     5.1     1.8    -      -       +      +
     87K  PHE*     3.5    30.3    -      -       +      -
     88K  THR*     3.9    15.5    -      -       -      +
     91K  ILE*     4.7     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 264 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260C  GLN*     2.8    34.1    +      -       -      +
    261C  THR*     3.9     7.9    -      -       -      -
    263C  LEU*     1.3    74.0    -      -       -      +
    265C  HIS*     1.3    60.0    +      -       -      +
    267C  ILE*     3.1    17.9    +      -       -      +
    268C  GLN*     2.8    34.9    +      -       -      +
     88K  THR*     6.1     0.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 265 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261C  THR      3.1    18.4    +      -       -      +
    262C  GLN*     3.2    16.6    +      -       -      +
    264C  SER*     1.3    76.7    -      -       -      +
    266C  GLU*     1.3    78.8    +      -       -      +
    268C  GLN*     3.2    30.1    +      -       +      +
    269C  SER*     4.0    10.8    +      -       -      -
     17K  LYS*     6.1     0.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 266 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262C  GLN*     3.1    21.3    +      -       -      +
    263C  LEU*     3.3    14.4    -      -       +      +
    264C  SER      3.2     0.4    -      -       -      -
    265C  HIS*     1.3    91.2    -      -       -      +
    267C  ILE*     1.3    60.1    +      -       +      +
    268C  GLN      3.4     0.7    -      -       -      -
    269C  SER*     4.4     5.1    +      -       -      -
    270C  ASP      3.4     6.6    +      -       -      +
    272C  LEU*     3.1    35.8    -      -       +      +
     17K  LYS*     2.5    43.0    +      -       -      +
     18K  LYS      5.8     0.2    +      -       -      -
     19K  ILE*     3.4    25.7    +      -       +      +
     20K  THR*     5.6     0.6    -      -       -      -
     21K  ILE*     5.0     5.3    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 267 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263C  LEU*     3.6    20.2    -      -       +      +
    264C  SER*     3.2    23.8    -      -       -      +
    266C  GLU*     1.3    82.2    -      -       +      +
    268C  GLN*     1.3    63.0    +      -       -      +
    269C  SER      3.3     3.9    -      -       -      +
    270C  ASP      3.6    11.5    -      -       -      +
    271C  VAL*     3.9    20.3    -      -       -      +
    272C  LEU*     4.7     7.0    -      -       +      +
    274C  ILE*     3.6    40.6    -      -       +      -
     21K  ILE*     5.4     4.5    -      -       +      -
     84K  GLN*     5.7     0.9    -      -       +      -
     88K  THR*     5.6     4.0    -      -       +      +
----------------------------------------------------------
 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