Contacts of the helix formed by residues 287 - 312 (chain A) in PDB entry 2WWB


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 SER 287 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283A  LEU      4.4     0.2    +      -       -      -
    284A  PHE      3.2    11.0    +      -       -      -
    286A  THR*     1.3    84.7    -      -       -      +
    288A  ASN*     1.4    61.8    +      -       -      +
    289A  ILE      3.3     2.2    -      -       -      -
    290A  PRO*     3.2    17.1    -      -       -      +
    291A  ILE*     3.2    18.0    -      -       -      +
    376A  SER*     3.7     9.8    +      -       -      -
    421A  ALA*     3.5    13.0    +      -       -      +
    424A  GLY*     3.5    11.6    -      -       -      -
    425A  GLY*     3.4    30.2    +      -       -      -
    428A  ILE*     4.8     2.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180A  SER*     6.4     0.6    -      -       -      -
    284A  PHE      3.4     5.4    +      -       -      -
    285A  TYR*     3.3    54.7    +      -       +      +
    286A  THR      3.3     0.6    -      -       -      -
    287A  SER*     1.4    78.3    -      -       -      +
    289A  ILE*     1.4    80.4    +      -       +      +
    291A  ILE*     3.4    14.4    +      -       -      +
    292A  ILE*     3.5    20.5    +      -       -      +
    428A  ILE*     5.4     2.5    -      -       -      -
    449A  LEU*     4.7     4.7    -      -       -      +
    452A  THR*     4.0    13.3    -      -       +      +
    453A  ILE*     3.6    26.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180A  SER*     5.1     9.9    -      -       -      +
    285A  TYR      5.3     1.8    -      -       -      +
    286A  THR      4.7     3.4    -      -       -      +
    288A  ASN*     1.4    95.1    -      -       +      +
    290A  PRO*     1.3    69.9    -      -       +      +
    291A  ILE      3.3     0.7    +      -       -      -
    292A  ILE*     3.5    22.3    +      -       +      +
    293A  LEU*     3.5    27.4    +      -       +      +
    379A  TRP*     3.8    45.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  GLN*     4.9     2.2    -      -       -      +
    286A  THR      3.9     4.0    -      -       -      +
    287A  SER*     3.2    24.0    -      -       -      +
    289A  ILE*     1.3    94.0    -      -       +      +
    291A  ILE*     1.4    58.5    +      -       +      +
    293A  LEU*     3.5     3.3    +      -       +      +
    294A  GLN*     3.1    25.8    +      -       -      +
    372A  CYS*     3.7    21.5    -      -       -      +
    375A  PHE*     3.6    36.1    -      -       +      +
    376A  SER*     3.7    19.3    -      -       -      +
    379A  TRP*     4.4    11.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  SER      3.2    19.3    -      -       -      +
    288A  ASN*     3.4     6.7    +      -       -      +
    289A  ILE      3.4     0.8    -      -       -      -
    290A  PRO*     1.4    73.9    -      -       +      +
    292A  ILE*     1.4    65.3    +      -       -      +
    294A  GLN*     3.3     7.1    +      -       +      +
    295A  SER*     3.1    32.8    +      -       -      +
    372A  CYS*     3.7    36.3    -      -       +      -
    425A  GLY*     4.0    11.7    -      -       -      +
    428A  ILE*     3.8    45.1    -      -       +      -
    432A  SER*     4.4     9.9    -      -       -      +
    445A  THR*     5.5     1.6    -      -       +      -
    449A  LEU*     3.9    18.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  ILE*     5.2     3.1    -      -       +      +
     85A  VAL*     4.4    20.4    -      -       +      +
    180A  SER*     5.7     8.3    -      -       -      +
    183A  ILE*     5.0    20.0    -      -       +      -
    288A  ASN*     3.5    28.0    -      -       -      +
    289A  ILE*     3.7    18.2    -      -       +      +
    290A  PRO      3.4     0.2    -      -       -      -
    291A  ILE*     1.4    75.9    -      -       -      +
    293A  LEU*     1.4    61.0    +      -       +      +
    295A  SER*     3.5     4.2    +      -       -      -
    296A  ALA*     3.1    24.8    +      -       -      +
    449A  LEU*     3.9    26.6    -      -       +      +
    453A  ILE*     3.9    24.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  VAL*     4.3    14.8    -      -       +      +
     88A  GLY*     3.8    14.6    -      -       -      +
     89A  LEU*     3.4    47.6    -      -       +      +
     92A  GLN*     3.7    42.8    -      -       +      +
    179A  ILE*     6.2     1.8    -      -       +      -
    289A  ILE*     3.5    23.3    +      -       +      +
    290A  PRO      3.5     8.0    +      -       -      +
    291A  ILE      3.3     0.2    -      -       -      -
    292A  ILE*     1.4    78.2    -      -       +      +
    294A  GLN*     1.4    59.6    +      -       -      +
    296A  ALA*     3.5     3.2    +      -       +      +
    297A  LEU*     3.1    21.5    +      -       -      +
    375A  PHE*     4.5     6.7    -      -       +      -
    379A  TRP*     5.9     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  PRO      3.1    14.1    +      -       -      +
    291A  ILE*     3.3     9.3    +      -       -      +
    293A  LEU*     1.4    74.4    -      -       -      +
    295A  SER*     1.4    64.3    +      -       -      +
    297A  LEU*     3.3    19.4    +      -       +      +
    298A  VAL*     3.5    14.9    +      -       -      +
    367A  PHE*     5.8     2.6    -      -       -      -
    368A  MET*     3.4    44.4    -      -       -      +
    371A  SER*     3.5    34.6    +      -       -      -
    372A  CYS*     3.4    29.8    -      -       -      +
    375A  PHE*     3.9    12.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  TRP*     3.7    19.1    -      -       -      -
     68A  ILE*     3.9    25.3    -      -       -      +
    291A  ILE*     3.1    18.6    +      -       -      +
    292A  ILE      3.7     5.2    -      -       -      -
    294A  GLN*     1.4    77.0    +      -       -      +
    296A  ALA*     1.4    62.4    +      -       -      +
    297A  LEU      3.5     0.2    +      -       -      -
    298A  VAL*     3.6     1.8    +      -       -      -
    299A  SER*     3.3    23.8    +      -       -      -
    368A  MET*     5.6     2.0    -      -       -      +
    445A  THR*     3.4    25.3    -      -       -      +
    449A  LEU*     3.9     6.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  ILE      4.9     6.7    +      -       -      +
     69A  LEU*     5.7     1.9    -      -       +      +
     85A  VAL*     4.2    34.3    -      -       +      +
     86A  THR*     5.7     0.2    -      -       -      -
     89A  LEU*     4.5     6.7    -      -       +      -
    292A  ILE      3.1    17.5    +      -       -      +
    293A  LEU*     3.5    11.2    -      -       -      +
    294A  GLN      3.3     0.2    -      -       -      -
    295A  SER*     1.4    74.8    -      -       -      +
    297A  LEU*     1.4    61.4    +      -       -      +
    299A  SER*     3.4     9.5    +      -       -      -
    300A  ASN*     2.9    29.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  LEU*     3.9    25.8    -      -       +      +
    293A  LEU      3.1    14.3    +      -       -      +
    294A  GLN*     3.3    16.1    +      -       +      +
    296A  ALA*     1.4    76.0    -      -       -      +
    298A  VAL*     1.4    66.5    +      -       +      +
    300A  ASN*     3.2    10.5    +      -       +      +
    301A  LEU*     3.1    36.0    +      -       +      +
    345A  LEU*     5.8     2.2    -      -       +      -
    367A  PHE*     6.3     2.9    -      -       +      -
    375A  PHE*     5.2    10.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  TRP*     3.5    29.8    -      -       +      -
    294A  GLN*     3.5    29.5    +      -       -      +
    295A  SER      3.9     1.1    -      -       -      +
    296A  ALA      3.4     0.2    -      -       -      -
    297A  LEU*     1.4    76.4    -      -       +      +
    299A  SER*     1.4    64.0    +      -       -      +
    301A  LEU*     3.2    19.8    +      -       +      +
    302A  TYR*     3.2    24.8    -      -       +      +
    345A  LEU*     3.5    43.5    -      -       +      +
    368A  MET*     4.2    12.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  TRP*     3.8     9.9    -      -       -      -
     65A  MET*     3.4    53.2    +      -       -      +
     68A  ILE*     4.2     8.7    -      -       -      +
     69A  LEU*     4.4    16.4    -      -       -      -
    295A  SER      3.3    13.2    +      -       -      -
    296A  ALA*     3.5    12.6    -      -       -      -
    297A  LEU      3.3     0.2    -      -       -      -
    298A  VAL*     1.4    78.4    -      -       -      +
    300A  ASN*     1.4    60.1    +      -       -      +
    302A  TYR*     3.5    15.1    +      -       -      +
    303A  VAL*     4.4     0.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  MET*     5.5     1.6    -      -       -      +
     69A  LEU*     4.9     8.9    -      -       -      +
     86A  THR*     3.5    36.2    +      -       -      +
     89A  LEU*     3.7    20.4    -      -       +      +
    127A  GLN*     4.8     8.1    +      -       -      +
    296A  ALA*     2.9    17.9    +      -       -      +
    297A  LEU*     3.2    11.2    +      -       +      +
    299A  SER*     1.4    76.3    -      -       -      +
    301A  LEU*     1.4    63.1    +      -       -      +
    302A  TYR      3.3     0.7    +      -       -      -
    303A  VAL*     3.4    14.6    +      -       -      +
    304A  ILE*     3.5    23.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  LEU*     3.1    22.3    +      -       +      +
    298A  VAL*     3.2    16.0    +      -       +      +
    300A  ASN*     1.4    76.8    -      -       -      +
    302A  TYR*     1.4    60.5    +      -       -      +
    304A  ILE*     3.4    21.3    -      -       +      +
    305A  SER*     2.9    29.5    +      -       -      +
    324A  TRP*     3.8    37.9    -      -       +      -
    341A  LEU*     4.8     2.2    -      -       +      -
    342A  CYS*     3.9    29.8    -      -       +      +
    345A  LEU*     3.9    28.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  PHE*     4.5     1.6    -      -       +      -
     64A  TRP*     3.6    22.0    -      +       -      -
     65A  MET*     4.0    15.9    -      -       +      -
    298A  VAL*     3.2    44.2    -      -       +      +
    299A  SER*     3.5    15.5    -      -       -      +
    300A  ASN      3.3     0.2    -      -       -      -
    301A  LEU*     1.4    77.5    -      -       -      +
    303A  VAL*     1.4    60.0    +      -       -      +
    305A  SER*     3.7     6.9    +      -       -      -
    306A  GLN*     3.4    23.0    +      -       -      +
    334A  ARG*     3.3    37.1    +      -       -      -
    335A  ALA      3.6    12.9    -      -       -      +
    336A  TYR*     3.5    15.3    -      -       -      -
    337A  PRO*     5.0     0.5    -      -       -      +
    342A  CYS*     3.5    28.7    -      -       -      -
    345A  LEU      3.7     2.1    +      -       -      -
    346A  SER*     3.5    27.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  PHE*     5.1     0.9    -      -       +      -
     65A  MET*     3.6    30.7    -      -       +      -
    127A  GLN*     6.2     1.6    -      -       -      +
    130A  VAL*     3.8    22.9    -      -       +      -
    134A  THR*     3.4    26.2    -      -       +      +
    136A  MET*     3.5    30.5    -      -       +      -
    299A  SER      4.4     2.9    -      -       -      +
    300A  ASN*     3.4     7.6    +      -       -      +
    301A  LEU      3.3     0.4    -      -       -      -
    302A  TYR*     1.4    73.8    -      -       +      +
    304A  ILE*     1.4    66.4    +      -       +      +
    305A  SER      3.3     0.2    +      -       -      -
    306A  GLN*     3.5     7.7    +      -       -      +
    307A  MET*     3.3    20.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  VAL*     6.2     2.0    -      -       +      -
    300A  ASN*     3.5    15.5    +      -       +      +
    301A  LEU*     3.4    35.9    -      -       +      +
    303A  VAL*     1.4    81.7    -      -       +      +
    305A  SER*     1.4    56.4    +      -       -      +
    307A  MET*     4.0     5.2    -      -       -      +
    308A  LEU*     3.0    33.5    +      -       +      +
    324A  TRP*     4.0    21.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301A  LEU*     2.9    21.3    +      -       -      +
    302A  TYR      3.8     6.7    -      -       -      -
    303A  VAL      3.2     0.6    -      -       -      -
    304A  ILE*     1.4    77.6    -      -       -      +
    306A  GLN*     1.4    60.9    +      -       -      +
    309A  SER*     3.2    17.5    +      -       -      -
    324A  TRP*     3.3    45.7    +      -       -      -
    325A  SER*     3.5     7.1    +      -       -      -
    328A  SER*     3.3    10.1    +      -       -      -
    337A  PRO*     3.8    13.5    -      -       -      -
    342A  CYS*     3.8    10.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  PHE*     3.8    18.8    -      -       -      -
    134A  THR*     4.2    17.4    -      -       +      +
    136A  MET*     4.9     2.0    -      -       -      +
    302A  TYR      3.4    20.1    +      -       -      +
    303A  VAL*     3.5     8.6    +      -       -      +
    304A  ILE      3.5     0.4    -      -       -      -
    305A  SER*     1.4    77.5    -      -       -      +
    307A  MET*     1.4    64.4    -      -       -      +
    309A  SER*     4.1     0.7    -      -       -      -
    310A  ALA*     3.5    17.0    +      -       -      +
    311A  ARG*     3.3    21.7    +      -       -      +
    328A  SER*     4.0    19.0    -      -       -      -
    329A  SER      4.3     9.5    -      -       -      +
    330A  GLY*     5.2     0.3    +      -       -      -
    335A  ALA*     3.4    33.5    +      -       +      +
    337A  PRO*     5.1     4.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133A  MET*     3.3    55.9    -      -       +      +
    134A  THR*     3.9    20.6    -      -       -      +
    303A  VAL*     3.3    15.4    +      -       +      +
    304A  ILE*     4.1     6.1    -      -       -      +
    306A  GLN*     1.4    77.5    -      -       -      +
    308A  LEU*     1.4    62.7    +      -       -      +
    311A  ARG*     3.3    43.7    +      -       +      +
    312A  PHE*     3.2    33.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304A  ILE*     3.0    19.8    +      -       +      +
    305A  SER      3.8     0.4    -      -       -      +
    307A  MET*     1.4    76.9    -      -       -      +
    309A  SER*     1.4    58.1    +      -       -      +
    312A  PHE*     3.7    16.6    +      -       +      -
    313A  SER*     3.0    38.3    +      -       -      +
    321A  LEU*     3.9    33.9    -      -       +      +
    322A  GLY*     5.8     0.9    -      -       -      -
    324A  TRP*     3.9    22.4    -      -       +      +
    325A  SER*     3.6    22.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  SER      3.2    14.6    +      -       -      -
    306A  GLN      3.6     1.3    +      -       -      -
    307A  MET      3.4     0.2    -      -       -      -
    308A  LEU*     1.4    78.3    -      -       -      +
    310A  ALA*     1.3    61.8    +      -       -      +
    313A  SER      2.9    19.8    -      -       -      +
    314A  GLY      3.8     1.9    -      -       -      -
    315A  ASN*     3.3    20.0    +      -       -      -
    318A  VAL*     4.0     9.2    -      -       -      +
    321A  LEU*     3.2    20.1    -      -       -      +
    325A  SER*     3.4    19.8    +      -       -      -
    328A  SER*     3.7    20.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  GLN      3.5     4.3    +      -       -      +
    309A  SER*     1.3    80.8    -      -       -      +
    311A  ARG*     1.4    94.9    +      -       +      +
    312A  PHE      3.8     1.3    -      -       -      -
    314A  GLY      3.6    15.5    -      -       -      +
    315A  ASN*     3.8    19.0    +      -       -      +
    328A  SER*     6.3     0.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133A  MET      4.7     4.3    -      -       -      -
    134A  THR      4.0    22.8    +      -       -      -
    141A  SER*     4.1    20.6    +      -       -      +
    306A  GLN*     3.3    34.1    +      -       -      +
    307A  MET*     3.3    42.6    +      -       +      +
    310A  ALA*     1.4    95.0    -      -       +      +
    312A  PHE*     1.4    58.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307A  MET*     3.2    26.4    +      -       +      +
    308A  LEU*     3.6    21.7    +      -       +      +
    310A  ALA      3.8     0.2    -      -       -      -
    311A  ARG*     1.4    77.2    -      -       -      +
    313A  SER*     1.3    88.5    +      -       -      +
    314A  GLY      5.1     0.9    +      -       -      -
----------------------------------------------------------
 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