Contacts of the helix formed by residues 226 - 240 (chain C) in PDB entry 6N1G


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 ASN 226 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  MET*     3.2    24.7    -      -       -      +
     74C  PHE*     5.4     1.2    -      -       -      -
     93C  MET      3.0    25.2    +      -       -      +
     94C  ASN*     2.5    38.2    +      -       -      +
    224C  ALA      3.1     5.4    -      -       -      +
    225C  ILE*     1.4    86.7    -      -       -      +
    227C  PRO*     1.3    68.1    -      -       -      +
    228C  SER*     3.9     3.8    -      -       -      +
    229C  ARG*     3.0    31.5    +      -       +      +
    230C  ASP*     3.5    13.3    +      -       -      +
    257C  PRO      4.4     0.2    -      -       -      -
    403C  GOL      4.1    12.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 227 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94C  ASN*     3.1    15.3    -      -       -      +
     95C  ALA*     3.9    18.6    -      -       +      -
     96C  ALA*     4.0    10.1    -      -       +      +
    120C  PHE*     5.6     0.5    -      -       -      -
    226C  ASN*     1.3    82.7    -      -       -      +
    228C  SER*     1.3    56.7    +      -       -      +
    230C  ASP*     4.6     0.6    -      -       +      +
    231C  LEU*     3.3    33.1    +      -       -      +
    257C  PRO      3.5    19.8    -      -       -      +
    258C  VAL*     3.7    33.2    -      -       +      +
    261C  PRO*     3.8    17.3    -      -       +      -
    262C  LEU*     4.7     5.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 228 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  THR*     4.2     4.8    -      -       -      +
     93C  MET      5.4     1.6    -      -       -      -
     95C  ALA*     4.7     6.9    -      -       -      +
    116C  VAL*     5.3     1.8    -      -       -      -
    119C  GLN*     2.3    56.0    +      -       -      -
    120C  PHE*     3.3    10.4    +      -       -      -
    123C  SER*     3.1    12.5    +      -       -      -
    226C  ASN*     3.0     4.4    -      -       -      +
    227C  PRO*     1.3    77.3    -      -       -      +
    229C  ARG*     1.3    60.2    +      -       -      +
    230C  ASP      3.3     1.8    -      -       -      -
    232C  PRO*     3.0    24.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 229 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  THR*     5.4     0.2    -      -       -      +
     47C  MET*     4.6     7.6    -      -       +      -
     48C  MET*     3.5    33.2    -      -       -      +
     51C  GLY      5.3     6.5    +      -       -      -
     55C  VAL*     5.5     3.2    -      -       -      +
     74C  PHE*     4.0    38.0    -      -       +      -
    123C  SER*     4.9     1.6    -      -       -      -
    157C  ILE      4.6     7.3    +      -       -      -
    158C  PHE      3.1    21.2    +      -       -      -
    159C  ALA*     3.4    17.4    -      -       -      +
    160C  THR*     3.9    16.6    -      -       -      +
    222C  GLY      4.9     3.6    +      -       -      -
    223C  TYR*     4.7    11.5    +      -       -      -
    224C  ALA*     4.4    20.4    -      -       -      +
    225C  ILE*     5.1     1.3    -      -       +      +
    226C  ASN*     3.0    34.4    +      -       +      +
    228C  SER*     1.3    77.8    -      -       -      +
    230C  ASP*     1.3    55.4    +      -       -      +
    233C  PRO*     3.6     4.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 230 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159C  ALA*     3.2    10.3    -      -       -      +
    160C  THR*     2.7    44.0    +      -       -      +
    224C  ALA*     4.2     7.4    -      -       +      -
    226C  ASN      3.5     9.1    +      -       -      +
    227C  PRO      4.6     1.1    -      -       -      +
    228C  SER      3.3     0.2    -      -       -      -
    229C  ARG*     1.3    81.0    -      -       -      +
    231C  LEU*     1.3    62.4    +      -       -      +
    232C  PRO      3.7     0.2    -      -       -      -
    233C  PRO*     3.9     2.5    -      -       -      -
    234C  ARG*     2.9    37.0    +      -       -      +
    254C  TRP      5.0     0.5    -      -       -      +
    257C  PRO*     3.2    37.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 231 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  PHE*     3.4    25.4    -      -       +      -
    227C  PRO      3.3    15.2    +      -       -      +
    230C  ASP*     1.3    78.7    +      -       -      +
    232C  PRO*     1.3    67.3    -      -       +      +
    234C  ARG*     3.0    20.7    +      -       -      +
    235C  ILE*     3.1    33.8    +      -       +      +
    247C  PHE*     4.5    13.5    -      -       +      -
    254C  TRP*     4.9    20.2    -      -       +      +
    257C  PRO*     6.3     0.7    -      -       +      -
    258C  VAL*     4.1    26.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 232 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  PHE*     3.1    48.7    -      -       +      +
    123C  SER*     3.6     1.1    -      -       -      -
    124C  PHE*     3.5    20.0    -      -       -      +
    228C  SER*     3.0    39.5    -      -       -      +
    231C  LEU*     1.3    95.4    -      -       +      +
    233C  PRO*     1.3    64.7    -      -       +      +
    235C  ILE*     3.0    27.9    -      -       +      +
    236C  PHE*     3.3     4.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 233 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48C  MET*     3.4    36.3    -      -       +      -
    123C  SER*     4.3     4.5    -      -       -      +
    127C  ALA*     4.2    16.2    -      -       +      -
    158C  PHE*     3.5    29.1    -      -       +      +
    159C  ALA      4.5     0.2    -      -       -      +
    228C  SER      4.0     2.7    -      -       -      +
    229C  ARG      3.6     7.9    -      -       -      +
    230C  ASP      3.9     7.6    -      -       -      +
    231C  LEU      3.6     2.5    -      -       -      -
    232C  PRO*     1.3   101.5    -      -       +      +
    234C  ARG*     1.3    55.4    +      -       -      +
    236C  PHE*     3.2     4.0    +      -       -      +
    237C  THR*     2.8    32.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 234 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158C  PHE*     5.5     0.2    -      -       -      -
    159C  ALA*     3.5    11.3    -      -       +      +
    160C  THR      3.1    14.1    +      -       -      -
    161C  TYR*     2.9    32.3    -      -       -      +
    230C  ASP*     2.9    41.0    +      -       -      +
    231C  LEU*     3.0    13.4    +      -       -      +
    233C  PRO*     1.3    77.1    -      -       -      +
    235C  ILE*     1.3    54.7    +      -       -      +
    237C  THR*     3.1     1.3    +      -       -      -
    238C  PHE*     2.6    37.4    +      -       -      +
    246C  VAL*     2.5    46.6    +      -       +      +
    247C  PHE*     2.9    33.1    +      -       +      +
    249C  ASN*     4.2     0.6    -      -       -      +
    253C  TRP*     3.8     8.5    +      -       -      +
    254C  TRP*     3.6    27.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 235 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  PHE*     3.5    28.7    -      -       +      -
    124C  PHE*     3.4    26.0    -      -       +      -
    231C  LEU*     3.1    30.8    +      -       +      +
    232C  PRO*     3.0    22.7    -      -       +      +
    234C  ARG*     1.3    75.5    -      -       -      +
    236C  PHE*     1.3    60.3    +      -       -      +
    238C  PHE*     3.4    11.6    -      -       +      +
    239C  ILE*     3.3    27.3    +      -       +      +
    247C  PHE*     4.0    14.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 236 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  PHE*     3.5    33.4    -      +       +      +
    127C  ALA*     3.7    25.8    -      -       +      -
    128C  ALA*     3.5    32.8    -      -       +      -
    131C  TYR*     3.5    43.3    -      +       +      -
    158C  PHE*     3.9    11.4    -      +       -      -
    232C  PRO      3.3     6.7    +      -       -      +
    233C  PRO      3.2     7.5    +      -       -      +
    234C  ARG      3.0     0.4    -      -       -      -
    235C  ILE*     1.3    76.7    -      -       -      +
    237C  THR*     1.3    56.0    +      -       -      +
    239C  ILE*     2.6    35.4    +      -       +      +
    240C  ALA*     2.7    29.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 237 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155C  ALA*     3.9    12.6    -      -       +      -
    158C  PHE*     3.0    30.3    -      -       +      +
    233C  PRO      2.8    17.9    +      -       -      -
    234C  ARG*     4.3     0.2    -      -       -      -
    236C  PHE*     1.3    72.8    -      -       -      +
    238C  PHE*     1.3    60.7    +      -       -      +
    240C  ALA*     3.3     9.3    +      -       -      -
    242C  TRP*     3.2    71.9    +      -       +      +
    246C  VAL*     3.4    22.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 238 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234C  ARG      2.6    21.1    +      -       -      +
    235C  ILE*     3.4    13.5    -      -       +      +
    237C  THR*     1.3    74.5    -      -       -      +
    239C  ILE*     1.3    65.1    -      -       +      +
    241C  GLY*     3.9     5.0    +      -       -      -
    242C  TRP      4.1     0.2    +      -       -      -
    243C  GLY*     3.0    52.7    +      -       -      +
    244C  LYS*     3.6     6.3    -      -       +      -
    246C  VAL*     3.7     7.9    -      -       +      +
    247C  PHE*     3.3    32.1    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 239 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  PHE*     3.9    24.7    -      -       +      -
    235C  ILE*     3.3    15.2    +      -       +      +
    236C  PHE*     2.6    27.5    +      -       +      +
    238C  PHE*     1.3    77.0    -      -       +      +
    240C  ALA*     1.3    56.5    +      -       -      +
    241C  GLY*     3.1    11.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 240 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  TYR*     4.3    21.2    +      -       +      -
    138C  ILE*     5.7     0.7    -      -       -      +
    236C  PHE*     2.7    39.6    +      -       +      +
    237C  THR*     3.3     1.9    +      -       -      -
    239C  ILE*     1.3    73.4    -      -       -      +
    241C  GLY*     1.3    57.1    +      -       -      +
    242C  TRP*     3.7    31.1    -      -       +      -
----------------------------------------------------------
 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