Contacts of the helix formed by residues 248 - 263 (chain A) in PDB entry 3HIC


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 GLY 248 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  HIS*     5.9     2.2    -      -       -      -
    247A  THR*     1.3    81.6    -      -       -      +
    249A  ALA*     1.3    61.9    +      -       -      +
    250A  GLY      3.2     2.2    -      -       -      -
    251A  ASP*     3.3    18.5    +      -       -      +
    252A  VAL*     3.3    24.9    +      -       -      +
    281A  LYS*     4.2    19.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 249 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246A  ASP*     4.2    14.8    -      -       -      +
    247A  THR      2.8    10.2    +      -       -      +
    248A  GLY*     1.3    73.9    -      -       -      +
    250A  GLY*     1.3    58.8    +      -       -      +
    252A  VAL*     3.4     2.6    +      -       -      +
    253A  PHE*     3.1    23.6    +      -       -      +
    278A  SER*     3.3    27.7    +      -       -      +
    281A  LYS*     4.1    12.6    -      -       +      +
    282A  VAL*     3.9    24.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 250 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LYS*     6.2     0.2    -      -       -      -
    167A  ASP*     4.9     2.0    -      -       -      -
    185A  LYS*     3.5    31.2    -      -       -      -
    247A  THR      4.1     3.8    +      -       -      -
    248A  GLY*     3.2     1.2    -      -       -      -
    249A  ALA*     1.3    80.0    -      -       -      +
    251A  ASP*     1.3    61.9    +      -       -      +
    253A  PHE*     3.5     2.9    +      -       -      -
    254A  VAL*     3.2    19.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 251 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LYS*     3.3    41.3    -      -       -      +
     42A  HIS*     3.0    48.2    -      -       +      -
     43A  VAL*     4.1     8.7    -      -       +      +
     46A  VAL*     4.4     4.0    -      -       -      +
    167A  ASP*     4.0     2.8    -      -       -      +
    248A  GLY*     3.3    16.2    +      -       -      +
    249A  ALA      3.3     0.2    -      -       -      -
    250A  GLY*     1.3    73.9    -      -       -      +
    252A  VAL*     1.3    62.2    +      -       +      +
    254A  VAL*     3.5     5.9    +      -       -      +
    255A  GLY*     2.9    25.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 252 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  VAL*     3.9    17.9    -      -       +      +
    248A  GLY      3.3    14.2    +      -       -      +
    249A  ALA      3.8     6.5    -      -       -      +
    251A  ASP*     1.3    74.9    -      -       +      +
    253A  PHE*     1.3    66.9    +      -       -      +
    255A  GLY*     3.4     0.5    +      -       -      -
    256A  ALA*     2.9    23.1    +      -       -      +
    277A  CYS*     3.6    40.6    -      -       +      +
    278A  SER*     4.5     0.4    -      -       -      -
    281A  LYS*     3.7    28.7    -      -       +      -
    290A  PHE*     3.9    21.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 253 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183A  PHE*     5.5     1.1    -      +       -      -
    185A  LYS*     3.5    21.8    -      -       +      -
    217A  VAL*     3.6    32.1    -      -       +      -
    225A  SER*     4.6     7.6    -      -       -      -
    249A  ALA      3.1    14.7    +      -       -      +
    250A  GLY*     3.6    11.0    -      -       -      +
    251A  ASP      3.2     0.4    -      -       -      -
    252A  VAL*     1.3    78.7    -      -       -      +
    254A  VAL*     1.3    53.9    +      -       +      +
    256A  ALA*     3.6     0.5    -      -       -      -
    257A  PHE*     2.7    55.2    +      +       +      +
    271A  LEU*     4.4     9.4    -      -       +      -
    274A  ALA*     3.4    44.5    -      -       +      +
    275A  THR*     3.5    24.9    -      -       +      -
    278A  SER*     4.2     9.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 254 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  VAL*     4.1    17.0    -      -       +      -
    136A  VAL*     4.3    11.7    -      -       +      -
    167A  ASP*     3.5    27.4    -      -       +      +
    183A  PHE*     4.1    25.6    -      -       +      -
    185A  LYS*     3.7    19.3    -      -       +      -
    250A  GLY      3.2    14.6    +      -       -      +
    251A  ASP*     3.9     6.7    -      -       -      +
    252A  VAL      3.3     0.2    -      -       -      -
    253A  PHE*     1.3    77.0    -      -       -      +
    255A  GLY*     1.3    65.1    +      -       -      +
    257A  PHE*     3.2     5.7    +      -       -      +
    258A  ILE*     2.9    38.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 255 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  VAL*     3.8    23.3    -      -       -      +
     46A  VAL*     3.8    19.5    -      -       -      -
     47A  LEU*     3.4     8.8    -      -       -      +
    251A  ASP      2.9    16.9    +      -       -      -
    252A  VAL      3.8     1.3    -      -       -      -
    254A  VAL*     1.3    77.4    -      -       -      +
    256A  ALA*     1.3    56.4    +      -       -      +
    258A  ILE*     3.7     0.4    -      -       -      +
    259A  ALA*     2.9    26.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 256 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  VAL*     3.7     2.3    -      -       +      +
     50A  PHE*     4.1     9.9    -      -       +      -
    252A  VAL      2.9    17.3    +      -       -      +
    255A  GLY*     1.3    72.9    -      -       -      +
    257A  PHE*     1.3    60.8    +      -       -      +
    259A  ALA*     3.1     8.7    +      -       -      +
    260A  GLY*     2.8    27.4    +      -       -      -
    270A  THR*     4.8     0.3    -      -       -      +
    273A  VAL*     4.2     6.7    -      -       +      +
    274A  ALA*     3.6    23.7    -      -       -      +
    277A  CYS*     3.9    26.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 257 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183A  PHE*     3.6    34.8    -      +       +      -
    215A  TYR*     3.9    22.2    -      +       +      -
    217A  VAL*     3.8    22.0    -      -       +      -
    227A  CYS*     4.9     0.9    -      -       -      -
    253A  PHE*     2.7    43.0    +      +       +      +
    254A  VAL*     3.6     6.7    -      -       -      +
    256A  ALA*     1.3    73.3    -      -       -      +
    258A  ILE*     1.3    67.8    +      -       +      +
    260A  GLY      3.2     1.9    +      -       -      -
    261A  LEU*     3.1    40.2    +      -       +      +
    267A  ILE*     4.1    10.8    -      -       +      -
    270A  THR*     3.4    29.7    -      -       +      +
    271A  LEU*     3.9    15.7    -      -       +      -
    274A  ALA*     3.8    10.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 258 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  ILE*     3.7    34.3    -      -       +      -
     43A  VAL*     5.1     1.3    -      -       +      -
     47A  LEU*     4.1     7.9    -      -       +      -
    134A  MSE      4.0     9.5    -      -       +      +
    136A  VAL*     3.9    27.4    -      -       +      -
    163A  PHE*     4.2    23.1    -      -       +      -
    183A  PHE*     4.6    12.6    -      -       +      -
    254A  VAL*     2.9    29.6    +      -       +      +
    255A  GLY*     3.7     4.7    -      -       -      +
    257A  PHE*     1.3    84.7    -      -       +      +
    259A  ALA*     1.3    61.6    +      -       -      +
    261A  LEU*     3.2     7.5    +      -       +      +
    262A  ALA*     2.8    27.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 259 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LEU*     3.7     6.3    -      -       +      -
     50A  PHE*     4.0    17.5    -      -       +      -
     52A  ILE*     3.3    28.3    -      -       +      -
    255A  GLY      2.9    16.1    +      -       -      +
    256A  ALA*     3.1    14.8    +      -       -      +
    258A  ILE*     1.3    75.6    -      -       -      +
    260A  GLY*     1.3    64.4    +      -       -      +
    262A  ALA*     3.0     4.6    +      -       -      +
    263A  MSE      3.0    32.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 260 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  ALA      2.8    14.7    +      -       -      -
    257A  PHE      3.2     4.2    +      -       -      -
    259A  ALA*     1.3    76.6    -      -       -      +
    261A  LEU*     1.3    61.5    +      -       -      +
    263A  MSE      3.1    17.9    +      -       -      +
    265A  MSE      3.1    33.3    +      -       -      +
    270A  THR*     3.7    20.0    -      -       -      -
    273A  VAL*     5.5     1.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 261 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  MSE      4.6     9.9    -      -       -      -
    163A  PHE*     3.8    33.7    -      -       +      -
    215A  TYR*     3.5    37.0    -      -       +      +
    257A  PHE*     3.1    37.3    +      -       +      +
    258A  ILE*     3.6     9.9    -      -       +      +
    260A  GLY*     1.3    74.9    -      -       -      +
    262A  ALA*     1.3    64.8    +      -       -      +
    264A  ASN*     2.9    19.7    +      -       -      +
    265A  MSE      4.7     7.9    -      -       -      +
    267A  ILE*     5.0     2.7    -      -       +      -
    270A  THR*     4.3    16.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 262 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  ILE*     3.8    11.7    -      -       +      -
     52A  ILE*     4.0    16.4    -      -       +      -
    134A  MSE      3.1    30.0    -      -       +      +
    258A  ILE      2.8    10.3    +      -       -      +
    259A  ALA      3.3    10.1    -      -       -      +
    261A  LEU*     1.3    77.3    -      -       -      +
    263A  MSE      1.3    57.9    +      -       +      +
    264A  ASN*     3.1    14.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MSE 263 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  PHE*     4.0    33.7    -      -       +      +
     52A  ILE*     4.3    16.4    -      -       +      -
    259A  ALA*     3.0    28.2    +      -       +      +
    260A  GLY      3.1     5.5    +      -       -      +
    262A  ALA*     1.3    76.6    -      -       -      +
    264A  ASN*     1.3    72.4    +      -       -      +
    265A  MSE      3.2    41.1    +      -       +      +
    273A  VAL*     5.2     2.5    -      -       +      -
----------------------------------------------------------
 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