Contacts of the strand formed by residues 319 - 323 (chain A) in PDB entry 1GRB


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 GLN 319 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  VAL*     3.7    17.7    -      -       -      +
    316A  ASP      3.0    14.4    +      -       -      +
    317A  GLU      3.4     5.7    -      -       -      +
    318A  PHE*     1.3    81.5    -      -       -      +
    320A  ASN*     1.3    63.6    +      -       -      +
    327A  TYR*     3.2     7.2    -      -       -      -
    328A  ALA      2.9    50.1    +      -       -      +
    329A  VAL*     3.8    26.3    -      -       +      +
    330A  GLY      5.2     0.4    -      -       -      +
    333A  CYS*     4.4     4.0    -      -       -      +
    335A  LYS*     5.8     0.2    -      -       -      -
    345A  ALA*     3.8    15.5    -      -       +      +
    349A  LEU*     4.6    11.9    -      -       +      -
    361A  LYS*     6.4     0.9    -      -       +      -
    362A  LEU*     5.0     3.3    +      -       -      +
    364A  TYR*     2.6    38.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  VAL*     2.9    23.2    -      -       -      -
    316A  ASP*     2.9    38.5    +      -       -      +
    318A  PHE*     3.5    17.0    -      -       -      +
    319A  GLN*     1.3    79.3    -      -       -      +
    321A  THR*     1.3    68.9    +      -       -      +
    323A  VAL      5.8     0.4    -      -       -      +
    326A  ILE      4.8     0.4    -      -       -      +
    327A  TYR*     3.1    19.4    -      -       -      -
    352A  ARG*     2.9    27.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  ILE*     5.1     1.1    -      -       +      -
    305A  ILE*     4.3     9.0    -      -       +      +
    313A  ILE*     3.7    27.6    -      -       +      -
    314A  ILE      3.6    11.7    -      -       -      +
    315A  VAL*     4.4     0.2    -      -       +      -
    320A  ASN*     1.3    85.5    -      -       -      +
    322A  ASN*     1.3    68.1    +      -       -      +
    323A  VAL*     3.1    19.6    +      -       -      +
    326A  ILE*     3.0    41.0    +      -       +      +
    327A  TYR      4.1    13.7    -      -       -      +
    328A  ALA*     4.3     2.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304A  GLY      3.0    23.2    +      -       -      -
    305A  ILE*     3.4     7.1    -      -       -      -
    306A  GLN*     2.9    55.2    +      -       +      +
    314A  ILE      4.5     1.8    +      -       -      -
    321A  THR*     1.3    75.2    -      -       -      +
    323A  VAL*     1.3    65.6    +      -       -      +
    324A  LYS*     4.0     2.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138A  PRO*     4.8     6.5    -      -       +      -
    303A  LEU*     3.8    24.7    -      -       +      +
    305A  ILE*     3.7    22.2    -      -       +      -
    320A  ASN*     5.8     0.5    -      -       -      +
    321A  THR*     3.1    19.4    +      -       -      +
    322A  ASN*     1.3   101.2    -      -       -      +
    324A  LYS*     1.3    75.0    +      -       -      +
    325A  GLY      3.4     0.3    +      -       -      -
    326A  ILE*     3.3    29.9    +      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il