Contacts of the strand formed by residues 27 - 30 (chain C) in PDB entry 4GKH


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 27 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25C  GLY      3.9     1.3    +      -       -      +
     26C  TYR*     1.3    75.0    -      -       -      +
     28C  TRP*     1.3    62.6    +      -       -      +
     43C  LEU*     3.4     6.6    -      -       -      -
     44C  TYR*     2.8    61.6    +      -       +      +
     45C  GLY*     4.9    12.8    +      -       -      +
    171E  ASN*     5.1     5.7    -      -       -      +
    172E  GLY*     3.4    44.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 28 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  LEU*     3.8    36.8    +      -       +      -
     26C  TYR      3.7    18.1    +      -       -      -
     27C  ARG*     1.3    76.1    -      -       -      +
     29C  ALA*     1.3    62.6    +      -       -      +
     41C  TYR*     3.8    23.1    -      +       +      -
     42C  ARG      3.6     2.7    -      -       -      -
     43C  LEU*     3.4    26.9    -      -       +      +
     44C  TYR*     3.9     7.4    +      -       -      -
     54C  LEU*     3.8    28.3    -      -       +      -
      9D  SER*     4.1     5.0    -      -       -      -
     10D  CYS*     3.7    34.6    +      -       -      +
     11D  SER      4.7     1.1    -      -       -      +
     12D  ARG*     3.7    38.1    -      -       +      +
     13D  PRO*     3.3    33.7    -      -       +      -
     15D  LEU*     6.5     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 29 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28C  TRP*     1.3    75.6    -      -       -      +
     30C  ARG*     1.3    60.9    +      -       -      +
     31C  ASP*     3.7     1.5    -      -       -      +
     41C  TYR*     3.3     5.7    -      -       -      +
     42C  ARG*     2.8    36.0    +      -       +      +
     44C  TYR*     3.7    17.5    -      -       +      +
      7D  GLU*     3.6    34.8    -      -       +      +
      8D  THR      3.4    10.8    -      -       -      +
      9D  SER*     4.7     1.8    -      -       -      +
     10D  CYS*     3.7     6.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 30 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  ALA*     1.3    71.0    -      -       -      +
     31C  ASP*     1.3    79.0    +      -       -      +
     33C  VAL*     5.0    11.3    -      -       +      +
     39C  THR*     4.2    18.8    -      -       -      +
     40C  ILE      3.5     9.6    -      -       -      +
     41C  TYR*     4.2    15.9    -      -       +      -
      6D  ARG      3.9     0.7    -      -       -      +
      7D  GLU*     3.4     2.3    -      -       -      -
      8D  THR*     2.8    55.2    +      -       -      +
     10D  CYS*     3.6    19.0    -      -       +      +
----------------------------------------------------------
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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