Contacts of the strand formed by residues 304 - 308 (chain A) in PDB entry 3K0W


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 VAL 304 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  PRO*     3.4    48.2    -      -       +      +
    234A  THR      3.3    23.3    -      -       -      +
    235A  SER*     3.7     8.7    -      -       -      +
    246A  LEU*     4.1     7.0    -      -       +      -
    286A  GLY      3.8     0.3    -      -       -      +
    287A  THR*     3.2     6.6    -      -       -      +
    288A  TYR*     2.7    59.1    +      -       +      +
    302A  LYS*     4.1    10.8    -      -       +      +
    303A  LYS*     1.3    76.6    -      -       -      +
    305A  GLU*     1.4    62.6    +      -       -      +
    306A  ILE*     4.6     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235A  SER*     3.2    16.5    +      -       -      +
    236A  GLN      3.1    24.4    +      -       -      +
    286A  GLY      3.8     3.8    -      -       -      +
    287A  THR*     3.2    36.6    +      -       -      +
    303A  LYS*     4.5     3.8    -      -       -      +
    304A  VAL*     1.4    72.2    -      -       -      +
    306A  ILE*     1.3    63.3    +      -       -      +
    307A  ILE*     4.0    19.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234A  THR      3.6    24.0    -      -       -      +
    236A  GLN*     3.4    21.3    -      -       +      +
    238A  LEU*     4.3     7.9    -      -       +      -
    244A  LEU*     3.7    35.9    -      -       +      -
    246A  LEU*     4.0     6.7    -      -       +      -
    284A  HIS      4.4     4.7    -      -       -      +
    285A  GLN*     3.0    22.2    -      -       -      +
    286A  GLY      2.9    21.7    +      -       -      +
    288A  TYR*     3.6    28.7    -      -       +      -
    304A  VAL*     4.6     2.5    -      -       +      -
    305A  GLU*     1.3    77.1    -      -       -      +
    307A  ILE*     1.4    60.6    +      -       -      +
    308A  ILE*     4.2    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235A  SER*     6.3     0.2    -      -       -      -
    236A  GLN      2.8    15.4    +      -       -      +
    237A  LYS*     3.3    17.7    -      -       +      -
    238A  LEU*     2.8    27.9    +      -       -      +
    285A  GLN*     3.8    15.5    -      -       +      +
    305A  GLU*     4.3    23.3    -      -       +      +
    306A  ILE*     1.4    74.0    -      -       -      +
    308A  ILE*     1.3    69.3    +      -       -      +
    309A  ASP*     4.4    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238A  LEU*     3.3     9.6    -      -       +      +
    239A  MET      4.3     0.7    -      -       -      -
    240A  PRO*     3.8    27.8    -      -       +      -
    280A  VAL*     4.0    17.3    -      -       +      -
    281A  ASP      3.4    30.1    -      -       -      +
    282A  LEU*     3.4    29.1    -      -       +      +
    284A  HIS*     3.6    14.8    -      -       +      +
    285A  GLN*     3.1    46.1    +      -       -      +
    306A  ILE*     4.2    12.8    -      -       +      -
    307A  ILE*     1.3    76.2    -      -       -      +
    309A  ASP*     1.3    62.5    +      -       -      +
----------------------------------------------------------
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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