Contacts of the strand formed by residues 228 - 232 (chain A) in PDB entry 2O2C


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 SER 228 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198A  ARG      2.9     9.6    +      -       -      -
    199A  HIS*     3.4    29.1    +      -       -      -
    200A  VAL*     2.8    27.7    +      -       -      +
    225A  ARG      5.1     3.9    +      -       -      -
    226A  ASP      3.9     1.8    +      -       -      -
    227A  LEU*     1.3    69.2    -      -       -      +
    229A  LEU*     1.3    61.4    +      -       -      +
    230A  HIS*     3.4    13.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 229 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200A  VAL*     3.4    29.4    -      -       +      +
    202A  ASN*     5.7     0.4    -      -       +      -
    216A  THR*     4.4     9.9    -      -       +      +
    227A  LEU*     3.6    19.9    +      -       +      +
    228A  SER*     1.3    74.7    -      -       -      +
    230A  HIS*     1.3    65.2    +      -       -      +
    231A  PHE*     4.0    32.8    -      -       +      -
    336A  PRO*     4.0    29.2    -      -       +      +
    339A  ILE*     5.3     0.9    -      -       +      -
    340A  SER*     4.0    30.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 230 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199A  HIS*     3.1    28.3    +      +       +      -
    200A  VAL      2.8    11.1    +      -       -      +
    201A  VAL*     3.4    19.7    -      -       +      -
    202A  ASN*     2.9    25.4    +      -       -      +
    228A  SER*     3.4    25.2    -      -       -      -
    229A  LEU*     1.3    75.9    +      -       -      +
    231A  PHE*     1.3    69.0    +      -       -      +
    232A  VAL      4.2     0.4    -      -       -      -
    243A  VAL*     3.9    21.8    -      -       +      +
    246A  SER*     4.1    21.5    -      -       -      -
    247A  ILE*     3.6    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 231 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    202A  ASN*     3.6    27.4    -      -       +      -
    209A  ASP*     3.9    16.6    -      -       -      +
    212A  PRO*     3.7    30.7    -      -       +      -
    213A  VAL*     3.6    26.9    -      -       +      -
    216A  THR*     3.4    26.9    -      -       +      -
    217A  GLU*     5.5     5.4    -      -       -      -
    229A  LEU*     4.0    37.2    -      -       +      -
    230A  HIS*     1.3    77.6    -      -       -      +
    232A  VAL*     1.3    64.4    +      -       -      +
    233A  SER*     4.0     0.7    -      -       -      +
    239A  HIS*     3.3    24.3    +      -       -      -
    243A  VAL*     4.5     5.2    -      -       -      +
    336A  PRO*     4.8     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 232 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    201A  VAL*     3.7    20.2    -      -       +      -
    202A  ASN      2.8    12.4    +      -       -      +
    203A  ILE*     3.3    10.7    -      -       +      +
    204A  GLY      3.1    24.5    +      -       -      +
    209A  ASP*     5.0     0.7    -      -       -      +
    231A  PHE*     1.3    72.4    -      -       -      +
    233A  SER*     1.3    61.4    +      -       -      +
    239A  HIS*     3.9     7.4    -      -       +      +
    240A  ILE*     3.6    41.5    -      -       +      +
    243A  VAL*     3.7    21.1    -      -       +      -
    269A  ASN*     3.5    35.0    -      -       +      +
----------------------------------------------------------
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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