Contacts of the strand formed by residues 56 - 60 (chain A) in PDB entry 2AIN


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 56 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ILE*     5.1     0.3    -      -       -      +
     33A  GLY*     4.9     8.3    -      -       -      -
     34A  ILE      4.2     0.4    -      -       -      -
     35A  TYR*     3.3    35.1    +      -       +      +
     36A  VAL*     5.5     0.7    -      -       -      -
     55A  ASP*     1.3    77.3    -      -       -      +
     57A  LEU*     1.3    86.9    +      -       -      +
     58A  LEU*     3.9    21.0    -      -       -      +
     87A  GLU      3.9     0.2    -      -       -      +
     88A  VAL*     3.3     8.5    -      -       -      +
     89A  ALA*     2.8    47.3    +      -       -      +
     91A  GLN*     3.7    20.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  ILE*     5.9     0.9    -      -       +      -
     33A  GLY*     4.5     2.3    -      -       -      -
     34A  ILE*     2.9    43.3    +      -       +      +
     36A  VAL*     5.8     6.1    -      -       +      -
     51A  LEU*     6.5     1.3    -      -       +      -
     56A  GLN*     1.3    93.4    +      -       -      +
     58A  LEU*     1.3    63.3    +      -       -      +
     59A  SER      4.5     0.4    -      -       -      +
     60A  VAL*     3.1    32.3    -      -       +      -
     65A  LEU*     4.1     7.4    -      -       +      +
     77A  MET*     3.8    26.5    -      -       +      -
     86A  LEU*     4.4    21.1    -      -       +      -
     87A  GLU      3.6    19.1    -      -       -      +
     88A  VAL*     4.7     8.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ILE*     4.2    29.4    -      -       +      -
     56A  GLN*     3.9    22.9    -      -       -      +
     57A  LEU*     1.3    73.1    -      -       -      +
     59A  SER*     1.3    63.4    +      -       -      +
     64A  SER*     4.7     0.5    -      -       -      -
     65A  LEU*     3.5    27.5    +      -       -      +
     66A  VAL*     3.9    30.5    -      -       +      +
     87A  GLU*     3.1    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  THR*     5.9     1.3    -      -       -      -
     57A  LEU*     4.5     0.3    -      -       -      +
     58A  LEU*     1.3    78.8    -      -       -      +
     60A  VAL*     1.3    66.8    +      -       -      +
     62A  GLY*     4.2     6.7    -      -       -      -
     63A  ARG      2.7    28.9    +      -       -      -
     64A  SER*     3.9     8.0    +      -       -      -
     65A  LEU*     3.7     0.4    -      -       -      -
     85A  THR      3.3     4.3    -      -       -      +
     87A  GLU*     2.9    48.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  LEU*     3.1    35.9    -      -       +      -
     59A  SER*     1.3    76.1    -      -       -      +
     61A  ASP*     1.3    71.8    +      -       -      +
     62A  GLY      3.1     0.9    -      -       -      -
     63A  ARG*     3.0    42.1    +      -       -      +
     65A  LEU*     3.1    21.7    -      -       +      +
     77A  MET*     3.5    23.6    -      -       +      +
     80A  THR*     4.3     7.4    -      -       +      -
     84A  VAL*     4.7     1.3    -      -       +      -
     85A  THR      3.4     1.8    -      -       -      -
     86A  LEU*     3.3    24.2    -      -       +      -
----------------------------------------------------------
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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