Contacts of the strand formed by residues 326 - 335 (chain A) in PDB entry 3IH9


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 326 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    322A  ARG*     3.8     2.1    -      -       -      -
    323A  GLU*     3.3    26.7    +      -       +      -
    324A  GLY      3.4     7.5    +      -       -      +
    325A  ASP*     1.3    90.2    -      -       +      +
    327A  VAL*     1.3    64.2    +      -       -      +
    328A  PHE*     3.6    36.6    -      -       +      -
    406A  THR*     3.4    29.7    +      -       +      +
    408A  VAL*     4.3     8.3    -      -       +      +
    438A  ARG*     4.5     6.7    -      -       -      +
    440A  GLU*     3.0    33.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 327 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320A  VAL*     3.8    24.7    -      -       +      -
    321A  GLU      3.1    11.9    -      -       -      +
    322A  ARG*     3.2    31.4    -      -       -      +
    326A  ARG*     1.3    74.7    -      -       -      +
    328A  PHE*     1.3    67.2    +      -       -      +
    329A  LEU*     4.0     3.1    +      -       +      -
    350A  LEU*     4.5    14.6    -      -       +      -
    394A  ALA*     4.5     2.5    -      -       +      -
    404A  ILE*     3.8    29.4    -      -       +      -
    406A  THR      3.0     7.0    +      -       -      +
    407A  VAL*     3.4    12.8    -      -       +      +
    408A  VAL*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 328 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  PHE*     3.7     1.9    -      -       -      +
    320A  VAL*     3.3     6.8    -      -       -      +
    321A  GLU*     2.6    58.0    +      -       +      +
    323A  GLU*     3.2    34.5    -      -       +      -
    326A  ARG*     3.6    46.2    -      -       +      -
    327A  VAL*     1.3    75.8    -      -       -      +
    329A  LEU*     1.3    59.7    +      -       -      +
    330A  HIS*     4.0    23.5    +      +       +      +
    408A  VAL*     3.9    24.7    -      -       +      +
    442A  GLU*     5.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 329 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317A  VAL*     3.6    26.5    -      -       +      -
    319A  PHE      3.8     2.9    -      -       -      +
    320A  VAL*     4.3    15.3    -      -       +      -
    327A  VAL*     4.0     2.9    +      -       +      -
    328A  PHE*     1.3    72.4    -      -       -      +
    330A  HIS*     1.3    65.4    +      -       -      +
    331A  LEU*     3.6    22.0    -      -       +      -
    343A  VAL*     5.3     3.4    -      -       +      +
    346A  ALA*     4.4    16.4    -      -       +      -
    347A  LEU*     3.5    33.4    -      -       +      +
    350A  LEU*     5.5     4.9    -      -       +      -
    391A  ALA*     6.2     0.4    -      -       +      -
    407A  VAL*     4.9     9.4    -      -       +      -
    408A  VAL      2.9    14.5    +      -       -      +
    409A  LEU*     3.6    19.4    -      -       +      +
    410A  ASN      3.1    21.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317A  VAL*     3.6     1.4    -      -       -      -
    318A  ARG*     2.8    37.8    +      -       +      +
    319A  PHE*     3.1    61.4    +      +       +      +
    328A  PHE*     4.1    23.1    -      +       +      -
    329A  LEU*     1.3    79.2    +      -       -      +
    331A  LEU*     1.3    62.4    +      -       -      +
    408A  VAL*     5.5     1.6    -      -       +      -
    410A  ASN*     3.3    44.6    +      -       +      +
    413A  ARG*     5.9     4.7    -      -       +      -
    442A  GLU*     5.1     2.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 331 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316A  ALA      3.0    12.8    -      -       -      +
    317A  VAL*     4.4     2.9    -      -       +      -
    318A  ARG*     4.6     1.4    -      -       -      +
    329A  LEU*     3.6    23.1    -      -       +      -
    330A  HIS*     1.3    85.2    -      -       -      +
    332A  GLN*     1.3    66.5    +      -       -      +
    335A  ILE*     4.9     5.8    -      -       +      -
    343A  VAL*     4.2    30.1    -      -       +      -
    409A  LEU*     4.0    21.3    -      -       +      -
    410A  ASN      3.1    14.6    +      -       -      +
    411A  LEU*     3.8    18.8    -      -       +      -
    413A  ARG*     3.4    15.2    -      -       -      +
    414A  VAL*     3.2    22.6    +      -       +      +
    425A  ILE*     4.2    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 332 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  LEU*     3.6     2.9    -      -       +      +
    315A  THR*     3.0    37.7    +      -       +      +
    316A  ALA*     2.8    15.4    +      -       -      +
    317A  VAL      4.4     0.4    +      -       -      -
    318A  ARG*     2.5    60.0    +      -       +      +
    331A  LEU*     1.3    79.1    -      -       -      +
    333A  GLY*     1.3    65.1    +      -       -      +
    335A  ILE*     3.3    18.7    -      -       -      +
    413A  ARG*     3.5    21.1    -      -       +      +
    414A  VAL*     3.3     6.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 333 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  LEU*     4.3    10.8    -      -       -      -
    332A  GLN*     1.3    82.4    -      -       -      +
    334A  VAL*     1.3    60.8    +      -       -      -
    335A  ILE      3.5     0.3    +      -       -      -
    413A  ARG      3.6     8.3    +      -       -      -
    414A  VAL*     3.4    10.7    -      -       -      +
    415A  ASP*     3.1    35.7    +      -       -      -
    416A  ARG      3.7     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 334 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  LEU*     3.8    18.0    -      -       -      +
    333A  GLY*     1.3    70.5    -      -       -      -
    335A  ILE*     1.3    62.0    +      -       -      +
    336A  ARG*     3.4    26.5    +      -       +      +
    339A  GLY      5.7     0.2    +      -       -      -
    415A  ASP*     4.4    11.7    -      -       +      +
    416A  ARG*     3.5    48.5    -      -       +      +
    417A  ILE*     5.8     0.4    -      -       -      -
    418A  ASP      6.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  LEU*     3.8     4.0    -      -       +      -
    316A  ALA*     3.3    29.4    -      -       +      +
    331A  LEU*     4.9     6.1    -      -       +      -
    332A  GLN      3.3    25.6    -      -       -      +
    334A  VAL*     1.3    69.4    -      -       -      +
    336A  ARG*     1.3    64.0    +      -       -      +
    339A  GLY*     4.1     1.3    -      -       -      -
    340A  ALA*     3.6    21.8    -      -       +      +
    343A  VAL*     5.1     2.0    -      -       +      -
    414A  VAL*     3.8    25.1    -      -       +      -
    416A  ARG      3.1     6.5    +      -       -      -
    417A  ILE*     3.1    39.1    -      -       +      +
    418A  ASP*     3.0    18.0    +      -       -      +
    425A  ILE*     3.7    14.4    -      -       +      -
----------------------------------------------------------
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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