Contacts of the helix formed by residues 509 - 525 (chain A) in PDB entry 3L7A


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 GLU 509 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  SER*     3.3    31.9    +      -       -      +
     15A  VAL*     3.7    26.9    -      -       +      -
    233A  TYR*     4.7     5.6    +      -       -      +
    234A  ARG*     4.0    17.9    +      -       -      -
    504A  ALA*     4.2     5.2    -      -       +      -
    508A  GLY*     1.3    73.6    -      -       -      -
    510A  GLU*     1.3    64.9    +      -       -      +
    511A  TYR*     3.1    10.5    +      -       -      -
    512A  ILE*     3.2    26.6    +      -       +      +
    513A  SER      4.8     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 510 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507A  ILE      5.1     1.3    +      -       -      +
    508A  GLY      3.6     1.6    -      -       -      -
    509A  GLU*     1.3    77.3    -      -       -      +
    511A  TYR*     1.3    61.0    +      -       -      +
    512A  ILE      3.1     1.1    +      -       -      -
    513A  SER*     3.4    18.1    +      -       -      -
    514A  ASP*     3.3    23.5    +      -       -      +
    517A  GLN*     3.0    33.3    +      -       -      +
    831A  ARG*     5.7     1.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 511 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  VAL*     4.7     0.2    -      -       -      +
    488A  PRO*     6.4     0.2    -      -       +      -
    492A  LEU*     3.7    22.7    -      -       +      -
    500A  ALA*     2.9    39.7    +      -       -      +
    503A  ILE*     3.7    20.2    -      -       +      -
    504A  ALA*     4.2     7.1    -      -       +      +
    507A  ILE*     4.3    10.9    +      -       +      +
    508A  GLY      3.3    26.9    -      -       -      -
    509A  GLU*     3.1     4.9    +      -       -      -
    510A  GLU*     1.3    76.9    -      -       -      +
    512A  ILE*     1.3    87.0    +      -       +      +
    513A  SER      3.2     0.2    -      -       -      -
    514A  ASP      3.1    27.8    +      -       -      +
    515A  LEU*     3.2    18.8    +      -       +      +
    517A  GLN*     3.9    22.5    +      -       +      +
    518A  LEU*     3.7    24.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 512 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  VAL*     4.4    21.3    -      -       +      +
    233A  TYR*     3.5    41.5    -      -       +      +
    488A  PRO*     3.5    15.5    -      -       -      +
    489A  ARG*     3.0    34.4    +      -       -      -
    493A  VAL*     3.7    31.2    -      -       +      -
    509A  GLU*     3.6    22.0    -      -       +      +
    510A  GLU      3.1     1.6    -      -       -      -
    511A  TYR*     1.3   107.0    -      -       +      +
    513A  SER*     1.3    56.8    +      -       -      +
    515A  LEU*     5.2     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 513 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  THR*     4.4     4.7    -      -       -      +
    150A  LEU*     5.8     2.1    -      -       -      +
    233A  TYR*     4.3    12.0    -      -       -      -
    489A  ARG*     3.9    12.6    -      -       -      +
    509A  GLU      4.8     0.2    +      -       -      -
    510A  GLU*     3.4    17.2    +      -       -      +
    512A  ILE*     1.3    78.7    -      -       -      +
    514A  ASP*     1.3    60.5    +      -       -      +
    515A  LEU      4.0     0.9    -      -       -      -
    814A  ASP*     4.0    13.4    -      -       -      +
    831A  ARG*     3.1    46.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 514 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    510A  GLU*     3.3    25.4    +      -       -      +
    511A  TYR*     3.1    13.9    +      -       -      -
    513A  SER*     1.3    81.2    -      -       -      +
    515A  LEU*     1.3    65.4    +      -       -      +
    516A  ASP*     4.2    15.6    +      -       -      +
    517A  GLN*     3.1    39.3    +      -       -      +
    814A  ASP*     6.4     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 515 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    486A  ILE*     5.7     0.7    -      -       +      +
    488A  PRO*     3.9    26.5    -      -       +      -
    492A  LEU*     4.8     0.9    -      -       +      -
    511A  TYR*     3.2    26.7    +      -       +      +
    513A  SER      4.0     0.2    -      -       -      -
    514A  ASP*     1.3    69.3    -      -       -      +
    516A  ASP*     1.3    60.7    +      -       -      +
    517A  GLN      3.0     6.1    -      -       -      -
    518A  LEU*     3.0    44.3    +      -       +      +
    683A  LEU*     4.0    25.1    -      -       +      -
    808A  SER      4.1     6.3    -      -       -      +
    809A  GLY*     3.5    20.5    -      -       -      +
    811A  PHE      5.0     0.7    -      -       -      -
    812A  SER*     3.8    35.7    +      -       -      +
    814A  ASP*     5.7     1.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 516 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    514A  ASP*     3.1    12.5    +      -       -      +
    515A  LEU*     1.3    76.0    -      -       -      +
    517A  GLN*     1.3    62.2    +      -       -      +
    518A  LEU      3.1     0.7    +      -       -      -
    519A  ARG*     3.3    29.8    +      -       +      +
    809A  GLY*     3.7    24.1    +      -       -      -
    810A  LYS*     3.8     6.1    +      -       -      -
    815A  ARG*     5.5     7.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 517 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507A  ILE*     3.7    13.8    -      -       +      +
    510A  GLU*     3.0    48.7    +      -       -      +
    511A  TYR*     3.9    13.6    +      -       +      +
    514A  ASP*     3.1    31.5    +      -       -      +
    515A  LEU      3.0     1.0    -      -       -      -
    516A  ASP*     1.3    74.6    -      -       +      +
    518A  LEU*     1.3    60.1    +      -       -      +
    519A  ARG*     3.0     6.1    -      -       -      -
    520A  LYS*     2.9    58.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 518 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492A  LEU*     5.2     1.6    -      -       +      -
    503A  ILE*     3.9    27.4    -      -       +      -
    507A  ILE*     4.4     4.0    -      -       +      -
    511A  TYR*     3.7    26.2    -      -       +      +
    515A  LEU*     3.0    40.6    +      -       +      +
    517A  GLN*     1.3    76.2    -      -       -      +
    519A  ARG*     1.3    61.6    +      -       -      +
    520A  LYS      3.1     0.2    -      -       -      -
    521A  LEU*     3.0    31.6    +      -       +      +
    683A  LEU*     3.8     9.6    -      -       +      -
    805A  ILE*     3.4    23.3    -      -       +      +
    806A  ALA*     3.3    16.8    -      -       -      +
    808A  SER*     3.4    13.9    -      -       -      +
    809A  GLY      4.8     2.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 519 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    516A  ASP*     3.3    20.4    +      -       -      +
    517A  GLN      3.0     0.8    -      -       -      -
    518A  LEU*     1.3    75.9    -      -       -      +
    520A  LYS*     1.3    63.5    +      -       +      +
    521A  LEU      3.0     0.2    -      -       -      -
    522A  LEU*     2.9    41.2    +      -       +      +
    702A  GLU*     3.2    40.0    +      -       -      +
    806A  ALA*     3.2    15.1    +      -       -      +
    807A  THR*     3.9    24.2    -      -       -      +
    809A  GLY*     6.3     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 520 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507A  ILE*     3.8    31.5    +      -       +      -
    517A  GLN*     2.9    58.4    +      -       -      +
    519A  ARG*     1.3    77.4    -      -       +      +
    521A  LEU*     1.3    60.0    +      -       -      +
    522A  LEU      3.2     1.3    +      -       -      -
    523A  SER*     3.3    22.4    +      -       -      -
    524A  TYR*     3.8     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 521 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    503A  ILE*     4.1    24.0    -      -       +      -
    506A  ARG*     4.7     5.2    -      -       +      -
    507A  ILE*     4.3    23.6    -      -       +      -
    518A  LEU*     3.0    39.4    +      -       +      +
    520A  LYS*     1.3    73.7    -      -       -      +
    522A  LEU*     1.3    62.5    +      -       -      +
    523A  SER      3.0     2.7    -      -       -      -
    524A  TYR*     2.9    29.1    +      -       +      +
    525A  VAL      3.8     3.5    +      -       -      -
    530A  PHE*     3.8    32.1    -      -       +      -
    802A  ILE*     4.0     9.9    -      -       +      +
    805A  ILE*     4.2    17.0    -      -       +      -
    806A  ALA*     4.0    10.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 522 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    519A  ARG*     2.9    43.0    +      -       +      +
    521A  LEU*     1.3    77.4    -      -       -      +
    523A  SER*     1.3    59.9    +      -       -      +
    524A  TYR      3.1     1.7    +      -       -      -
    525A  VAL*     3.5    25.0    +      -       +      +
    802A  ILE      4.8     0.9    -      -       -      +
    803A  ARG*     4.3    31.0    -      -       +      +
    806A  ALA*     3.4    23.3    -      -       +      +
    807A  THR*     4.5    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 523 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    520A  LYS*     3.3    15.1    +      -       -      -
    521A  LEU      3.0     0.6    -      -       -      -
    522A  LEU*     1.3    77.6    -      -       -      +
    524A  TYR*     1.3    70.0    +      -       -      +
    525A  VAL*     3.6     1.1    +      -       -      -
    526A  ASP*     5.1     1.4    +      -       -      +
    527A  ASP*     5.1     2.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 524 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    506A  ARG*     3.9    46.1    +      -       +      +
    507A  ILE*     4.3     9.1    -      -       +      +
    520A  LYS      3.8    19.3    -      -       -      -
    521A  LEU*     2.9    21.7    +      -       +      +
    523A  SER*     1.3    87.8    -      -       -      +
    525A  VAL*     1.3    60.3    +      -       -      +
    526A  ASP      3.1     3.1    -      -       -      -
    527A  ASP*     2.9    53.6    +      -       +      +
    530A  PHE*     3.7    29.4    -      +       +      -
    802A  ILE*     4.5     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 525 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    521A  LEU      3.8     1.6    +      -       -      -
    522A  LEU*     3.5    19.7    +      -       +      +
    523A  SER      3.6     0.4    -      -       -      -
    524A  TYR*     1.3    76.7    -      -       -      +
    526A  ASP*     1.3    72.6    +      -       -      +
    531A  ILE*     3.4     7.0    -      -       -      +
    799A  ARG*     3.1    61.2    +      -       +      +
    802A  ILE*     4.2    18.2    -      -       +      -
    803A  ARG*     3.9    43.3    -      -       +      +
----------------------------------------------------------
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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