Contacts of the strand formed by residues 401 - 407 (chain A) in PDB entry 2HD5


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 ILE 401 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235A  THR*     3.8    24.0    -      -       +      -
    236A  ARG      5.6     2.0    -      -       -      +
    237A  GLU*     5.4     8.3    -      -       +      +
    323A  LEU*     2.8    33.9    +      -       +      +
    324A  PHE*     3.5    35.0    -      -       +      +
    348A  TRP      5.0     0.2    -      -       -      +
    399A  PRO*     3.5    15.8    -      -       -      +
    400A  LYS*     1.3    88.1    -      -       +      +
    402A  LEU*     1.3    62.5    +      -       -      +
    403A  VAL*     3.9    10.2    +      -       +      -
    451A  TYR*     3.3    24.2    -      -       +      +
    517A  PHE*     4.7     0.9    -      -       +      -
    518A  TYR      3.4     6.7    -      -       -      +
    519A  GLU*     4.0    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 402 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  PHE*     4.1    16.8    -      -       +      -
    349A  ASP*     5.6     0.2    -      -       -      -
    350A  LEU*     4.2     7.9    -      -       +      -
    395A  ILE*     5.9     1.1    -      -       +      -
    398A  PHE*     5.6     0.7    -      -       +      -
    399A  PRO*     3.9    20.9    -      -       +      -
    400A  LYS      4.1     0.6    -      -       -      -
    401A  ILE*     1.3    73.2    -      -       -      +
    403A  VAL*     1.3    64.0    +      -       -      +
    404A  LEU*     3.6    36.2    +      -       +      -
    431A  LEU*     4.5     3.4    -      -       +      -
    433A  LEU*     3.3    34.5    -      -       +      -
    448A  TYR*     3.5    31.2    -      -       +      -
    516A  LEU      3.5     2.3    -      -       -      +
    518A  TYR*     2.8    38.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  LEU*     4.0    18.8    -      -       +      -
    301A  ARG*     5.7     0.2    -      -       -      +
    324A  PHE*     3.7    36.3    -      -       +      -
    348A  TRP      4.3     5.2    +      -       -      +
    349A  ASP*     3.2    18.2    -      -       +      +
    350A  LEU      3.0    24.8    +      -       -      -
    401A  ILE*     3.9     3.0    +      -       +      -
    402A  LEU*     1.3    77.5    -      -       -      +
    404A  LEU*     1.3    63.9    +      -       -      +
    515A  LEU*     3.9    26.2    -      -       +      -
    516A  LEU      3.3     7.9    -      -       -      +
    517A  PHE*     3.8    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350A  LEU*     3.5    21.8    -      -       +      -
    352A  LEU*     4.1    18.6    -      -       +      -
    360A  LEU*     3.7    35.2    -      -       +      -
    364A  MET*     4.5     7.6    -      -       +      -
    402A  LEU*     3.6    33.2    -      -       +      -
    403A  VAL*     1.3    77.5    -      -       -      +
    405A  HIS*     1.3    61.1    +      -       -      +
    406A  LEU*     4.0     1.7    +      -       +      -
    431A  LEU*     4.1     9.2    -      -       +      -
    514A  TYR      3.8     0.7    -      -       -      +
    515A  LEU*     3.4     5.5    -      -       -      -
    516A  LEU*     2.8    50.0    +      -       +      +
    518A  TYR*     3.9    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  GLN*     3.4    40.2    -      -       +      +
    349A  ASP*     4.6     4.9    -      -       -      +
    350A  LEU      2.8    15.1    +      -       -      +
    351A  SER*     2.8    25.7    +      -       -      +
    352A  LEU      2.7    32.3    +      -       -      +
    404A  LEU*     1.3    73.9    -      -       -      +
    406A  LEU*     1.3    60.0    +      -       -      +
    407A  LYS*     3.5     0.7    +      -       +      -
    409A  PHE*     4.4     5.4    -      +       -      -
    514A  TYR*     2.8    50.8    +      +       -      -
    515A  LEU*     3.5    16.8    -      -       +      -
     42B  ARG*     3.8     4.0    -      -       -      -
     70B  VAL*     3.7    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  LEU*     3.8    15.9    -      -       +      +
    354A  ILE*     4.4     5.4    -      -       +      -
    360A  LEU*     4.3    23.6    -      -       +      -
    363A  CYS*     4.9     5.6    -      -       -      -
    404A  LEU      5.0     1.1    -      -       -      +
    405A  HIS*     1.3    74.3    -      -       -      +
    407A  LYS*     1.3    60.1    +      -       -      +
    408A  ARG*     2.8    36.1    +      -       +      +
    425A  VAL*     4.1    25.8    -      -       +      +
    427A  PHE*     5.6     0.7    -      -       +      -
    513A  ALA*     3.5    28.5    -      -       +      +
    514A  TYR*     3.0    36.5    +      -       -      +
    516A  LEU*     4.7    16.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351A  SER*     3.4    34.1    -      -       -      -
    352A  LEU      2.9    27.3    +      -       -      +
    353A  PRO*     4.3     7.2    -      -       +      -
    354A  ILE*     3.8    14.0    +      -       -      +
    405A  HIS*     4.5     0.9    -      -       -      +
    406A  LEU*     1.3    69.2    -      -       -      +
    408A  ARG*     1.3    55.2    +      -       -      +
    409A  PHE*     2.8    33.7    +      -       +      +
    421A  LEU*     4.0     4.0    -      -       -      +
      6B  LYS*     3.1    20.5    +      -       -      +
      7B  THR      2.9    20.2    +      -       -      +
      8B  LEU*     3.8    27.1    -      -       +      +
     68B  HIS*     4.6     2.9    -      -       -      +
     69B  LEU      2.8    29.8    +      -       -      +
     70B  VAL*     4.0    13.2    -      -       +      -
----------------------------------------------------------
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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