Contacts of the strand formed by residues 102 - 106 (chain D) in PDB entry 6IAP


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 THR 102 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6D  GLN*     2.7    28.5    +      -       -      +
      8D  PRO*     3.1    26.1    +      -       +      +
      9D  SER      3.4     3.8    -      -       -      +
     10D  SER*     4.5     2.0    -      -       -      -
     11D  LEU*     4.1    22.7    -      -       +      -
     21D  ILE*     3.4    34.6    -      -       +      +
     84D  ALA      3.5     0.7    -      -       -      +
     85D  THR*     3.3     4.7    -      -       -      +
     86D  TYR*     2.8    33.6    +      -       -      +
    101D  GLY*     1.4    69.3    +      -       -      -
    103D  LYS*     1.3    59.9    +      -       -      +
    104D  VAL*     3.2     8.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 103 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9D  SER      3.2    10.9    +      -       -      +
     10D  SER*     3.4    11.6    -      -       -      -
     11D  LEU      3.0    27.8    +      -       -      +
     84D  ALA      3.9     4.9    -      -       -      +
     85D  THR*     4.0    23.0    -      -       +      +
    101D  GLY      4.3     0.6    -      -       -      -
    102D  THR*     1.3    67.3    -      -       -      +
    104D  VAL*     1.3    64.9    +      -       -      +
    105D  GLU*     2.8    43.9    +      -       +      +
    142D  ARG*     3.4    24.7    -      -       -      +
    165D  GLU*     3.1    30.1    +      -       -      +
    166D  GLN      5.4     1.0    -      -       -      +
    173D  TYR*     5.1     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 104 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11D  LEU*     3.5    29.6    -      -       +      -
     19D  VAL*     4.4     4.3    -      -       +      -
     21D  ILE*     4.3    13.0    -      -       +      -
     75D  ILE*     5.3     0.7    -      -       +      -
     78D  LEU*     3.9    28.7    -      -       +      -
     82D  ASP      4.3     4.7    -      -       -      +
     83D  PHE*     3.7    23.5    -      -       +      +
     84D  ALA      2.9    30.2    +      -       -      +
     86D  TYR*     3.8    26.2    -      -       +      -
    102D  THR*     3.2     4.9    +      -       +      +
    103D  LYS*     1.3    70.8    -      -       -      +
    105D  GLU*     1.3    63.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 105 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10D  SER*     4.4     8.3    -      -       -      -
     11D  LEU      2.8     8.3    +      -       -      +
     12D  SER*     3.4    17.6    +      -       -      +
     13D  ALA      3.1    23.0    +      -       -      -
     83D  PHE*     3.3    13.2    -      -       -      -
    103D  LYS*     2.8    53.2    +      -       +      +
    104D  VAL*     1.3    76.0    -      -       -      +
    106D  ILE*     1.4    61.4    +      -       -      +
    142D  ARG*     3.6     7.0    +      -       -      -
    166D  GLN*     3.7     9.3    -      -       +      +
    173D  TYR*     2.7    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 106 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  SER*     3.8     2.2    +      -       -      -
     13D  ALA      3.5     8.3    -      -       -      +
     14D  SER*     5.1     4.0    -      -       -      -
     15D  VAL*     5.2     8.1    -      -       +      -
     80D  PRO*     5.2     4.9    -      -       +      +
     83D  PHE*     3.6    42.6    -      -       +      -
    105D  GLU*     1.4    70.4    -      -       -      +
    107D  LYS*     1.3    72.8    +      -       -      +
    108D  ARG*     3.7     0.3    +      -       -      +
    140D  TYR*     3.6     8.3    +      -       -      -
    166D  GLN*     2.8    44.2    +      -       +      +
    167D  ASP      5.6     3.6    -      -       -      +
    168D  SER*     5.6     6.5    -      -       -      +
    171D  SER*     3.7    26.7    -      -       -      +
----------------------------------------------------------
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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