Contacts of the strand formed by residues 187 - 190 (chain B) in PDB entry 1Q41


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 LEU 187 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138B  THR*     3.2     3.3    -      -       -      -
    139B  VAL*     2.8    53.4    +      -       +      +
    162B  MET*     5.9     0.9    -      -       -      -
    165B  LEU*     3.8    30.1    -      -       +      -
    182B  ILE*     4.9     5.6    -      -       +      -
    183B  LYS      3.4    18.2    -      -       -      +
    184B  PRO*     3.2     7.9    +      -       +      +
    185B  GLN      3.4     0.2    -      -       -      -
    186B  ASN*     1.3    85.4    -      -       +      +
    188B  LEU*     1.3    61.9    +      -       -      +
    196B  LEU*     4.0    14.6    -      -       +      -
    197B  LYS      3.9     3.6    -      -       -      -
    198B  LEU*     3.8    23.1    -      -       +      -
    246B  VAL*     4.0    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110B  VAL*     4.3     7.6    -      -       +      -
    135B  VAL*     3.6    28.7    -      -       +      -
    137B  GLU      3.4     3.1    -      -       -      +
    138B  THR*     3.8    22.9    -      -       +      -
    185B  GLN      4.6     2.9    -      -       -      +
    187B  LEU*     1.3    72.7    -      -       -      +
    189B  LEU*     1.3    60.6    +      -       -      +
    196B  LEU*     3.1     9.4    -      -       -      +
    197B  LYS*     2.8    43.0    +      -       +      +
    199B  CYS*     3.8    30.5    -      -       +      -
    452B  IXM      3.5    53.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135B  VAL*     3.2     8.3    -      -       -      +
    137B  GLU*     2.8    38.9    +      -       +      +
    138B  THR      3.7     0.7    -      -       -      +
    139B  VAL*     3.6    39.0    -      -       +      +
    142B  VAL*     3.7    25.6    -      -       +      -
    161B  TYR*     3.4    58.8    -      -       +      +
    188B  LEU*     1.3    82.4    -      -       -      +
    190B  ASP*     1.3    62.9    +      -       -      +
    191B  PRO*     3.3     4.3    -      -       +      +
    195B  VAL      3.4     3.4    -      -       -      +
    196B  LEU*     3.9    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135B  VAL*     3.7     9.2    -      -       +      +
    136B  PRO*     4.2    12.8    -      -       -      +
    161B  TYR*     5.1     1.1    +      -       -      -
    189B  LEU*     1.3    74.7    -      -       -      +
    191B  PRO*     1.3    60.8    -      -       -      +
    192B  ASP*     2.9    22.6    +      -       -      +
    193B  THR*     2.9    31.5    +      -       -      +
    194B  ALA*     2.8    34.3    +      -       -      -
    195B  VAL*     2.9    17.4    +      -       +      +
----------------------------------------------------------
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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