Contacts of the strand formed by residues 178 - 181 (chain A) in PDB entry 5MCO


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 GLY 178 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  ASN      3.3     5.5    +      -       -      -
     90A  ILE*     3.7    13.6    -      -       -      +
     91A  LEU*     2.9    22.2    +      -       -      +
    100A  ALA      3.1    13.2    -      -       -      -
    101A  VAL*     3.9     2.5    -      -       -      -
    102A  GLY      4.5     0.2    -      -       -      -
    169A  PHE*     5.1     1.1    -      -       -      -
    170A  PHE*     4.8     3.1    -      -       -      -
    176A  TRP*     3.2    18.5    -      -       -      -
    177A  GLU*     1.3    77.4    -      -       -      +
    179A  ILE*     1.3    61.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 179 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  ILE*     3.5     5.7    -      -       -      +
     91A  LEU*     3.6    12.1    -      -       +      -
     93A  ASP*     3.4    36.3    -      -       +      +
     96A  SER*     4.5     1.3    -      -       -      +
     98A  ASN      3.5     4.0    -      -       -      +
     99A  PHE*     3.4     7.4    -      -       -      -
    100A  ALA*     2.8    51.2    +      -       +      +
    132A  TYR*     3.7    24.9    -      -       +      +
    137A  TRP*     4.4     0.2    -      -       -      +
    169A  PHE*     3.7    21.8    -      -       +      -
    178A  GLY*     1.3    75.3    -      -       -      +
    180A  LEU*     1.3    64.7    +      -       -      +
    181A  GLY      4.7     1.1    -      -       -      +
    501A  BSD      3.6    28.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 180 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  VAL*     4.9     0.9    -      -       +      -
     79A  MET*     4.3    15.3    -      -       +      -
     90A  ILE*     3.5    10.8    -      -       +      -
     91A  LEU      2.8    16.9    +      -       -      +
     92A  VAL*     4.6     5.2    -      -       +      -
     93A  ASP*     3.0    26.9    +      -       -      +
     99A  PHE*     3.7    23.6    -      -       +      -
    148A  ILE*     5.5     1.1    -      -       +      -
    179A  ILE*     1.3    73.7    -      -       -      +
    181A  GLY*     1.3    63.1    +      -       -      +
    182A  LEU*     3.4    27.9    +      -       +      +
    197A  PHE*     3.7    42.0    -      -       +      -
    235A  MET*     4.4    21.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 181 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  ASP      3.5     3.6    -      -       -      -
     96A  SER*     3.0    29.6    -      -       -      -
     97A  SER*     3.7    12.8    -      -       -      +
     98A  ASN      2.9    24.5    +      -       -      -
    179A  ILE*     4.7     0.2    -      -       -      +
    180A  LEU*     1.3    73.9    -      -       -      +
    182A  LEU*     1.3    62.8    +      -       -      +
    183A  ALA      3.5     0.2    -      -       -      -
    196A  PRO*     4.4     8.5    -      -       -      +
    197A  PHE*     4.5     7.6    +      -       -      +
    198A  PHE      5.1     0.5    +      -       -      -
----------------------------------------------------------
 Back to top of page


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