Contacts of the strand formed by residues 173 - 182 (chain I) in PDB entry 3SKJ


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 TYR 173 (chain I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110I  THR*     5.5     5.9    -      -       -      +
    141I  ASP*     3.1    22.5    +      -       -      -
    142I  TYR*     2.9    47.7    +      -       +      +
    143I  PHE*     3.6    30.4    -      +       -      -
    144I  PRO*     4.5     0.9    -      -       +      -
    145I  GLU*     3.5    54.3    -      -       +      +
    165I  ALA*     3.9     7.0    -      -       +      -
    166I  VAL      3.2    17.9    -      -       -      +
    167I  LEU*     4.0    28.1    -      -       +      +
    168I  GLN*     3.9     0.9    -      -       -      -
    172I  LEU*     1.3    75.5    -      -       -      +
    174I  SER*     1.3    60.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 174 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138I  LEU*     3.5    20.8    -      -       -      +
    139I  VAL      3.4    10.8    +      -       -      -
    140I  LYS*     4.1     9.3    -      -       -      +
    142I  TYR*     4.1     1.6    -      -       -      -
    164I  PRO      4.5     0.7    -      -       -      +
    165I  ALA*     3.3     2.1    -      -       -      -
    166I  VAL*     2.9    40.5    +      -       -      +
    168I  GLN*     3.8    26.9    +      -       -      -
    173I  TYR*     1.3    75.7    -      -       -      +
    175I  LEU*     1.3    63.5    +      -       -      +
    178M  THR*     5.7     2.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 175 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138I  LEU*     3.5     2.8    -      -       -      +
    139I  VAL*     2.6    59.7    +      -       +      +
    142I  TYR*     3.8    24.9    -      -       +      +
    147I  VAL*     4.2    19.5    -      -       +      +
    149I  VAL*     4.0    15.3    -      -       +      -
    162I  THR*     4.0    12.1    -      -       +      -
    163I  PHE      3.4    23.3    -      -       -      +
    164I  PRO      5.1     1.6    -      -       -      -
    165I  ALA*     4.3     9.9    -      -       +      +
    174I  SER*     1.3    76.5    +      -       -      +
    176I  SER*     1.3    78.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 176 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124I  LEU*     4.7    11.2    -      -       -      -
    137I  CYS      3.3     9.4    -      -       -      -
    138I  LEU*     4.0    13.2    -      -       -      +
    163I  PHE*     3.0    41.9    +      -       -      +
    175I  LEU*     1.3    83.3    +      -       -      +
    177I  SER*     1.3    62.9    +      -       -      +
    178I  VAL*     4.9     2.9    -      -       -      -
    133M  VAL*     4.8     4.4    -      -       -      +
    176M  SER*     3.6    23.6    +      -       -      -
    178M  THR*     4.5     6.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 177 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136I  GLY*     3.0     2.8    -      -       -      -
    137I  CYS*     2.7    41.4    +      -       -      -
    149I  VAL*     3.7    26.8    -      -       -      +
    151I  TRP*     3.1    24.4    +      -       -      -
    160I  VAL*     4.0     0.9    -      -       -      +
    161I  HIS      3.3     6.2    +      -       -      -
    162I  THR*     3.0    24.8    +      -       -      -
    175I  LEU*     4.2     0.8    -      -       -      +
    176I  SER*     1.3    76.0    -      -       -      +
    178I  VAL*     1.3    63.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 178 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124I  LEU*     4.4    17.5    -      -       +      -
    135I  LEU      3.2    12.8    -      -       -      +
    136I  GLY*     4.0     0.2    -      -       -      -
    151I  TRP*     4.7     0.4    -      -       -      -
    160I  VAL*     3.2     4.9    -      -       -      +
    161I  HIS*     2.7    67.1    +      -       +      +
    163I  PHE*     3.9    15.9    -      -       +      -
    176I  SER*     4.9     2.9    -      -       -      -
    177I  SER*     1.3    80.9    +      -       -      +
    179I  VAL*     1.3    68.1    +      -       -      +
    180I  THR*     6.0     1.3    -      -       +      -
    118M  PHE*     5.2     2.2    -      -       +      -
    133M  VAL*     6.2     1.3    -      -       +      -
    135M  LEU*     3.8    35.7    -      -       +      -
    137M  ASN*     5.0     2.0    -      -       -      +
    176M  SER*     6.0     0.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 179 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133I  ALA      3.6     0.3    -      -       -      +
    134I  ALA*     3.4     4.7    -      -       -      +
    135I  LEU*     2.8    35.8    +      -       +      +
    151I  TRP*     3.4    45.8    -      -       +      +
    156I  LEU*     3.4    27.1    -      -       +      -
    158I  SER      3.6    20.4    -      -       -      +
    159I  GLY      3.4    10.3    -      -       -      -
    160I  VAL*     3.8     4.5    -      -       +      -
    178I  VAL*     1.3    79.1    -      -       -      +
    180I  THR*     1.3    71.7    +      -       -      +
    181I  VAL*     4.1     8.2    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 180 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132I  THR*     4.0    17.7    -      -       +      -
    133I  ALA      3.1     8.7    -      -       -      +
    134I  ALA*     4.9     7.9    -      -       +      -
    156I  LEU*     5.9     0.3    -      -       -      +
    158I  SER      4.2     6.6    -      -       -      +
    159I  GLY*     3.4    18.1    +      -       -      +
    161I  HIS*     5.5     0.6    -      -       -      +
    178I  VAL*     6.0     2.5    -      -       +      -
    179I  VAL*     1.3    84.6    -      -       -      +
    181I  VAL*     1.3    65.0    +      -       -      +
    116M  PHE*     5.0     5.8    -      -       +      -
    135M  LEU*     6.1     1.1    -      -       +      -
    137M  ASN*     3.5    35.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 181 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132I  THR*     3.6     5.4    -      -       -      -
    133I  ALA*     2.8    42.0    +      -       +      +
    135I  LEU*     4.2    18.2    -      -       +      -
    156I  LEU*     4.5     5.2    -      -       +      -
    179I  VAL*     4.2    15.9    -      -       +      -
    180I  THR*     1.3    81.6    -      -       -      +
    182I  PRO*     1.3    80.3    -      -       +      +
    186I  LEU*     4.0    23.6    -      -       +      -
    191I  TYR*     3.9    31.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 182 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131I  GLY      3.7     9.9    -      -       -      +
    132I  THR*     4.7     2.0    -      -       -      +
    181I  VAL*     1.3    91.8    -      -       +      +
    183I  SER*     1.3    65.1    +      -       -      +
    184I  SER*     3.2    12.7    +      -       -      +
    185I  SER*     3.2    27.8    +      -       -      +
    186I  LEU      4.2     1.2    +      -       -      -
    191I  TYR*     5.2     1.8    -      -       -      +
----------------------------------------------------------
 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