Contacts of the strand formed by residues 207 - 214 (chain B) in PDB entry 2XN9


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 HIS 207 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160B  TRP      3.7     1.5    +      -       -      +
    161B  VAL*     3.4     7.6    -      -       -      +
    162B  ASN*     2.8    44.0    +      -       -      +
    163B  GLY*     4.9     6.8    +      -       -      -
    205B  ARG      3.6     0.4    +      -       -      +
    206B  ASN*     1.3    74.7    -      -       -      +
    208B  PHE*     1.3    66.3    +      -       -      +
    209B  ARG*     4.2    15.4    -      -       +      +
    238B  GLU*     2.9    46.8    +      -       +      +
    239B  ALA      3.9     5.6    -      -       -      -
    240B  TRP*     3.4    50.6    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143B  LEU*     3.7    26.9    -      -       +      -
    159B  TRP*     4.9     4.9    -      -       +      -
    160B  TRP      3.6     2.5    -      -       -      -
    161B  VAL*     3.8    21.8    -      -       +      -
    194B  LEU*     3.9    10.3    -      -       +      -
    196B  VAL*     4.3    13.5    -      -       +      -
    200B  PHE*     3.8    36.1    -      +       -      -
    201B  TRP*     3.7    37.9    -      +       -      -
    206B  ASN*     3.6    23.6    -      -       +      -
    207B  HIS*     1.3    76.4    -      -       -      +
    209B  ARG*     1.3    63.1    +      -       -      +
    238B  GLU*     3.2     6.9    -      -       -      +
    239B  ALA      2.8    46.6    +      -       -      +
    241B  GLY*     3.8     5.8    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158B  SER      3.8     0.2    -      -       -      +
    159B  TRP*     3.3    12.6    -      -       -      -
    160B  TRP*     2.8    54.0    +      -       +      +
    207B  HIS*     4.2     8.3    -      -       +      -
    208B  PHE*     1.3    76.5    -      -       -      +
    210B  CYS*     1.3    69.7    +      -       -      +
    211B  GLN*     2.8    31.6    +      -       +      -
    234B  ILE*     4.1     8.7    -      -       -      +
    236B  SER*     2.6    36.0    +      -       -      -
    237B  ALA      3.6     3.1    -      -       -      -
    238B  GLU*     3.0    37.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125B  VAL*     4.1     5.9    -      -       +      +
    127B  VAL*     3.8    14.5    -      -       +      +
    145B  CYS*     2.0    53.6    -      -       +      -
    157B  LEU*     3.9    22.4    -      -       -      -
    158B  SER      3.6     2.9    -      -       -      -
    159B  TRP*     4.1     9.9    -      -       +      -
    209B  ARG*     1.3    73.0    -      -       -      +
    211B  GLN*     1.3    61.7    +      -       -      +
    212B  VAL*     4.3     2.5    -      -       -      -
    235B  VAL      4.1     0.2    -      -       -      +
    236B  SER*     3.1     7.3    -      -       -      -
    237B  ALA      2.9    28.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 211 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156B  GLU      3.6     1.4    -      -       -      +
    157B  LEU*     3.1     4.5    -      -       -      +
    158B  SER*     2.8    47.1    +      -       -      +
    160B  TRP*     3.6    36.2    +      -       +      +
    209B  ARG*     2.8    31.5    +      -       -      +
    210B  CYS*     1.3    75.5    -      -       -      +
    212B  VAL*     1.3    63.2    +      -       -      +
    213B  GLN*     4.1     3.1    -      -       -      +
    234B  ILE*     3.8    36.5    -      -       +      +
    235B  VAL      3.8     2.0    -      -       -      -
    236B  SER*     3.9     4.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 212 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123B  PRO*     3.7    23.8    -      -       +      -
    125B  VAL*     3.6    31.0    -      -       +      -
    147B  ALA*     4.1     8.3    -      -       +      -
    155B  VAL*     4.0    24.5    -      -       +      -
    156B  GLU      3.5     4.0    -      -       -      +
    157B  LEU*     3.7    28.0    -      -       +      -
    210B  CYS*     4.3     1.6    -      -       -      -
    211B  GLN*     1.3    77.5    -      -       -      +
    213B  GLN*     1.3    64.9    +      -       -      +
    214B  PHE*     3.4     2.4    +      -       -      +
    233B  GLN      3.6     0.2    -      -       -      +
    234B  ILE*     3.4     4.2    -      -       -      -
    235B  VAL*     2.7    40.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 213 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  HIS      4.1     0.2    -      -       -      +
    155B  VAL*     3.2     7.4    -      -       -      +
    156B  GLU*     2.8    47.3    +      -       +      +
    211B  GLN*     4.1     3.6    -      -       -      +
    212B  VAL*     1.3    72.2    -      -       -      +
    214B  PHE*     1.3    82.2    +      -       -      +
    215B  TYR*     3.4    33.8    -      -       +      +
    232B  THR*     3.6    13.9    -      -       -      +
    233B  GLN*     3.2    19.1    +      -       -      +
    234B  ILE*     3.3    27.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 214 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120B  VAL*     4.1     3.4    -      -       +      -
    121B  PHE      3.3    24.5    -      -       -      -
    122B  PRO*     3.8    18.2    -      -       +      -
    123B  PRO*     3.5    30.5    -      -       +      -
    150B  PHE*     4.4     0.4    -      -       +      -
    151B  TYR      3.4    18.2    -      -       -      -
    152B  PRO*     3.8    15.5    -      -       +      -
    154B  HIS      3.8     8.1    -      -       -      -
    155B  VAL*     4.0     8.1    -      -       +      -
    212B  VAL      3.4     0.6    +      -       -      +
    213B  GLN*     1.3    91.2    +      -       -      +
    215B  TYR*     1.3    70.7    +      -       -      +
    216B  GLY*     3.4    27.4    -      -       -      -
    230B  PRO      3.7     6.7    -      -       -      -
    231B  VAL      3.4    21.8    -      -       -      -
    232B  THR*     3.3     2.6    -      -       -      +
    233B  GLN*     2.8    27.9    +      -       +      +
    235B  VAL*     5.5     0.2    -      -       +      -
----------------------------------------------------------
 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