Contacts of the strand formed by residues 197 - 213 (chain B) in PDB entry 2X1W


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 LYS 197 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186B  PHE*     3.4     3.3    -      -       -      -
    187B  GLU*     2.7    71.3    +      -       +      +
    189B  THR*     4.4    11.8    +      -       -      +
    194B  GLN*     2.9    37.2    -      -       -      +
    195B  GLY      4.2     6.3    -      -       -      +
    196B  PRO*     1.3    74.4    -      -       -      +
    198B  PRO*     1.3    73.7    -      -       +      +
    199B  VAL*     3.5     4.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 198 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118A  ILE*     4.4    15.5    -      -       +      -
    184B  THR*     4.6     5.6    -      -       +      -
    185B  LEU      3.4     9.0    -      -       -      +
    186B  PHE*     3.6    22.7    -      -       +      -
    196B  PRO      4.4     1.6    -      -       -      +
    197B  LYS*     1.3    88.6    -      -       +      +
    199B  VAL*     1.3    63.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 199 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152B  PHE*     4.2     8.7    -      -       +      -
    183B  LYS      3.9     0.7    -      -       -      +
    184B  THR*     3.4     4.7    -      -       -      -
    185B  LEU*     2.8    53.4    +      -       +      +
    187B  GLU*     3.1    42.8    -      -       +      +
    197B  LYS*     4.1     6.7    -      -       +      +
    198B  PRO*     1.3    80.1    -      -       -      +
    200B  THR*     1.3    63.2    +      -       -      +
    201B  ILE*     4.0     9.3    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 200 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  SER*     3.9    25.1    -      -       -      +
    183B  LYS      3.5     9.0    -      -       -      +
    184B  THR*     3.1    17.6    +      -       -      +
    199B  VAL*     1.3    72.8    -      -       -      +
    201B  ILE*     1.3    67.8    +      -       -      +
    202B  SER*     5.6     0.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 201 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  VAL*     4.0    14.1    -      -       +      -
    144B  PHE*     3.8    25.6    -      -       +      -
    152B  PHE*     3.8    30.7    -      -       +      -
    181B  LEU      3.5     1.0    -      -       -      +
    182B  SER*     3.6     1.8    -      -       -      -
    183B  LYS      2.9    31.7    +      -       -      +
    185B  LEU*     4.3     9.2    -      -       +      -
    199B  VAL*     4.4    13.7    -      -       +      +
    200B  THR*     1.3    81.5    -      -       -      +
    202B  SER*     1.3    65.3    +      -       -      +
    203B  PHE*     3.7    27.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 202 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144B  PHE*     3.5    20.6    -      -       -      -
    180B  TYR*     4.8    20.2    -      -       -      +
    181B  LEU      3.2     8.4    +      -       -      -
    182B  SER*     3.7    17.0    +      -       -      -
    200B  THR*     5.6     0.5    -      -       -      +
    201B  ILE*     1.3    73.9    -      -       -      +
    203B  PHE*     1.3    62.1    +      -       -      +
    204B  ALA      4.3     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 203 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138B  ILE*     4.8     5.8    -      -       +      -
    140B  VAL*     3.7    33.4    -      -       +      -
    143B  GLU*     4.5     9.2    -      -       -      -
    144B  PHE*     3.4    31.0    -      +       -      -
    157B  VAL*     3.8    31.0    -      -       +      -
    159B  VAL*     4.1    18.3    -      -       +      +
    161B  ARG*     4.4     3.4    -      -       -      +
    180B  TYR*     3.6     4.9    -      -       -      -
    181B  LEU*     3.0    33.2    +      -       +      +
    183B  LYS*     4.0    23.6    -      -       +      -
    185B  LEU*     5.2     3.4    -      -       +      -
    201B  ILE*     3.7    36.8    -      -       +      -
    202B  SER*     1.3    73.0    -      -       -      +
    204B  ALA*     1.3    65.1    +      -       -      +
    205B  ASN*     3.5     0.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 204 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143B  GLU*     4.8     2.3    +      -       -      +
    159B  VAL*     3.8     8.7    -      -       -      +
    161B  ARG*     2.8    42.3    +      -       -      +
    178B  THR*     3.7    15.7    -      -       +      -
    179B  SER      3.8     5.2    -      -       -      -
    180B  TYR*     3.8    15.5    -      -       +      -
    203B  PHE*     1.3    72.3    -      -       -      +
    205B  ASN*     1.3    58.6    +      -       -      +
    206B  HIS*     4.4     1.3    -      -       +      -
      1G  NAG      3.7    27.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 205 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  VAL*     4.1     1.5    -      -       +      -
    160B  TYR*     3.1    26.0    +      -       -      +
    178B  THR*     3.7     2.0    -      -       -      -
    179B  SER*     2.8    39.0    +      -       -      +
    181B  LEU*     3.9    27.8    -      -       +      +
    203B  PHE      3.5     0.4    +      -       -      -
    204B  ALA*     1.3    72.3    -      -       -      +
    206B  HIS*     1.3    66.1    +      -       -      +
    207B  THR*     3.3     7.5    +      -       -      +
      1H  NAG      1.5    58.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 206 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  PRO*     3.7    14.2    -      -       +      +
    160B  TYR*     3.1    13.7    +      -       -      +
    161B  ARG*     3.3    28.6    +      -       +      -
    162B  CYS*     3.1    42.6    +      -       +      +
    175B  ASN*     3.4    31.1    -      -       +      +
    177B  SER      3.9     5.2    -      -       -      -
    178B  THR*     3.8     9.6    -      -       +      -
    204B  ALA*     4.4     1.6    -      -       +      -
    205B  ASN*     1.3    71.9    -      -       -      +
    207B  THR*     1.3    59.7    +      -       -      +
    208B  SER      3.7     0.2    -      -       -      -
    209B  CYS*     4.9     0.7    -      -       -      -
      1G  NAG      3.0    38.2    +      -       -      -
      1H  NAG      3.6    11.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  PRO*     4.0    10.6    -      -       -      +
    177B  SER*     2.8    32.0    +      -       -      -
    178B  THR*     4.1     2.3    +      -       -      -
    179B  SER*     4.0    14.6    +      -       -      -
    205B  ASN*     3.3    27.3    +      -       -      +
    206B  HIS*     1.3    74.6    -      -       -      +
    208B  SER*     1.3    63.5    +      -       -      +
      1H  NAG      3.8    20.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  PRO*     4.2     4.0    -      -       -      +
    162B  CYS*     3.7     0.5    -      -       -      -
    175B  ASN*     3.4     6.9    -      -       -      +
    176B  THR*     2.7    45.5    +      -       -      -
    177B  SER*     2.7    25.0    +      -       -      -
    206B  HIS      3.7     0.8    -      -       -      -
    207B  THR*     1.3    83.1    +      -       -      +
    209B  CYS*     1.3    66.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131B  CYS*     3.5    23.5    -      -       -      +
    132B  MET*     3.4     6.7    -      -       -      +
    133B  PRO*     3.3    35.7    -      -       -      +
    162B  CYS*     2.0    44.4    -      -       -      -
    174B  MET      3.1     6.5    -      -       -      +
    176B  THR*     4.2     3.8    -      -       -      -
    208B  SER*     1.3    77.7    -      -       -      +
    210B  ARG*     1.3    64.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131B  CYS*     3.8     7.4    -      -       -      -
    174B  MET      2.9    25.7    +      -       -      +
    176B  THR*     3.8    33.4    +      -       +      +
    209B  CYS*     1.3    76.9    -      -       -      +
    211B  CYS*     1.3    74.0    +      -       -      +
    212B  MET*     3.2    22.6    +      -       +      +
    235O  GLU*     4.5    12.7    +      -       -      +
    237O  SER*     5.4     4.5    +      -       -      -
    240O  GLU*     4.8    12.3    +      -       -      -
    325O  HIS*     3.5    34.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 211 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131B  CYS*     3.7    21.8    -      -       -      +
    165B  CYS      4.6     0.9    -      -       -      -
    166B  CYS*     2.0    55.0    -      -       +      -
    167B  ASN      5.1     0.2    -      -       -      -
    171B  LEU*     4.1    19.6    -      -       +      +
    172B  GLN      3.7     4.7    -      -       -      -
    210B  ARG*     1.3    80.5    -      -       -      +
    212B  MET*     1.3    61.6    +      -       -      +
    194M  TYR*     5.5    12.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 212 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171B  LEU*     3.8     6.1    -      -       -      -
    172B  GLN*     2.7    40.2    +      -       -      +
    174B  MET*     3.4    35.1    -      -       +      +
    175B  ASN      5.2     2.2    -      -       -      +
    176B  THR*     4.1    25.1    -      -       -      -
    210B  ARG*     3.2    24.2    +      -       +      +
    211B  CYS*     1.3    77.7    -      -       -      +
    213B  SER*     1.3    63.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 213 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170B  GLY      3.3    17.3    -      -       -      -
    171B  LEU*     3.7    12.2    -      -       -      +
    174B  MET*     3.9    12.0    -      -       -      +
    212B  MET*     1.3    79.5    -      -       -      +
    214B  LYS*     1.3    66.6    +      -       -      +
----------------------------------------------------------
 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