Contacts of the strand formed by residues 1018 - 1026 (chain B) in PDB entry 4BQ9


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 ILE1018 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    985B  PRO*     4.3     7.9    -      -       +      -
   1010B  PRO*     5.1     2.9    -      -       +      -
   1011B  PRO*     4.3     5.6    -      -       +      -
   1014B  ALA*     3.7    36.6    -      -       +      +
   1016B  GLY      3.3     1.5    +      -       -      +
   1017B  LYS*     1.4    76.5    -      -       -      +
   1019B  THR*     1.4    62.6    +      -       -      +
   1020B  GLY      3.6    18.4    -      -       -      +
   1021B  TYR*     3.7    19.3    -      -       +      +
   1043B  GLY*     4.8     0.3    -      -       -      -
   1044B  ASN*     3.6    49.8    +      -       +      +
   1065B  ALA*     4.0    18.8    -      -       +      -
   1066B  ARG      3.3    15.5    -      -       -      +
   1067B  ASN*     4.6     1.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1019 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1017B  LYS*     3.4    20.4    +      -       +      +
   1018B  ILE*     1.4    71.9    -      -       -      +
   1020B  GLY*     1.3    55.5    +      -       -      +
   1042B  VAL*     4.4     4.7    -      -       -      +
   1043B  GLY*     2.9    22.4    +      -       -      -
   1066B  ARG*     2.8    33.7    +      -       -      -
   1067B  ASN*     3.4    11.3    -      -       -      -
   1068B  SER*     4.0    16.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1020 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1018B  ILE*     3.4     9.5    -      -       -      +
   1019B  THR*     1.3    80.2    -      -       -      +
   1021B  TYR*     1.3    60.8    +      -       -      -
   1041B  VAL      3.1    14.1    -      -       -      -
   1042B  VAL*     4.6     0.2    -      -       -      -
   1043B  GLY      3.2    13.8    +      -       -      -
   1066B  ARG*     2.8    39.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR1021 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    989B  PRO*     3.8    14.1    -      -       +      -
   1008B  TRP*     3.4    30.3    -      +       +      -
   1010B  PRO*     3.4    23.2    -      -       -      +
   1011B  PRO*     4.0     6.3    -      -       +      +
   1018B  ILE*     3.7    16.3    -      -       +      +
   1020B  GLY*     1.3    71.6    -      -       -      -
   1022B  ILE*     1.3    66.0    +      -       -      +
   1040B  PRO*     4.5     0.3    -      -       -      +
   1041B  VAL*     2.8    42.6    +      -       +      +
   1043B  GLY      4.0     6.3    -      -       -      -
   1044B  ASN*     2.9    25.9    +      -       -      -
   1045B  ARG      3.3    27.1    -      -       -      -
   1046B  LEU*     3.6     2.3    -      -       +      +
   1063B  ILE*     3.8    10.8    -      -       +      -
   1064B  GLN      3.1    10.5    -      -       -      +
   1065B  ALA*     3.7    29.6    -      -       +      +
   1066B  ARG*     4.6     1.1    +      -       -      +
   1071B  MET*     5.3     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE1022 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1021B  TYR*     1.3    78.5    -      -       -      +
   1023B  ILE*     1.3    66.9    +      -       -      +
   1024B  TYR*     3.5    38.6    -      -       +      +
   1038B  ILE*     3.5    29.4    -      -       +      -
   1039B  GLU      3.8     5.4    -      -       -      +
   1040B  PRO*     4.8     7.9    -      -       +      -
   1062B  LYS      3.7     0.9    -      -       -      +
   1063B  ILE*     3.3     3.7    -      -       -      -
   1064B  GLN*     2.9    34.3    +      -       +      +
   1066B  ARG*     4.2    15.9    -      -       -      +
   1071B  MET*     3.5    33.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE1023 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1006B  VAL*     4.6     9.9    -      -       +      -
   1008B  TRP*     3.8    12.1    -      -       +      -
   1022B  ILE*     1.3    78.4    -      -       -      +
   1024B  TYR*     1.3    69.1    +      -       -      +
   1025B  TYR*     4.9     0.7    -      -       +      -
   1037B  VAL      3.5     1.3    -      -       -      +
   1038B  ILE*     3.6     2.9    -      -       -      -
   1039B  GLU*     2.8    43.0    +      -       +      +
   1041B  VAL*     3.6    26.0    -      -       +      -
   1048B  HIS*     3.6    29.2    -      -       +      -
   1050B  ILE*     4.1    20.6    -      -       +      -
   1061B  PHE*     4.3    11.9    -      -       +      -
   1062B  LYS      3.4     7.6    -      -       -      +
   1063B  ILE*     4.0    24.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR1024 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1022B  ILE*     3.5    25.9    -      -       +      +
   1023B  ILE*     1.3    76.2    -      -       -      +
   1025B  TYR*     1.3    62.4    +      -       -      +
   1033B  ILE*     4.1    22.7    -      -       +      -
   1036B  TRP*     3.5    25.0    -      -       +      -
   1037B  VAL      3.3     4.7    -      -       -      +
   1038B  ILE*     3.5    33.2    -      -       +      -
   1061B  PHE*     3.3     6.9    -      -       -      +
   1062B  LYS*     2.7    46.4    +      -       +      +
   1064B  GLN*     2.6    38.0    +      -       +      -
   1074B  MET*     3.7    26.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR1025 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1023B  ILE*     4.9     0.7    -      -       +      -
   1024B  TYR*     1.3    73.4    -      -       -      +
   1026B  SER*     1.3    62.7    +      -       -      +
   1036B  TRP*     3.5     3.7    -      -       -      -
   1037B  VAL*     2.8    79.5    +      -       +      +
   1039B  GLU*     3.6    33.6    +      -       +      -
   1050B  ILE*     3.9    32.3    -      -       +      +
   1051B  GLN      5.0     1.6    +      -       -      -
   1053B  LEU*     3.8    19.9    -      -       +      +
   1059B  TYR*     3.8    22.7    -      +       +      -
   1060B  TYR      3.1    13.9    -      -       -      +
   1061B  PHE*     3.4    18.6    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER1026 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1025B  TYR*     1.3    79.2    -      -       -      +
   1027B  THR*     1.3    68.6    +      -       -      +
   1028B  ASP*     2.6    32.4    +      -       -      +
   1031B  ALA*     3.8     8.5    -      -       -      +
   1035B  ASP      5.3     2.1    +      -       -      -
   1036B  TRP*     3.5    29.3    -      -       -      -
   1037B  VAL*     5.5     1.3    -      -       -      -
   1059B  TYR*     3.5     5.9    -      -       -      -
   1060B  TYR*     2.8    33.1    +      -       -      -
----------------------------------------------------------
 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