Contacts of the strand formed by residues 261 - 270 (chain A) in PDB entry 4BEI


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 ARG 261 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  GLU*     4.6     8.4    +      -       -      +
    161A  LEU*     3.9     2.0    -      -       -      +
    203A  TRP*     4.5     2.2    -      -       -      -
    252A  GLN*     3.2    33.5    +      -       +      +
    253A  VAL      3.4    10.3    -      -       -      +
    254A  VAL*     3.9    22.4    -      -       +      -
    259A  GLY      3.4     6.1    +      -       -      +
    260A  GLU*     1.3    75.1    -      -       -      +
    262A  VAL*     1.3    72.7    +      -       -      +
    263A  GLU*     3.2    25.3    +      -       -      +
     84B  GLU*     2.5    46.1    +      -       -      +
     85B  GLY      3.9     1.8    +      -       -      -
     86B  ILE*     3.4    23.9    -      -       -      +
    124B  MET*     5.7     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 262 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159A  PRO*     3.7    26.2    -      -       +      -
    160A  GLU      4.1    14.1    -      -       -      +
    161A  LEU*     3.7    17.9    -      -       +      -
    166A  ILE*     3.9    34.1    -      -       +      -
    252A  GLN*     3.4     4.9    -      -       -      +
    253A  VAL*     2.9    37.4    +      -       +      +
    261A  ARG*     1.3    76.6    -      -       -      +
    263A  GLU*     1.3    66.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 263 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  PRO*     5.8     2.9    -      -       -      -
     84A  GLU      4.2    13.0    +      -       -      -
     85A  GLY      4.8     0.5    +      -       -      -
    159A  PRO*     3.5    19.1    -      -       -      +
    166A  ILE*     5.7     1.8    -      -       -      -
    250A  ASN*     3.0    17.6    -      -       -      +
    251A  ALA      3.3     5.4    -      -       -      +
    252A  GLN*     3.5    27.9    -      -       +      +
    261A  ARG*     3.2    20.4    +      -       -      +
    262A  VAL*     1.3    81.6    -      -       -      +
    264A  GLN*     1.3    63.4    +      -       -      +
    265A  SER*     5.0     0.7    -      -       -      +
   1272A  O4B      3.8    18.9    -      -       -      +
     84B  GLU      4.1     5.4    -      -       -      +
     85B  GLY*     3.6     9.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 264 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157A  SER      5.5     1.6    +      -       -      -
    158A  LEU*     5.0     4.2    -      -       -      +
    159A  PRO*     3.7    21.8    -      -       +      +
    166A  ILE*     3.6    17.5    -      -       +      +
    167A  ASP*     4.2     2.3    -      -       -      +
    168A  ILE*     3.4    53.7    +      -       +      +
    249A  ILE      4.0     0.3    -      -       -      +
    250A  ASN*     3.6     0.2    -      -       -      -
    251A  ALA*     2.8    36.7    +      -       -      +
    263A  GLU*     1.3    76.2    -      -       -      +
    265A  SER*     1.3    72.8    +      -       -      +
    266A  MET*     4.1     5.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 265 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  THR*     4.3     5.8    -      -       -      -
    249A  ILE      3.2     7.6    -      -       -      -
    250A  ASN*     2.8    19.8    +      -       -      -
    263A  GLU*     4.2     1.7    +      -       -      +
    264A  GLN*     1.3    79.4    -      -       -      +
    266A  MET*     1.3    69.7    +      -       -      +
   1272A  O4B      2.7    47.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 266 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168A  ILE*     3.7    44.9    -      -       +      +
    169A  LYS*     4.2     0.7    -      -       -      -
    170A  ASN*     4.0    17.0    -      -       +      +
    186A  PHE*     4.0    27.1    -      -       +      -
    204A  MET*     5.2     0.4    -      -       +      -
    248A  THR*     3.5     3.8    -      -       -      -
    249A  ILE*     2.6    66.3    +      -       +      +
    251A  ALA      5.1     1.6    -      -       -      +
    264A  GLN*     4.1     7.0    -      -       +      +
    265A  SER*     1.3    86.3    -      -       -      +
    267A  THR*     1.3    62.8    +      -       -      +
    268A  VAL*     5.7     0.2    -      -       +      -
   1272A  O4B      6.3     0.4    -      -       -      -
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Residues in contact with THR 267 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170A  ASN*     5.1     1.4    +      -       -      -
    175A  ASN*     4.2    16.9    +      -       -      +
    246A  GLU*     4.1    24.7    +      -       -      +
    247A  TYR      3.4     9.0    +      -       -      -
    248A  THR*     4.8     6.1    -      -       -      -
    266A  MET*     1.3    78.6    -      -       -      +
    268A  VAL*     1.3    68.9    +      -       -      +
    269A  VAL*     4.9     5.1    +      -       -      +
   1272A  O4B      4.7    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 268 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170A  ASN*     4.2     3.1    -      -       -      +
    174A  ILE      4.2    13.9    -      -       -      +
    175A  ASN      3.7     9.0    -      -       -      +
    176A  SER*     4.3     8.5    -      -       -      -
    177A  VAL*     4.7     1.8    -      -       +      +
    184A  VAL*     4.4    11.7    -      -       +      -
    186A  PHE*     4.1    15.5    -      -       +      -
    238A  PHE*     3.7    33.7    -      -       +      -
    247A  TYR*     2.7    47.1    +      -       -      +
    249A  ILE*     4.0    18.4    -      -       +      -
    266A  MET      5.3     0.2    -      -       -      -
    267A  THR*     1.3    80.3    +      -       -      +
    269A  VAL*     1.3    68.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 269 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175A  ASN*     3.2    16.2    +      -       +      +
    176A  SER*     3.1    13.9    -      -       -      -
    177A  VAL      3.0    23.4    +      -       -      -
    245A  GLY*     3.3    16.2    -      -       -      +
    246A  GLU*     4.5    11.2    -      -       +      +
    267A  THR*     4.9     6.5    -      -       -      +
    268A  VAL*     1.3    78.3    -      -       -      +
    270A  LYS*     1.3    68.8    +      -       -      +
    271A  LYS*     4.2    14.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 270 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177A  VAL*     3.6    13.7    -      -       +      -
    178A  GLU      4.0    13.5    -      -       -      +
    179A  SER*     2.9    31.5    +      -       -      +
    181A  GLY*     4.6     0.4    -      -       -      -
    238A  PHE*     4.6    11.9    -      -       +      -
    239A  ASP      3.3    20.4    -      -       -      -
    240A  LYS*     3.0     9.0    +      -       -      +
    242A  TYR*     2.6    37.7    +      -       +      +
    243A  PRO      3.7    10.5    -      -       -      +
    244A  ALA*     3.3     2.1    -      -       -      +
    245A  GLY*     2.7    35.8    +      -       -      +
    247A  TYR*     3.8    20.9    -      -       +      -
    268A  VAL*     4.1     1.4    +      -       -      +
    269A  VAL*     1.3    73.8    -      -       -      +
    271A  LYS*     1.3    70.2    +      -       -      +
----------------------------------------------------------
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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