Contacts of the strand formed by residues 287 - 290 (chain B) in PDB entry 1EFA


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 THR 287 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173B  HIS*     4.3     6.5    -      -       +      +
    270B  VAL      4.1     0.2    -      -       -      -
    271B  VAL*     3.5     6.8    -      -       +      -
    272B  GLY      2.9    21.1    +      -       -      -
    286B  LEU*     1.3    76.4    -      -       -      +
    288B  THR*     1.3    61.8    +      -       -      +
    323B  LEU*     3.8    19.5    -      -       +      -
    324B  VAL      3.2    15.3    -      -       -      +
    325B  LYS*     4.0     6.3    -      -       -      -
    326B  ARG*     2.8    26.3    +      -       -      +
    328B  THR*     2.7    18.0    +      -       -      -
    329B  THR*     3.4    34.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 288 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  ASP*     2.6    27.8    +      -       -      +
    271B  VAL*     4.5     1.8    -      -       -      -
    272B  GLY*     3.1    14.2    -      -       -      +
    273B  TYR*     3.1     1.6    +      -       -      -
    275B  ASP*     3.4    43.7    +      -       +      +
    279B  SER*     4.2     0.9    -      -       -      +
    286B  LEU*     3.8     4.5    -      -       -      +
    287B  THR*     1.3    77.1    -      -       -      +
    289B  ILE*     1.3    68.8    +      -       -      +
    323B  LEU*     3.6     5.4    -      -       -      +
    324B  VAL*     2.7    41.7    +      -       +      +
    326B  ARG*     3.8    14.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 289 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166B  GLY*     3.5    41.1    -      -       -      +
    169B  LEU*     4.0    12.8    -      -       +      -
    170B  GLY*     4.1     7.2    -      -       -      +
    271B  VAL*     4.7     4.9    -      -       +      -
    272B  GLY      3.3    12.4    +      -       -      +
    273B  TYR*     3.8    29.4    -      -       +      -
    274B  ASP*     2.7    32.9    +      -       -      -
    275B  ASP*     4.2     0.4    -      -       -      -
    288B  THR*     1.3    78.5    +      -       -      +
    290B  LYS*     1.3    63.9    +      -       -      +
    291B  GLN*     4.3     0.9    -      -       -      +
    321B  VAL*     3.9    17.5    -      -       +      -
    322B  SER      3.4    10.5    -      -       -      +
    323B  LEU*     3.9    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 290 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274B  ASP      4.6     0.2    -      -       -      +
    275B  ASP*     3.5    31.2    -      -       +      +
    288B  THR      3.9     1.8    +      -       -      -
    289B  ILE*     1.3    70.2    -      -       -      +
    291B  GLN*     1.3    66.3    +      -       -      +
    292B  ASP*     4.0    22.7    +      -       +      +
    321B  VAL*     3.4    28.8    -      -       -      +
    322B  SER*     2.8    31.2    +      -       -      +
    324B  VAL*     3.7    12.1    -      -       +      -
----------------------------------------------------------
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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