Contacts of the strand formed by residues 2143 - 2147 (chain A) in PDB entry 4YNP


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 GLU2143 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2141A  CYS      4.0     1.3    -      -       -      +
   2142A  LEU*     1.3    76.0    -      -       -      +
   2144A  ARG*     1.3    72.8    +      -       -      +
   2145A  PHE*     3.7     3.1    +      -       -      -
   2154A  ILE*     3.4     7.4    -      -       -      +
   2155A  ARG*     3.0    69.6    +      -       +      +
   2157A  LYS*     3.5    41.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG2144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2068A  SER      5.9     2.0    -      -       -      +
   2069A  TYR*     3.6    13.5    +      -       -      -
   2143A  GLU*     1.3    81.0    -      -       -      +
   2145A  PHE*     1.3    63.0    +      -       -      +
   2152A  TRP*     4.5    25.1    -      -       +      -
   2153A  GLY      3.4    10.8    -      -       -      +
   2154A  ILE*     3.9     3.5    -      -       +      +
   2212A  GLU*     3.0    42.5    +      -       -      +
   2215A  PHE*     3.4    40.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE2145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2143A  GLU*     3.7     7.2    -      -       -      -
   2144A  ARG*     1.3    76.4    -      -       -      +
   2146A  ARG*     1.3    68.1    +      -       -      +
   2147A  ALA*     3.0    21.7    +      -       +      -
   2148A  GLU*     5.3     0.9    -      -       +      -
   2152A  TRP*     3.3    14.4    -      -       -      -
   2153A  GLY      2.8    49.1    +      -       -      -
   2154A  ILE      3.5    30.1    -      -       -      -
   2155A  ARG*     3.5    56.1    -      -       +      +
   2248A  GLY      5.8     0.4    -      -       -      -
   2250A  GLU*     3.8    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG2146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2145A  PHE*     1.3    79.3    -      -       -      +
   2147A  ALA*     1.3    63.8    +      -       -      +
   2148A  GLU*     3.8     1.2    +      -       -      -
   2151A  GLY      3.8     6.7    -      -       -      +
   2152A  TRP*     3.6    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA2147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2145A  PHE*     3.0    20.6    +      -       +      -
   2146A  ARG*     1.3    72.7    -      -       -      +
   2148A  GLU*     1.3    64.1    +      -       -      +
   2149A  GLU      3.2     4.0    +      -       -      -
   2150A  LYS*     4.2    11.9    -      -       +      -
   2151A  GLY*     2.9    28.1    +      -       -      +
   2153A  GLY*     3.7    20.9    -      -       -      +
   2217A  ASN*     4.1    14.4    -      -       -      +
   2250A  GLU*     4.4     5.6    -      -       -      +
----------------------------------------------------------
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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