Contacts of the strand formed by residues 145 - 150 (chain D) in PDB entry 6IAP


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 145 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144D  ALA*     1.3    75.3    -      -       -      +
    146D  VAL*     1.3    59.3    +      -       -      +
    147D  GLN*     4.1     5.6    -      -       +      -
    161D  GLU*     5.1     1.1    -      -       -      -
    195D  GLU      3.5     2.9    -      -       -      +
    196D  VAL*     3.6     1.4    -      -       -      -
    197D  THR*     2.8    55.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 146 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134D  CYS*     3.8    29.8    -      -       -      -
    136D  LEU*     4.5     4.3    -      -       +      -
    144D  ALA      5.3     0.7    -      -       -      +
    145D  LYS*     1.3    72.3    -      -       -      +
    147D  GLN*     1.3    66.5    +      -       -      +
    148D  TRP*     4.4     3.8    +      -       -      +
    161D  GLU*     3.2    37.5    +      -       -      +
    175D  LEU*     3.7    19.1    -      -       +      -
    177D  SER*     3.7    20.8    +      -       -      +
    194D  CYS*     3.8    12.3    -      -       +      -
    195D  GLU      3.3     6.5    -      -       -      +
    196D  VAL*     4.1    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 147 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  LYS*     5.5     5.8    -      -       +      -
    146D  VAL*     1.3    78.7    -      -       -      +
    148D  TRP*     1.3    63.2    +      -       -      +
    149D  LYS*     4.2     2.9    -      -       +      +
    154D  LEU*     3.7    35.1    -      -       +      +
    155D  GLN      6.0     0.4    -      -       -      +
    193D  ALA      3.9     0.2    -      -       -      +
    194D  CYS*     3.2     5.4    -      -       -      +
    195D  GLU*     2.8    56.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 148 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117D  ILE*     3.5    34.1    -      -       +      -
    132D  VAL*     3.7    26.9    -      -       +      -
    134D  CYS*     3.1    28.9    -      -       +      -
    146D  VAL*     5.0     4.3    -      -       +      -
    147D  GLN*     1.3    76.4    -      -       -      +
    149D  LYS*     1.3    57.6    +      -       -      +
    154D  LEU*     3.7     2.6    -      -       -      +
    155D  GLN*     2.8    44.1    +      -       +      +
    159D  SER*     3.5    32.9    -      -       -      +
    177D  SER*     3.2    35.8    +      -       -      -
    179D  LEU*     3.8    36.3    -      -       +      +
    192D  TYR      4.7     1.3    -      -       -      -
    193D  ALA      3.1    29.6    -      -       -      -
    194D  CYS*     3.7     9.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 149 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147D  GLN*     4.2     3.3    -      -       +      -
    148D  TRP*     1.3    75.6    -      -       -      +
    150D  VAL*     1.3    62.8    +      -       -      +
    151D  ASP      3.7     2.1    +      -       -      -
    152D  ASN*     3.4    41.7    +      -       -      +
    153D  ALA      3.2     6.7    -      -       -      +
    154D  LEU*     3.7    37.0    -      -       +      -
    155D  GLN*     4.6     0.4    -      -       -      -
    179D  LEU*     6.3     1.1    -      -       -      -
    191D  VAL*     4.1     1.0    -      -       -      +
    192D  TYR*     4.1     0.5    -      -       -      -
    193D  ALA*     3.0    40.0    +      -       +      +
    195D  GLU*     3.8    34.8    +      -       +      -
    206D  THR*     5.3     6.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 150 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149D  LYS*     1.3    70.3    -      -       -      +
    151D  ASP*     1.3    71.0    +      -       +      +
    153D  ALA*     2.8    28.5    +      -       +      +
    155D  GLN*     3.2    31.5    -      -       +      +
    179D  LEU*     5.7     3.4    -      -       +      -
    181D  LEU*     5.4     5.4    -      -       +      -
    189D  HIS*     3.9    29.2    -      -       +      +
    191D  VAL      3.6     6.1    -      -       -      +
    192D  TYR*     3.2    46.0    -      -       +      +
----------------------------------------------------------
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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