Contacts of the helix formed by residues 490 - 505 (chain A) in PDB entry 3II5


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 490 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    488A  ALA      3.7     2.8    +      -       -      -
    489A  PRO*     1.3    73.0    -      -       -      +
    491A  PRO*     1.3    68.9    -      -       -      +
    492A  GLN*     2.7    40.2    +      -       +      +
    493A  GLN*     2.7    54.2    +      -       +      +
    494A  LEU*     3.0    10.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 491 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489A  PRO      3.8     4.2    -      -       -      +
    490A  THR*     1.3    88.1    -      -       -      +
    492A  GLN*     1.3    65.0    +      -       -      +
    494A  LEU*     4.0    15.1    -      -       +      +
    495A  GLN*     3.3    23.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 492 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    490A  THR*     2.7    24.7    +      -       +      +
    491A  PRO*     1.3    84.8    -      -       -      +
    493A  GLN*     1.3    62.2    +      -       +      +
    495A  GLN*     3.5     5.1    +      -       -      +
    496A  ALA*     3.4    19.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 493 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    467A  PHE*     5.8     7.8    -      -       +      -
    484A  LEU*     4.3    23.9    -      -       +      +
    486A  VAL*     4.5    17.3    -      -       -      +
    488A  ALA      4.3     2.8    -      -       -      +
    489A  PRO*     3.4    10.8    -      -       +      +
    490A  THR*     2.7    46.4    +      -       +      +
    492A  GLN*     1.3    72.3    -      -       +      +
    494A  LEU*     1.3    64.6    +      -       -      +
    495A  GLN      3.0     1.8    -      -       -      -
    496A  ALA*     3.2     7.1    +      -       -      +
    497A  PHE*     3.0    24.8    +      -       -      +
    524A  LEU*     4.6     2.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 494 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489A  PRO*     4.8    16.5    -      -       +      +
    490A  THR      3.0    14.5    +      -       -      +
    491A  PRO*     4.1    11.2    -      -       +      -
    493A  GLN*     1.3    77.2    -      -       -      +
    495A  GLN*     1.3    60.4    +      -       -      +
    497A  PHE*     3.6     9.4    -      -       +      +
    498A  LYS*     3.2    44.1    +      -       -      +
    520A  THR*     5.7     3.6    -      -       +      -
    524A  LEU*     4.2    26.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 495 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491A  PRO      3.3    19.2    +      -       -      +
    492A  GLN*     3.5     6.5    -      -       -      +
    493A  GLN      3.0     0.2    -      -       -      -
    494A  LEU*     1.3    76.2    -      -       -      +
    496A  ALA*     1.3    65.9    +      -       -      +
    497A  PHE      3.0     1.6    -      -       -      -
    498A  LYS*     2.9    32.8    +      -       -      +
    499A  ASN*     2.9    42.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 496 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492A  GLN      3.4     9.6    +      -       -      +
    493A  GLN*     3.2     9.7    +      -       -      +
    495A  GLN*     1.3    78.7    -      -       -      +
    497A  PHE*     1.3    56.4    +      -       -      +
    499A  ASN*     3.8    11.2    -      -       -      +
    500A  GLU*     3.0    30.9    +      -       -      +
    599A  VAL*     5.3    13.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 497 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    484A  LEU*     5.1     7.6    -      -       +      -
    493A  GLN      3.0    17.1    +      -       -      +
    494A  LEU*     3.6    11.4    -      -       +      +
    496A  ALA*     1.3    76.2    -      -       -      +
    498A  LYS*     1.3    75.4    +      -       +      +
    500A  GLU*     3.3     6.2    +      -       -      +
    501A  VAL*     3.0    32.6    +      -       +      +
    518A  TYR*     3.9    17.3    -      +       +      -
    519A  SER      3.7    12.6    -      -       -      -
    520A  THR*     4.1    17.7    -      -       +      -
    524A  LEU*     3.7    30.5    -      -       +      -
    525A  ALA      3.5    33.2    -      -       -      -
    526A  ILE*     3.6    24.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 498 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494A  LEU*     3.2    45.3    +      -       -      +
    495A  GLN*     2.9    25.1    +      -       -      +
    497A  PHE*     1.3    84.6    -      -       +      +
    499A  ASN*     1.3    54.7    +      -       -      +
    501A  VAL*     3.7     5.3    -      -       -      +
    502A  GLY*     2.8    33.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 499 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    495A  GLN*     2.9    47.3    +      -       -      +
    496A  ALA*     3.8    11.2    -      -       -      +
    498A  LYS*     1.3    76.7    -      -       -      +
    500A  GLU*     1.3    59.0    +      -       -      +
    502A  GLY*     3.4     2.6    +      -       -      -
    503A  VAL*     2.8    33.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 500 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  831      3.1    44.3    +      -       +      -
    482A  LYS*     3.0    30.8    +      -       -      +
    496A  ALA      3.0    18.5    +      -       -      +
    497A  PHE*     3.8     5.1    -      -       -      +
    499A  ASN*     1.3    73.1    -      -       -      +
    501A  VAL*     1.3    66.5    +      -       -      +
    503A  VAL*     3.0     9.6    +      -       -      +
    504A  LEU*     2.9    25.8    +      -       +      +
    526A  ILE*     3.6    19.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 501 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497A  PHE*     3.0    27.6    +      -       +      +
    498A  LYS*     3.7     5.6    -      -       -      +
    500A  GLU*     1.3    77.9    -      -       -      +
    502A  GLY*     1.3    59.8    +      -       -      +
    504A  LEU*     3.2     8.0    +      -       -      +
    505A  ARG*     2.9    42.8    +      -       -      +
    515A  PHE*     4.5    10.7    -      -       +      -
    518A  TYR*     4.0    37.7    -      -       +      -
    526A  ILE*     3.8    26.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 502 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498A  LYS      2.8    20.8    +      -       -      -
    499A  ASN*     3.7     3.1    -      -       -      -
    500A  GLU      3.2     0.2    -      -       -      -
    501A  VAL*     1.3    74.5    -      -       -      +
    503A  VAL*     1.3    59.5    +      -       -      +
    505A  ARG*     3.5    18.1    -      -       -      +
    506A  LYS*     3.4    23.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 503 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  831      4.7    20.6    -      -       +      -
    499A  ASN*     2.8    27.1    -      -       +      +
    500A  GLU*     3.0     8.4    +      -       -      +
    502A  GLY*     1.3    75.5    -      -       -      +
    504A  LEU*     1.3    65.7    +      -       -      +
    506A  LYS*     3.1    24.4    +      -       +      +
    507A  THR*     3.6     7.8    -      -       -      +
    571A  ILE*     3.9    35.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 504 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  831      3.7    62.4    -      -       +      +
    500A  GLU*     2.9    26.0    +      -       +      +
    501A  VAL*     3.7     4.5    -      -       -      +
    503A  VAL*     1.3    78.0    -      -       -      +
    505A  ARG*     1.3    58.4    +      -       -      +
    507A  THR*     2.4    36.9    +      -       -      +
    512A  ILE*     5.5     0.2    -      -       +      -
    513A  LEU*     4.7    10.3    -      -       +      +
    515A  PHE*     3.8    29.2    -      -       +      +
    526A  ILE*     4.0    25.8    -      -       +      -
    528A  THR*     4.9     3.8    -      -       +      -
    508B  ARG*     3.7     3.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 505 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    447A  ASP      4.1    14.5    +      -       -      +
    449A  TRP*     4.2    14.8    -      -       +      +
    501A  VAL*     2.9    32.2    +      -       -      +
    502A  GLY*     3.5    18.4    -      -       -      +
    504A  LEU*     1.3    74.8    -      -       -      +
    506A  LYS*     1.3    56.0    +      -       +      +
    507A  THR      3.1     1.8    -      -       -      -
    515A  PHE*     4.0    19.2    -      -       +      -
    518A  TYR*     5.7     6.0    +      -       -      -
    726A  PO4      3.3    46.3    +      -       -      +
    449B  TRP*     3.3    14.9    -      -       -      -
    508B  ARG*     3.0    21.6    +      -       -      +
----------------------------------------------------------
 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