Contacts of the helix formed by residues 89 - 107 (chain A) in PDB entry 4RG1


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 SER 89 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  ALA*     3.4     4.1    +      -       -      +
     88A  GLN*     1.3    79.7    -      -       -      +
     90A  PRO*     1.3    71.6    -      -       -      +
     91A  GLU*     3.5    10.6    +      -       -      +
     92A  LEU*     3.0    32.1    +      -       -      +
     93A  ARG*     2.8    30.1    +      -       -      +
    171B  LEU*     5.3     6.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  SER*     1.3    89.1    -      -       -      +
     91A  GLU*     1.3    61.2    +      -       -      +
     93A  ARG*     3.4    13.2    -      -       +      +
     94A  THR*     3.2    25.3    +      -       -      -
    141A  GLN*     5.4     0.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  SER*     3.3     8.7    +      -       -      +
     90A  PRO*     1.3    79.5    -      -       -      +
     92A  LEU*     1.3    58.5    +      -       +      +
     94A  THR*     3.4     6.0    +      -       -      -
     95A  TYR*     3.0    25.7    +      -       -      +
    168A  PHE*     4.0    29.9    -      -       +      -
    172A  LEU*     4.4     2.3    -      -       +      +
     89B  SER*     2.7    36.6    +      -       -      -
     91B  GLU*     3.6    24.3    -      -       -      +
     92B  LEU*     3.5    21.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  ALA*     3.9     5.5    -      -       +      +
     88A  GLN*     4.4    18.2    -      -       +      +
     89A  SER*     3.0    26.6    +      -       -      +
     91A  GLU*     1.3    75.4    -      -       +      +
     93A  ARG*     1.3    59.2    +      -       -      +
     95A  TYR*     3.8     5.0    -      -       +      +
     96A  LEU*     2.9    31.9    +      -       -      +
     91B  GLU*     5.4     3.1    -      -       +      +
     92B  LEU*     3.9    21.3    -      -       +      -
     95B  TYR*     3.7    43.7    -      -       +      -
    171B  LEU*     4.2    38.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     3.2    46.8    +      -       +      +
     85A  ASP*     3.1    24.7    +      -       -      +
     87A  ALA*     3.7    11.6    -      -       +      +
     89A  SER      2.8    13.8    +      -       -      +
     90A  PRO*     3.4    17.0    -      -       -      +
     92A  LEU*     1.3    77.6    -      -       -      +
     94A  THR*     1.3    60.6    +      -       -      +
     96A  LEU*     3.4     3.7    +      -       -      +
     97A  ALA*     3.2    19.8    +      -       -      +
    137A  GLN*     4.4     5.9    -      -       -      +
    138A  ALA*     3.6    29.7    -      -       -      +
    141A  GLN*     2.5    38.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  PRO      3.2    12.3    +      -       -      -
     91A  GLU*     3.6     9.8    -      -       -      -
     92A  LEU      3.3     0.2    -      -       -      -
     93A  ARG*     1.3    75.2    -      -       -      +
     95A  TYR*     1.3    66.6    -      -       -      +
     97A  ALA*     3.4     4.7    +      -       -      +
     98A  GLY*     3.2    16.5    +      -       -      -
    141A  GLN*     4.4     9.2    +      -       -      -
    145A  ILE*     4.4    13.6    -      -       +      +
    168A  PHE*     4.5     9.8    -      -       +      -
    169A  ALA*     3.4    43.3    -      -       +      +
    172A  LEU*     4.5     7.8    -      -       +      +
    173A  ASN*     4.7     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  GLU      3.0    17.0    +      -       -      +
     92A  LEU*     3.8     7.2    -      -       +      +
     94A  THR*     1.3    75.7    -      -       -      +
     96A  LEU*     1.3    57.9    +      -       -      +
     98A  GLY      3.0     2.9    +      -       -      -
     99A  GLN*     2.9    58.1    +      -       +      +
    172A  LEU*     4.1    23.3    -      -       +      +
    173A  ASN*     3.1    21.7    +      -       -      +
     92B  LEU*     3.8    33.7    -      -       +      -
     95B  TYR*     3.8    16.2    -      +       -      -
     96B  LEU*     4.7     4.0    -      -       -      +
     99B  GLN*     2.8    34.1    +      -       -      -
    352B  ARG*     3.3    30.7    +      -       -      -
    354B  GLU*     3.9     4.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ILE*     3.5    41.1    -      -       +      +
     84A  LEU*     4.0    16.2    -      -       +      -
     87A  ALA*     4.5    11.0    -      -       +      +
     92A  LEU      2.9    20.0    +      -       -      +
     93A  ARG      3.6     4.7    -      -       -      +
     94A  THR      3.3     0.2    -      -       -      -
     95A  TYR*     1.3    75.5    -      -       -      +
     97A  ALA*     1.3    62.1    +      -       -      +
     99A  GLN*     3.1    24.8    +      -       -      +
    100A  ILE*     3.1    15.4    +      -       +      +
    352A  ARG*     4.5    13.5    -      -       -      +
    354A  GLU*     3.5    45.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  LEU*     4.0     6.0    -      -       +      +
     93A  ARG      3.2    11.2    +      -       -      +
     94A  THR      3.6     4.0    -      -       -      +
     96A  LEU*     1.3    75.1    -      -       -      +
     98A  GLY*     1.3    58.0    +      -       -      +
    100A  ILE*     3.3     6.2    +      -       -      +
    101A  ALA*     3.1    21.7    +      -       -      +
    142A  LEU*     3.8    26.7    -      -       +      -
    145A  ILE*     3.5    42.0    -      -       +      -
    146A  LEU*     3.7     8.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  THR      3.2     6.3    +      -       -      -
     95A  TYR      3.0     9.1    +      -       -      -
     97A  ALA*     1.3    76.9    -      -       -      +
     99A  GLN*     1.3    59.4    +      -       -      +
    101A  ALA*     3.3     1.6    +      -       -      +
    102A  ARG*     2.9    35.5    +      -       -      +
    149A  LEU*     3.8    16.0    -      -       -      +
    169A  ALA      5.3     1.1    -      -       -      -
    173A  ASN*     3.4    25.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  TYR*     2.9    44.3    +      -       +      +
     96A  LEU*     3.1    30.6    +      -       -      +
     98A  GLY*     1.3    75.3    -      -       -      +
    100A  ILE*     1.3    58.8    +      -       -      +
    102A  ARG*     3.5     4.0    +      -       -      +
    103A  ALA*     3.0    30.3    +      -       -      +
    173A  ASN*     3.7     6.7    -      -       -      +
    354A  GLU*     3.6    31.3    +      -       +      +
    355A  GLU*     6.2     0.2    -      -       -      +
    358A  LEU*     5.9     0.9    -      -       -      +
     95B  TYR*     4.2    11.4    +      -       -      -
     99B  GLN*     3.4    22.6    +      -       -      +
    352B  ARG*     5.5     1.3    -      -       -      +
    355B  GLU*     5.3     2.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  LEU*     3.7    41.7    -      -       +      -
     83A  ILE*     3.9    16.8    -      -       +      -
     96A  LEU*     3.1    14.5    +      -       +      +
     97A  ALA*     3.5     9.6    -      -       -      +
     98A  GLY      3.2     0.2    -      -       -      -
     99A  GLN*     1.3    74.3    -      -       -      +
    101A  ALA*     1.3    64.8    +      -       -      +
    103A  ALA*     3.3     5.4    +      -       +      +
    104A  CYS*     3.1    34.9    +      -       -      -
    112A  ILE*     4.9     1.1    -      -       +      -
    142A  LEU*     4.6     6.3    -      -       +      -
    146A  LEU*     4.2    16.2    -      -       +      -
    354A  GLU*     3.7    26.5    -      -       +      +
    357A  ILE*     3.7    15.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  ALA      3.1     7.1    +      -       -      +
     98A  GLY      3.3     2.7    +      -       -      +
    100A  ILE*     1.3    76.7    -      -       -      +
    102A  ARG*     1.3    59.1    +      -       -      +
    104A  CYS*     3.3     2.6    +      -       -      +
    105A  ALA*     3.0    28.4    +      -       -      +
    112A  ILE*     4.7     1.8    -      -       -      -
    146A  LEU*     3.6    15.5    -      -       +      +
    149A  LEU*     3.6    29.6    -      -       +      -
    175A  LEU*     3.7     9.1    -      -       +      +
    262A  TYR*     3.4    27.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  GLY      2.9    18.0    +      -       -      +
     99A  GLN*     4.0     3.1    -      -       -      +
    101A  ALA*     1.3    74.2    -      -       -      +
    103A  ALA*     1.3    60.8    +      -       -      +
    105A  ALA*     3.8     2.7    -      -       -      +
    106A  ILE*     2.8    44.8    +      -       -      +
    173A  ASN*     3.5    28.7    -      -       +      -
    174A  PRO      2.8    37.2    +      -       -      +
    175A  LEU*     3.8    14.6    +      -       +      -
    176A  ASP*     4.8     4.0    +      -       -      -
    348B  SER*     2.9    22.9    +      -       -      -
    350B  THR*     2.6    27.0    +      -       -      -
    351B  ILE*     3.7     2.0    -      -       -      +
    352B  ARG*     3.8    17.6    -      -       -      +
    355B  GLU*     2.8    45.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  GLN      3.0    18.4    +      -       -      +
    100A  ILE*     3.7     7.0    -      -       +      +
    102A  ARG*     1.3    76.3    -      -       -      +
    104A  CYS*     1.3    62.7    +      -       -      +
    106A  ILE*     3.5     1.0    +      -       -      +
    107A  PHE*     3.3    29.1    +      -       -      +
    354A  GLU      5.0     2.7    -      -       -      +
    357A  ILE*     3.8    25.6    -      -       +      -
    358A  LEU*     3.6    33.7    -      -       +      -
    361A  LEU*     4.3     0.5    -      -       -      +
    355B  GLU*     5.1     0.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  VAL*     4.1    31.0    -      -       -      -
    100A  ILE*     3.1    23.2    +      -       -      +
    101A  ALA      3.8     2.2    -      -       -      +
    102A  ARG      3.2     0.2    -      -       -      -
    103A  ALA*     1.3    77.7    -      -       -      +
    105A  ALA*     1.3    62.1    +      -       -      +
    107A  PHE      3.3     1.2    +      -       -      -
    108A  CYS      3.1     4.2    +      -       -      -
    109A  VAL*     2.9    43.0    +      -       +      +
    112A  ILE*     3.6    37.0    -      -       +      -
    259A  TYR*     4.4     1.3    -      -       -      -
    262A  TYR*     4.8     2.5    -      -       +      -
    357A  ILE*     4.6     9.0    -      -       -      -
    361A  LEU*     4.9     0.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  ALA      3.0    17.2    +      -       -      +
    102A  ARG*     3.8     4.3    -      -       -      +
    104A  CYS*     1.3    72.1    -      -       -      +
    106A  ILE*     1.3    68.1    +      -       -      +
    108A  CYS      3.0    10.2    +      -       -      -
    175A  LEU*     4.2    24.7    -      -       +      +
    177A  SER*     3.8    20.9    -      -       -      +
    259A  TYR*     3.6    17.0    -      -       +      +
    262A  TYR*     4.9     1.7    -      -       +      -
    347B  GLY*     3.1    20.0    -      -       -      +
    348B  SER*     4.8     2.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  ARG*     2.8    29.5    +      -       -      +
    103A  ALA*     3.8     8.5    -      -       -      +
    105A  ALA*     1.3    76.9    -      -       -      +
    107A  PHE*     1.3    70.6    +      -       +      +
    108A  CYS*     3.5     2.4    +      -       -      -
    358A  LEU*     4.5     7.4    -      -       +      -
    365A  GLN*     5.5     0.5    +      -       -      -
    343B  CYS*     3.6    25.7    -      -       -      -
    346B  GLN*     3.5     7.8    -      -       +      -
    347B  GLY      2.9    23.8    +      -       -      +
    348B  SER*     4.0    19.5    -      -       -      +
    351B  ILE*     4.0    27.4    -      -       +      -
    355B  GLU*     3.7    31.4    -      -       -      +
    359B  ILE*     4.0     3.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  LEU*     3.8    15.1    -      -       +      +
    103A  ALA      3.3    23.4    +      -       -      +
    104A  CYS      4.2     1.3    -      -       -      +
    105A  ALA      3.1     1.0    -      -       -      -
    106A  ILE*     1.3    79.6    -      -       +      +
    108A  CYS*     1.3    70.1    +      -       -      +
    109A  VAL*     3.3     4.3    +      -       +      -
    358A  LEU*     3.9    17.9    -      -       +      -
    361A  LEU*     3.6    37.7    -      -       +      -
    362A  ALA*     3.6    38.4    -      -       +      -
    365A  GLN*     3.7    35.3    +      -       +      +
    343B  CYS*     4.0     8.1    -      -       -      -
    359B  ILE*     3.8    35.7    -      -       +      -
----------------------------------------------------------
 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