Contacts of the helix formed by residues 288 - 305 (chain A) in PDB entry 4B7B


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 ILE 288 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163A  ILE      5.4     2.9    -      -       -      +
    164A  TYR*     5.3     1.6    -      -       +      -
    165A  ASN*     4.1    31.6    +      -       -      +
    166A  GLU      5.5     1.1    -      -       -      +
    234A  ARG*     3.2    45.1    -      -       +      +
    236A  HIS*     4.6     4.3    -      -       -      +
    267A  ALA*     3.9    18.2    -      -       +      -
    268A  GLY      5.2     4.7    -      -       -      +
    271A  ASN*     5.3    11.2    -      -       -      +
    287A  ASN*     1.3    71.4    -      -       -      +
    289A  ASN*     1.3    65.4    +      -       -      +
    290A  GLN      3.2     1.1    -      -       -      -
    291A  SER*     2.7    30.3    +      -       -      +
    292A  LEU*     3.1    14.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271A  ASN*     4.9    14.1    -      -       +      +
    272A  ILE*     3.4    27.9    -      -       +      +
    287A  ASN*     2.7    14.7    -      -       +      +
    288A  ILE*     1.3    83.4    -      -       +      +
    290A  GLN*     1.3    62.9    +      -       -      +
    292A  LEU*     3.4     6.8    +      -       -      +
    293A  LEU*     3.2    31.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  ASN*     3.3    24.5    +      -       +      +
    288A  ILE      3.2     0.2    -      -       -      -
    289A  ASN*     1.3    77.7    -      -       -      +
    291A  SER*     1.3    59.7    +      -       -      +
    293A  LEU*     3.3    15.8    +      -       -      +
    294A  THR*     2.9    36.6    +      -       -      +
    297A  ARG*     4.5    14.7    +      -       -      -
    313A  GLU      6.1     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  HIS*     2.8    30.6    +      -       -      -
    287A  ASN      4.1     1.6    +      -       -      -
    288A  ILE*     2.7    28.4    +      -       -      +
    290A  GLN*     1.3    78.0    -      -       -      +
    292A  LEU*     1.3    56.6    +      -       -      +
    294A  THR*     3.4     2.3    +      -       -      -
    295A  LEU*     2.9    28.6    +      -       -      +
    314A  SER*     3.9    26.2    +      -       -      -
    316A  LEU*     5.0     5.4    -      -       -      +
   1387A   CO      3.7    19.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  TYR*     4.0    27.6    -      -       +      -
    236A  HIS*     3.9    19.1    -      -       +      -
    266A  LEU*     4.1    24.9    -      -       +      -
    267A  ALA*     3.7    21.8    -      -       +      +
    268A  GLY      3.8    13.5    -      -       -      +
    269A  SER*     4.4    10.3    -      -       -      -
    272A  ILE*     4.4    18.2    -      -       +      -
    288A  ILE*     3.1    15.6    +      -       +      +
    289A  ASN*     3.6     8.3    -      -       -      +
    290A  GLN      3.3     0.2    -      -       -      -
    291A  SER*     1.3    77.2    +      -       -      +
    293A  LEU*     1.3    56.4    +      -       +      +
    295A  LEU*     3.3     4.6    +      -       +      +
    296A  GLY      3.0    11.1    +      -       -      -
    316A  LEU*     5.6     0.9    -      -       +      -
    352A  TYR*     2.8    28.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  ILE*     4.6    24.7    -      -       +      -
    289A  ASN*     3.2    25.5    +      -       +      +
    290A  GLN*     3.6    22.2    -      -       -      +
    291A  SER      3.2     0.2    -      -       -      -
    292A  LEU*     1.3    75.7    -      -       -      +
    294A  THR*     1.3    66.8    +      -       -      +
    296A  GLY*     3.1     3.3    +      -       -      +
    297A  ARG*     3.0    41.4    +      -       +      +
    352A  TYR*     4.6    18.2    -      -       +      -
    355A  ARG*     4.7    13.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  GLN*     2.9    23.0    +      -       -      +
    291A  SER      3.4     4.9    +      -       -      -
    293A  LEU*     1.3    76.7    -      -       -      +
    295A  LEU*     1.3    63.2    +      -       -      +
    297A  ARG*     3.2    24.6    +      -       -      +
    298A  VAL*     2.8    26.8    +      -       +      +
    310A  PRO*     3.4    26.7    -      -       +      +
    313A  GLU*     3.7    29.7    +      -       +      +
    314A  SER*     4.0     6.7    -      -       -      +
    317A  THR*     3.9    14.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  PHE*     3.5    38.6    -      -       +      -
    266A  LEU*     3.8    32.3    -      -       +      -
    291A  SER      2.9    13.3    +      -       -      +
    292A  LEU*     3.4    10.3    -      -       +      +
    294A  THR*     1.3    77.2    -      -       -      +
    296A  GLY*     1.3    56.6    +      -       -      +
    298A  VAL*     3.1     3.5    +      -       +      +
    299A  ILE*     2.9    45.8    +      -       +      +
    316A  LEU*     4.3     8.7    -      -       +      -
    317A  THR*     4.0    23.1    -      -       +      +
    320A  LEU*     5.6     0.2    -      -       +      -
    324A  LEU*     4.6     6.5    -      -       +      -
    332A  ILE*     5.9     4.0    -      -       +      -
    352A  TYR*     3.6    14.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  LEU      3.0    11.6    +      -       -      -
    293A  LEU*     3.1     6.0    +      -       -      -
    295A  LEU*     1.3    77.2    -      -       -      +
    297A  ARG*     1.3    56.2    +      -       -      +
    299A  ILE*     3.3     5.7    +      -       -      +
    300A  THR*     3.0    34.5    +      -       -      -
    352A  TYR*     3.3    21.9    +      -       -      -
    356A  ALA*     4.9     5.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  GLN*     4.5     9.5    +      -       -      -
    293A  LEU*     3.0    33.8    +      -       +      +
    294A  THR*     3.4    24.4    +      -       -      +
    296A  GLY*     1.3    73.4    -      -       -      +
    298A  VAL*     1.3    63.6    +      -       -      +
    300A  THR*     3.8     6.0    -      -       -      -
    301A  ALA*     2.9    26.2    +      -       -      +
    310A  PRO*     3.9    13.4    -      -       +      +
    313A  GLU*     2.8    30.5    +      -       -      -
   1371A   CD      4.1     0.8    -      -       -      -
   1380A   CL      3.3    20.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294A  THR      2.8    17.9    +      -       -      +
    295A  LEU*     3.1     9.2    +      -       -      +
    297A  ARG*     1.3    77.4    -      -       -      +
    299A  ILE*     1.3    64.0    +      -       +      +
    301A  ALA*     3.4     3.1    +      -       -      +
    302A  LEU*     3.1    31.7    +      -       +      +
    309A  VAL*     3.7     5.3    -      -       +      +
    310A  PRO*     3.8    39.0    -      -       +      +
    311A  TYR*     3.6    30.3    -      -       +      +
    317A  THR*     3.8    17.0    -      -       +      -
    324A  LEU*     4.2    13.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  ILE*     4.1    21.8    -      -       +      -
     21A  VAL*     5.8     0.2    -      -       +      -
    102A  PHE*     4.5     3.4    -      -       +      -
    295A  LEU*     2.9    37.8    +      -       +      +
    296A  GLY*     3.8     4.7    -      -       -      +
    298A  VAL*     1.3    75.8    -      -       -      +
    300A  THR*     1.3    57.4    +      -       -      +
    302A  LEU*     3.2    13.4    +      -       +      +
    303A  VAL*     2.8    28.9    +      -       +      +
    324A  LEU*     4.3    25.8    -      -       +      -
    330A  THR*     4.4    13.2    -      -       +      -
    332A  ILE*     4.1    26.5    -      -       +      -
    352A  TYR*     5.9     0.2    -      -       -      +
    356A  ALA*     4.2    18.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  GLY      3.0    20.6    +      -       -      -
    297A  ARG*     3.9     7.2    -      -       -      -
    299A  ILE*     1.3    76.9    -      -       -      +
    301A  ALA*     1.3    58.9    +      -       -      +
    303A  VAL*     3.8     1.0    -      -       +      +
    304A  GLU*     2.8    39.9    +      -       +      +
    355A  ARG*     2.7    33.0    +      -       +      +
    356A  ALA*     3.5    12.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  ARG      2.9    18.3    +      -       -      +
    298A  VAL      3.7     4.3    -      -       -      +
    300A  THR*     1.3    75.7    -      -       -      +
    302A  LEU*     1.3    57.6    +      -       -      +
    304A  GLU*     4.8     0.2    -      -       -      -
    305A  ARG*     2.7    28.1    +      -       -      -
    306A  THR*     3.1    34.8    +      -       -      +
    308A  HIS      3.5    19.5    -      -       -      +
    309A  VAL*     3.9    13.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  ILE*     3.7    18.9    -      -       +      +
    298A  VAL*     3.1    25.2    +      -       +      +
    299A  ILE*     3.2    17.7    +      -       +      +
    301A  ALA*     1.3    75.2    -      -       -      +
    303A  VAL*     1.3    65.6    +      -       -      +
    305A  ARG*     3.3    23.3    +      -       -      +
    309A  VAL*     3.9    21.3    -      -       +      -
    311A  TYR*     3.6    23.6    -      -       -      +
    324A  LEU*     3.8    36.1    -      -       +      +
    325A  GLY*     5.4     1.3    -      -       -      -
    330A  THR*     6.0     0.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  GLY*     4.4    19.8    +      -       -      +
     19A  ILE*     3.9    28.0    -      -       +      -
    299A  ILE*     2.8    21.6    +      -       +      +
    300A  THR*     3.8     3.8    -      -       +      +
    302A  LEU*     1.3    76.4    -      -       -      +
    304A  GLU*     1.3    75.2    +      -       -      +
    305A  ARG*     3.6    13.6    +      -       -      +
    356A  ALA      3.6    16.6    -      -       -      +
    357A  LYS*     4.0    32.8    -      -       +      -
    358A  ASN      5.0     2.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  THR*     2.8    27.2    +      -       +      +
    303A  VAL*     1.3    90.1    -      -       -      +
    305A  ARG*     1.3    73.5    +      -       -      +
    306A  THR*     3.4    20.9    +      -       +      +
    358A  ASN*     5.4     8.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  GLY*     5.0    11.1    -      -       -      +
     17A  LYS      6.0     0.8    -      -       -      +
     18A  ASN*     5.2     9.7    -      -       -      +
    301A  ALA      2.7    11.7    +      -       -      -
    302A  LEU*     3.3    19.4    +      -       -      +
    303A  VAL*     3.8    10.8    +      -       -      +
    304A  GLU*     1.3    80.9    -      -       -      +
    306A  THR*     1.3    63.3    +      -       -      +
    307A  PRO*     3.6     4.7    -      -       -      +
----------------------------------------------------------
 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