Contacts of the helix formed by residues 591 - 603 (chain A) in PDB entry 1LQF


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 591 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    543A  ARG*     4.2    23.4    +      -       -      +
    567A  ILE*     5.2     9.3    -      -       +      +
    585A  GLN*     4.6     9.6    -      -       -      +
    587A  PRO*     3.7    13.5    -      -       +      -
    588A  LEU*     2.8    34.3    +      -       +      +
    590A  ASN*     1.3    81.3    +      -       -      +
    592A  CYS*     1.3    63.4    +      -       -      +
    593A  GLY      3.3     2.7    -      -       -      -
    594A  HIS*     3.3    23.8    +      -       +      +
    595A  PHE*     3.1    19.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 592 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    587A  PRO*     4.2     4.9    -      -       -      -
    588A  LEU      3.3    15.7    -      -       -      -
    589A  PRO*     4.3    10.8    -      -       -      +
    590A  ASN      3.5     1.4    -      -       -      -
    591A  THR*     1.3    74.9    -      -       -      +
    593A  GLY*     1.3    65.1    +      -       -      +
    595A  PHE*     3.3     9.2    +      -       -      +
    596A  TRP*     3.3    26.7    +      -       -      -
    622A  ALA*     3.9    16.6    -      -       -      -
    623A  GLN      4.8     2.5    -      -       -      -
    624A  TYR*     3.7    28.9    -      -       +      -
    635A  PHE*     3.8    21.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 593 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    590A  ASN      4.9     1.0    +      -       -      -
    591A  THR      3.3     0.6    -      -       -      -
    592A  CYS*     1.3    77.9    -      -       -      +
    594A  HIS*     1.3    57.7    +      -       -      +
    596A  TRP*     3.3     2.3    +      -       -      +
    597A  GLU*     2.9    24.8    +      -       -      +
    635A  PHE*     3.8    14.3    -      -       -      -
    637A  ASP*     3.7    21.0    +      -       -      -
    638A  THR*     3.2    28.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 594 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    543A  ARG*     3.3    48.2    +      -       +      +
    559A  LEU*     3.8    27.1    -      -       +      +
    561A  GLN*     4.3    11.7    +      -       -      -
    566A  TYR      4.5     2.6    +      -       -      -
    567A  ILE*     3.9    12.9    -      -       +      +
    590A  ASN*     3.9    17.4    +      -       -      -
    591A  THR*     3.4    25.4    +      -       -      +
    593A  GLY*     1.3    78.1    -      -       -      +
    595A  PHE*     1.3    56.4    +      -       -      +
    597A  GLU*     3.1     8.4    +      -       -      +
    598A  MET*     2.8    30.8    +      -       -      +
    637A  ASP*     4.3    14.1    +      -       -      +
    638A  THR*     4.5     2.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 595 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    567A  ILE*     3.9    11.6    -      -       +      +
    584A  THR*     4.0    15.3    -      -       +      -
    587A  PRO*     3.4    27.8    -      -       +      -
    591A  THR*     3.1    11.1    +      -       +      +
    592A  CYS*     3.4     9.9    -      -       -      +
    594A  HIS*     1.3    78.6    -      -       -      +
    596A  TRP*     1.3    91.8    +      +       -      +
    598A  MET*     3.3    13.9    +      -       +      +
    599A  VAL*     3.1    33.3    +      -       +      +
    607A  VAL*     3.8    26.2    -      -       +      -
    624A  TYR*     3.5    29.4    -      +       -      -
    712A  VAL*     3.9    22.0    -      -       +      -
    714A  HIS*     4.2     5.6    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 596 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    592A  CYS      3.3    16.7    +      -       -      +
    593A  GLY      4.0     3.8    -      -       -      +
    595A  PHE*     1.3    87.4    -      +       -      +
    597A  GLU*     1.3    62.6    -      -       -      +
    598A  MET      3.2     0.2    -      -       -      -
    599A  VAL*     3.4    28.7    +      -       +      +
    600A  TRP*     3.0    19.1    +      -       -      +
    607A  VAL*     4.4     9.9    -      -       +      -
    624A  TYR*     2.8    48.1    +      +       +      +
    625A  TRP*     4.7     1.3    -      -       +      -
    635A  PHE*     3.5    31.9    -      +       +      -
    640A  LEU*     3.4    21.3    -      -       +      +
    642A  LEU*     3.4    26.9    -      -       +      +
    658A  LEU*     4.1    23.1    -      -       +      -
    660A  LEU*     4.1    22.1    -      -       +      +
    671A  ILE*     4.1    20.2    -      -       +      -
    673A  HIS*     5.1     1.1    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 597 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    559A  LEU*     3.9    14.8    -      -       +      +
    560A  HIS      3.6    11.1    +      -       -      +
    561A  GLN*     2.9    37.5    +      -       -      +
    593A  GLY      2.9    14.1    +      -       -      +
    594A  HIS*     3.1     7.4    +      -       -      +
    596A  TRP*     1.3    77.1    -      -       -      +
    598A  MET*     1.3    55.5    +      -       -      +
    600A  TRP*     3.3     2.6    +      -       -      +
    601A  GLU*     2.5    74.8    +      -       +      +
    638A  THR*     3.4    20.7    -      -       +      +
    640A  LEU*     3.5     9.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 598 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    557A  ILE*     3.9    20.2    -      -       +      -
    559A  LEU*     4.0    14.1    -      -       +      +
    567A  ILE*     4.2    17.7    -      -       +      -
    569A  ALA*     3.9    15.0    -      -       +      -
    582A  ILE*     3.9    32.5    -      -       +      -
    584A  THR*     4.4     3.6    -      -       +      -
    594A  HIS      2.8    11.5    +      -       -      +
    595A  PHE*     3.4    22.4    -      -       +      +
    597A  GLU*     1.3    76.4    -      -       -      +
    599A  VAL*     1.3    60.2    +      -       +      +
    601A  GLU*     4.7     4.5    -      -       -      -
    602A  GLN*     2.8    51.1    +      -       +      +
    712A  VAL*     4.3    21.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 599 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    595A  PHE*     3.1    27.6    +      -       +      +
    596A  TRP*     3.5    31.6    -      -       +      +
    597A  GLU      3.3     0.4    -      -       -      -
    598A  MET*     1.3    74.7    -      -       -      +
    600A  TRP*     1.3    59.6    +      -       -      +
    603A  LYS*     3.0    24.1    +      -       -      -
    604A  SER*     3.2    26.9    +      -       -      +
    607A  VAL*     4.4     4.7    -      -       +      -
    660A  LEU*     4.1     8.3    -      -       +      -
    669A  ARG*     4.4     0.3    +      -       -      -
    671A  ILE*     3.7    32.1    -      -       +      -
    712A  VAL*     4.2    18.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 600 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    596A  TRP      3.0    17.8    +      -       -      +
    597A  GLU*     3.6     4.7    -      -       -      +
    599A  VAL*     1.3    79.4    -      -       -      +
    601A  GLU*     1.3    68.1    +      -       +      +
    603A  LYS*     3.3     5.7    +      -       -      +
    640A  LEU*     4.2    18.8    -      -       +      -
    660A  LEU*     3.6    36.8    -      -       +      -
    662A  ASN*     3.6    21.7    -      -       +      +
    667A  GLU*     3.1    63.7    -      -       +      -
    669A  ARG*     2.7    55.2    +      -       +      +
    562C  GLU*     2.4    42.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 601 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    558A  LYS      4.3     1.2    -      -       -      +
    559A  LEU*     3.6    10.2    -      -       -      +
    560A  HIS*     2.8    67.0    +      -       +      +
    597A  GLU*     2.5    59.2    +      -       +      +
    598A  MET*     4.1     2.9    -      -       -      +
    600A  TRP*     1.3    83.9    -      -       +      +
    602A  GLN*     1.3    68.7    +      -       -      +
    603A  LYS*     3.6    13.4    +      -       -      +
    562C  GLU*     4.9     4.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 602 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    557A  ILE*     4.0    25.6    -      -       +      +
    558A  LYS      4.1    12.5    +      -       -      +
    560A  HIS*     4.2    12.3    +      -       -      -
    582A  ILE*     3.9    23.2    -      -       +      +
    598A  MET*     2.8    33.9    +      -       +      +
    601A  GLU*     1.3    82.9    +      -       -      +
    603A  LYS*     1.3    71.1    +      -       -      +
    604A  SER*     3.3    12.3    -      -       -      +
    709A  GLY*     3.3    15.2    -      -       -      -
    710A  PRO*     4.1     8.0    -      -       +      +
    558C  LYS*     5.5     4.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 603 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    599A  VAL      3.0     7.9    +      -       -      -
    600A  TRP      3.3     7.4    +      -       -      +
    601A  GLU*     4.0     9.1    +      -       -      +
    602A  GLN*     1.3    82.7    -      -       -      +
    604A  SER*     1.3    66.4    +      -       -      +
    605A  ARG      3.8     0.5    +      -       -      -
    669A  ARG*     3.4    40.1    -      -       -      +
    708A  HIS*     4.3     5.9    +      -       -      +
    709A  GLY*     2.8    22.3    +      -       -      +
    561C  GLN      4.8     8.1    +      -       -      -
    562C  GLU*     4.3    16.6    +      -       -      -
    565C  ASP*     4.2    20.6    -      -       -      -
----------------------------------------------------------
 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