Contacts of the strand formed by residues 16 - 28 (chain A) in PDB entry 1HS6


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 CYS 16 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  SER*     4.0    15.9    -      -       -      -
     12A  PRO      3.1    14.0    +      -       -      +
     13A  ALA*     3.4     2.1    -      -       -      -
     15A  VAL*     1.3    83.8    -      -       -      +
     17A  ARG*     1.3    70.6    +      -       -      +
     42A  VAL*     3.7    20.4    -      -       +      -
     43A  GLN      3.1    14.1    -      -       -      +
     45A  GLN*     3.6     2.4    -      -       -      +
     49A  LEU*     3.8    13.0    -      -       +      -
     52A  LEU*     3.9    29.2    -      -       -      -
     53A  VAL      5.8     0.2    -      -       -      -
    147A  GLN*     3.2    20.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 17 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  ALA*     2.2    49.3    +      -       +      +
     14A  SER*     4.1     4.4    -      -       -      +
     16A  CYS*     1.3    81.7    -      -       -      +
     18A  THR*     1.3    65.3    +      -       -      +
     19A  LYS*     3.3    30.1    -      -       +      +
     42A  VAL*     4.4     2.7    -      -       -      -
     43A  GLN*     2.7    35.6    +      -       -      +
     45A  GLN*     2.6    50.4    -      -       -      +
    147A  GLN*     3.6     3.6    -      -       -      -
    152A  VAL*     4.7     8.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 18 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ARG*     1.3    73.1    -      -       -      +
     19A  LYS*     1.3    63.0    +      -       -      +
     20A  HIS      3.6    22.2    -      -       -      +
     40A  LEU*     4.4    22.7    -      -       +      +
     41A  THR      3.4     8.5    -      -       -      +
     42A  VAL*     3.9    12.6    -      -       -      +
     54A  LEU*     5.2     0.5    -      -       -      +
    146A  CYS*     5.8     0.2    -      -       -      -
    147A  GLN*     2.8    34.7    +      -       -      +
    152A  VAL*     3.7    15.2    -      -       -      +
    153A  LYS      3.3    17.7    -      -       -      +
    154A  LEU*     3.7    20.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 19 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ARG*     3.3    35.6    -      -       +      +
     18A  THR*     1.3    76.7    -      -       -      +
     20A  HIS*     1.3    60.5    +      -       +      +
     41A  THR*     2.6    24.7    +      -       +      +
     42A  VAL      4.9     0.2    -      -       -      -
     43A  GLN*     3.0    44.1    -      -       +      +
     99A  GLU*     5.0     6.5    -      -       -      +
    153A  LYS      4.4     5.4    -      -       -      -
    154A  LEU*     3.4     9.1    -      -       -      +
    155A  THR*     3.0    25.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 20 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  THR*     3.6     8.8    -      -       -      +
     19A  LYS*     1.3    83.9    -      -       +      +
     21A  LEU*     1.3    80.1    +      -       -      +
     22A  HIS*     3.9     7.7    -      -       +      +
     39A  ALA      5.0     0.4    -      -       -      -
     40A  LEU*     3.5     3.5    -      -       -      -
     41A  THR*     2.8    45.2    +      -       -      +
    154A  LEU*     3.7     1.1    -      -       -      +
    155A  THR*     2.7    30.3    +      -       -      +
    156A  TYR*     3.5    25.4    -      -       -      -
    157A  THR*     3.1    27.5    +      -       +      -
    193A  GLN      5.3     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 21 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  HIS*     1.3    82.0    +      -       -      +
     22A  HIS*     1.3    74.2    +      -       -      +
     23A  LEU*     4.1    16.8    -      -       +      -
     38A  ALA*     3.8    21.8    -      -       +      -
     39A  ALA      3.3     4.5    -      -       -      +
     40A  LEU*     3.2    29.2    -      -       +      -
    144A  LEU*     4.2    16.8    -      -       +      -
    154A  LEU*     3.7    15.9    -      -       +      -
    155A  THR      2.9     6.7    +      -       -      -
    156A  TYR*     3.0    16.2    -      -       +      +
    157A  THR      2.8    27.0    +      -       -      +
    202A  ILE*     4.1    26.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 22 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  HIS*     3.9     6.7    -      -       +      +
     21A  LEU*     1.3    74.3    -      -       -      +
     23A  LEU*     1.3    60.6    +      -       -      +
     24A  ARG*     3.1    44.9    +      -       +      +
     37A  THR*     3.6     3.1    +      -       -      +
     38A  ALA*     3.7     0.7    -      -       -      -
     39A  ALA*     2.7    55.0    +      -       +      +
    157A  THR*     3.2    35.0    -      -       -      +
    159A  GLU*     3.4    23.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 23 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  LEU*     4.1    15.7    -      -       +      -
     22A  HIS*     1.3    74.4    +      -       -      +
     24A  ARG*     1.3    71.2    +      -       -      +
     25A  CYS*     3.6    25.6    -      -       +      -
     34A  LEU*     5.8     2.2    -      -       +      -
     37A  THR      3.0    19.7    -      -       -      +
     38A  ALA*     4.5     2.0    -      -       +      -
    106A  PHE*     3.9    23.3    -      -       +      -
    143A  ILE*     6.4     1.1    -      -       +      -
    144A  LEU*     4.4    18.2    -      -       +      -
    156A  TYR*     5.7     0.2    -      -       +      -
    157A  THR      2.7    14.1    +      -       -      +
    158A  ALA*     2.8    22.1    -      -       +      +
    159A  GLU      2.6    33.5    +      -       -      +
    160A  VAL*     5.8     0.2    -      -       +      -
    170A  MET*     4.9    13.2    -      -       +      -
    204A  LEU*     6.4     0.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 24 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  HIS*     3.1    31.8    +      -       +      +
     23A  LEU*     1.3    73.9    -      -       -      +
     25A  CYS*     1.3    62.5    +      -       -      +
     36A  GLY*     3.4     1.0    -      -       -      -
     37A  THR*     2.9    48.0    +      -       -      +
    103A  GLU*     3.9    20.6    +      -       -      -
    159A  GLU*     3.1    39.0    -      -       +      +
    188A  ILE*     5.9     2.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 25 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  LEU*     3.6    30.1    -      -       +      -
     24A  ARG*     1.3    76.3    -      -       -      +
     26A  SER*     1.3    56.2    +      -       -      +
     34A  LEU*     3.9    26.9    -      -       +      -
     35A  THR      3.1    19.3    -      -       -      +
     36A  GLY*     4.1     1.1    -      -       -      -
    106A  PHE*     4.8     4.0    -      -       +      -
    159A  GLU      3.0     6.5    +      -       -      +
    160A  VAL*     3.1    24.6    -      -       -      -
    161A  SER*     2.7    31.1    +      -       -      -
    188A  ILE*     4.9     1.8    -      -       -      +
    204A  LEU*     5.2     3.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 26 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  CYS*     1.3    76.0    -      -       -      +
     27A  VAL*     1.3    59.7    +      -       -      +
     28A  ASP*     3.6     2.1    +      -       -      +
     33A  THR      3.6     2.1    -      -       -      +
     34A  LEU*     3.1     9.2    -      -       -      +
     35A  THR*     2.8    35.8    +      -       -      -
    161A  SER*     2.6    17.7    +      -       -      -
    186A  ARG*     2.5    38.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 27 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  SER*     1.3    72.7    +      -       -      +
     28A  ASP*     1.3    55.7    +      -       -      +
     29A  PHE*     3.6    18.0    +      -       +      -
     33A  THR      3.6     2.0    -      -       -      -
     34A  LEU*     3.3    18.4    -      -       +      -
    117A  TRP*     3.5    30.1    -      -       +      -
    131A  LEU*     3.7    13.9    -      -       +      -
    160A  VAL*     3.8    24.9    -      -       +      -
    161A  SER      2.9     9.7    +      -       -      +
    162A  VAL*     4.0    10.5    -      -       +      -
    163A  PRO*     3.9     4.2    -      -       -      +
    186A  ARG*     2.3    31.1    +      -       -      +
    204A  LEU*     4.4     5.2    -      -       +      -
    206A  VAL*     4.0    11.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 28 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  SER      3.6     2.7    +      -       -      +
     27A  VAL*     1.3    69.8    -      -       -      +
     29A  PHE*     1.3    52.3    +      -       -      +
     30A  THR*     2.8    33.8    +      -       -      -
     31A  ARG*     2.9    36.3    +      -       -      -
     32A  ARG*     2.6    30.1    +      -       -      -
     33A  THR*     2.6    39.3    +      -       -      +
     35A  THR*     5.6     1.6    -      -       -      +
    117A  TRP*     4.0     2.0    -      -       -      -
    186A  ARG*     5.1     4.9    -      -       -      +
----------------------------------------------------------
 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