Contacts of the strand formed by residues 154 - 163 (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 LEU 154 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  THR*     3.7    20.9    -      -       +      +
     19A  LYS      3.4    22.9    -      -       -      +
     20A  HIS      3.7     1.8    -      -       -      +
     21A  LEU*     3.7    28.5    -      -       +      +
     40A  LEU*     5.8     0.7    -      -       +      -
    147A  GLN      5.9     1.1    -      -       -      +
    152A  VAL*     4.3    13.5    -      -       +      +
    153A  LYS*     1.3    78.9    -      -       -      +
    155A  THR*     1.3    74.9    -      -       -      +
    156A  TYR*     4.6     4.9    -      -       +      -
    196A  PRO*     3.3     8.2    -      -       -      +
    197A  ILE*     2.8    43.8    +      -       +      +
    199A  CYS*     4.6    17.3    -      -       +      +
    202A  ILE*     4.9    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LYS      3.0    11.1    +      -       -      +
     20A  HIS*     2.7    26.0    +      -       -      +
     21A  LEU      2.9    20.8    +      -       -      -
    154A  LEU*     1.3    79.7    -      -       -      +
    156A  TYR*     1.3    66.4    +      -       -      +
    193A  GLN      3.3     7.0    -      -       -      -
    194A  LYS*     3.0    35.4    -      -       -      +
    195A  VAL      4.3     1.1    -      -       -      -
    196A  PRO*     3.7    18.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  HIS*     3.5     4.0    -      -       -      -
     21A  LEU*     3.0    33.9    -      -       +      +
     23A  LEU*     5.7     0.2    -      -       +      -
    154A  LEU*     4.6     2.9    -      -       +      -
    155A  THR*     1.3    80.9    -      -       -      +
    157A  THR*     1.3    77.6    +      -       -      +
    158A  ALA*     4.3    10.3    -      -       +      -
    170A  MET*     3.7    26.3    -      -       +      +
    171A  SER*     2.9    41.8    +      -       -      -
    172A  ALA*     3.5    13.3    -      -       +      +
    191A  PHE*     5.1     0.9    -      -       +      -
    193A  GLN*     2.8    54.1    +      -       +      +
    197A  ILE*     3.7    27.8    -      -       +      -
    202A  ILE*     4.2    17.0    -      -       +      -
    203A  ALA      4.7     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 157 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  HIS*     3.1    22.5    +      -       +      -
     21A  LEU      2.8     4.6    +      -       -      +
     22A  HIS*     3.2    21.2    -      -       -      +
     23A  LEU*     2.7    25.3    +      -       -      +
    156A  TYR*     1.3    84.7    -      -       -      +
    158A  ALA*     1.3    63.0    +      -       -      +
    159A  GLU*     5.8     1.1    -      -       -      -
    191A  PHE      3.4     4.7    -      -       -      -
    192A  ILE*     3.7    28.7    -      -       +      -
    193A  GLN      4.6     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 158 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  LEU*     2.8    27.1    -      -       +      +
    156A  TYR*     4.3     8.7    -      -       +      -
    157A  THR*     1.3    77.7    -      -       -      +
    159A  GLU*     1.3    69.7    +      -       -      +
    160A  VAL*     4.2     0.4    -      -       +      -
    170A  MET*     3.8    28.5    -      -       +      -
    189A  TYR      3.6     0.6    -      -       -      +
    190A  LYS*     3.4     4.7    -      -       -      +
    191A  PHE*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 159 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  HIS*     3.4    20.1    +      -       -      +
     23A  LEU      2.6     9.2    +      -       -      +
     24A  ARG*     3.1    37.8    -      -       +      -
     25A  CYS*     3.0    25.3    +      -       -      +
    157A  THR*     5.8     1.0    -      -       -      -
    158A  ALA*     1.3    75.5    +      -       -      +
    160A  VAL*     1.3    63.8    +      -       -      +
    188A  ILE*     3.5    21.7    -      -       +      +
    189A  TYR      3.0     6.3    -      -       -      +
    190A  LYS*     3.9    25.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 160 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  CYS*     3.1    18.6    -      -       -      +
     27A  VAL*     3.8    17.3    -      -       +      -
    158A  ALA*     5.1     0.4    -      -       +      -
    159A  GLU*     1.3    80.2    -      -       -      +
    161A  SER*     1.3    60.6    +      -       -      +
    162A  VAL*     3.7    22.9    +      -       +      -
    168A  ALA*     4.3     5.8    -      -       +      -
    170A  MET*     4.2    14.1    -      -       -      -
    187A  LYS      3.5     1.0    -      -       -      +
    188A  ILE*     3.5     3.5    -      -       -      +
    189A  TYR*     2.5    44.5    +      -       +      +
    191A  PHE*     3.4    33.0    -      -       +      -
    204A  LEU*     4.4    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 161 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  CYS      2.7    11.8    +      -       -      -
     26A  SER*     2.6    35.0    +      -       -      -
     27A  VAL      2.9    11.8    +      -       -      -
    160A  VAL*     1.3    72.7    -      -       -      +
    162A  VAL*     1.3    56.4    +      -       -      +
    180A  ASP*     3.0    17.8    +      -       -      -
    186A  ARG*     2.7    39.4    +      -       -      +
    187A  LYS      2.9     8.0    +      -       -      -
    188A  ILE*     3.9    11.5    -      -       -      +
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Residues in contact with VAL 162 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  VAL*     4.0     9.9    -      -       +      -
    160A  VAL*     3.7    20.6    +      -       +      +
    161A  SER*     1.3    79.8    +      -       -      +
    163A  PRO*     1.3    72.3    -      -       +      +
    166A  LEU*     3.4    29.4    -      -       +      +
    168A  ALA*     4.0     8.7    -      -       +      -
    186A  ARG*     3.1     5.6    -      -       -      +
    187A  LYS*     2.4    42.6    +      -       +      -
    189A  TYR*     3.6    22.7    -      -       +      -
    206A  VAL*     3.8    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 163 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  VAL      3.9     2.7    -      -       -      +
     29A  PHE*     4.3    13.9    -      -       +      +
    162A  VAL*     1.3    82.1    -      -       +      -
    164A  LYS*     1.3    56.7    +      -       -      +
    165A  GLU*     3.0    25.1    -      -       -      +
    166A  LEU*     2.6    53.0    +      -       +      +
    185A  SER      3.4    11.0    -      -       -      +
    186A  ARG*     2.8    35.0    -      -       -      +
----------------------------------------------------------
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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