Contacts of the helix formed by residues 134 - 149 (chain A) in PDB entry 6U81


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 PRO 134 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  THR*     5.1     3.6    -      -       +      -
    128A  ALA*     4.9     0.2    -      -       +      -
    132A  GLY      4.2     4.0    -      -       -      +
    133A  LEU*     1.3    91.2    -      -       +      +
    135A  GLU*     1.3    66.6    +      -       -      +
    136A  SER*     4.1     9.4    -      -       -      +
    137A  ARG*     2.9    37.8    +      -       +      +
    138A  ILE*     3.0    10.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  ARG*     2.6    34.7    +      -       -      -
     61A  PRO*     5.7     0.7    -      -       -      +
     62A  ARG*     5.0     0.9    +      -       -      -
    121A  ILE*     3.8     1.7    -      -       -      +
    124A  ARG*     2.9    46.9    +      -       +      -
    125A  GLU*     4.2    19.3    -      -       +      -
    128A  ALA*     3.9    19.4    -      -       +      +
    133A  LEU      3.4     3.4    +      -       -      -
    134A  PRO*     1.3    71.1    -      -       -      +
    136A  SER*     1.3    76.5    +      -       -      +
    138A  ILE*     3.1     7.9    +      -       -      +
    139A  GLN*     2.9    26.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  PRO*     3.7    36.7    -      -       -      +
     62A  ARG*     5.6     1.8    -      -       -      +
     96A  ARG*     5.1     3.5    +      -       -      -
    134A  PRO*     3.1     8.9    -      -       -      +
    135A  GLU*     1.3    89.9    +      -       -      +
    137A  ARG*     1.3    88.3    +      -       -      +
    139A  GLN*     3.4     9.2    +      -       -      +
    140A  ILE*     3.2    26.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  GLN*     3.8    21.8    +      -       -      -
     96A  ARG*     3.7    25.3    -      -       -      +
     99A  THR*     3.4    19.3    -      -       +      +
    101A  VAL*     6.5     0.2    -      -       +      -
    133A  LEU*     5.2     4.7    -      -       +      -
    134A  PRO*     2.9    31.6    +      -       +      +
    136A  SER*     1.3   100.3    +      -       -      +
    138A  ILE*     1.3    61.6    +      -       -      +
    140A  ILE*     3.1    33.7    +      -       -      +
    141A  TRP*     2.9    28.6    +      -       -      +
      5C    G      6.2     0.2    -      -       -      -
      6C    A      2.9    53.5    +      -       -      +
      7C    T      4.0     8.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  LEU*     3.9    22.7    -      -       +      -
    124A  ARG*     4.0    13.2    -      -       +      +
    127A  LEU*     3.5    20.2    -      -       +      +
    128A  ALA*     3.3    44.0    -      -       +      +
    131A  THR*     3.8     7.6    -      -       -      +
    133A  LEU*     3.8    19.3    -      -       +      +
    134A  PRO      3.0     9.5    +      -       -      +
    135A  GLU*     3.5     6.7    -      -       -      +
    137A  ARG*     1.3    76.4    -      -       -      +
    139A  GLN*     1.3    61.7    +      -       -      +
    141A  TRP*     3.2     7.9    +      -       -      +
    142A  PHE*     3.1    35.7    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  ARG*     4.7     9.4    +      -       -      -
     65A  ILE*     5.9     2.8    -      -       -      +
    124A  ARG*     3.5    36.5    -      -       -      +
    135A  GLU*     2.9    21.7    +      -       -      +
    136A  SER*     3.6    11.3    -      -       -      +
    138A  ILE*     1.3    78.8    -      -       -      +
    140A  ILE*     1.3    63.7    +      -       +      +
    142A  PHE*     3.3     5.7    +      -       -      +
    143A  GLN*     3.1    36.2    +      -       -      +
      7B    T      3.2    39.6    +      -       -      +
      8B    C      3.9    14.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  SER      3.2    15.2    +      -       -      +
    137A  ARG*     3.1    33.2    +      -       -      +
    139A  GLN*     1.3    75.1    -      -       +      +
    141A  TRP*     1.3    68.4    +      -       -      +
    143A  GLN*     3.1    24.1    +      -       +      +
    144A  ASN*     3.0    38.9    +      -       -      +
      5C    G      4.8     1.3    -      -       +      -
      6C    A      4.1    17.0    -      -       +      +
      7C    T      3.8    32.3    -      -       +      -
      8C    T      6.3     0.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  VAL*     5.3     5.4    -      -       +      -
    106A  THR*     4.7     4.0    +      -       +      +
    109A  LEU*     3.5    63.0    -      -       +      +
    110A  LEU*     3.9    15.9    -      -       +      -
    113A  PHE*     4.1    10.1    -      +       +      -
    137A  ARG      2.9    12.9    +      -       -      +
    138A  ILE*     3.2    13.4    +      -       -      +
    140A  ILE*     1.3    77.9    -      -       -      +
    142A  PHE*     1.3    76.5    +      +       -      +
    144A  ASN*     3.3     4.8    +      -       -      +
    145A  ARG*     2.8    57.0    +      -       +      +
    202A  EDO      3.3    39.9    +      -       -      -
      5C    G      3.1    35.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  LEU*     4.1    10.1    -      -       +      -
    112A  ALA*     4.1    16.2    -      -       +      -
    113A  PHE*     3.6    25.4    -      +       +      -
    116A  ASP      3.6    12.8    -      -       -      -
    117A  ARG      3.2    18.6    -      -       -      -
    119A  PRO*     3.4    30.1    -      -       +      -
    124A  ARG*     5.4     1.1    -      -       +      -
    127A  LEU*     3.8    28.9    -      -       +      -
    138A  ILE*     3.1    30.2    +      -       +      +
    139A  GLN*     3.7     8.3    -      -       -      +
    140A  ILE      3.2     0.2    -      -       -      -
    141A  TRP*     1.3    89.7    -      +       -      +
    143A  GLN*     1.3    66.7    +      -       -      +
    145A  ARG*     4.2     1.1    -      -       -      -
    146A  ARG*     2.8    42.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  GLN*     3.1    30.0    +      -       -      +
    140A  ILE*     3.1    30.1    +      -       +      +
    142A  PHE*     1.3    77.2    -      -       -      +
    144A  ASN*     1.3    64.4    +      -       -      +
    146A  ARG*     3.8    23.6    -      -       -      +
    147A  ALA*     3.1    22.5    +      -       -      +
      7B    T      5.2     1.2    -      -       -      +
      8B    C      4.3    21.8    +      -       -      +
      9B    T      3.5    34.4    +      -       +      +
     10B    A      5.0     0.9    +      -       -      -
      7C    T      4.9     7.3    -      -       -      +
      8C    T      4.9     5.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ILE*     3.0    33.0    +      -       -      +
    141A  TRP*     3.8     5.5    -      -       -      +
    143A  GLN*     1.3    77.2    -      -       -      +
    145A  ARG*     1.3    60.9    -      -       -      +
    147A  ALA*     3.3     6.3    +      -       -      +
    148A  ARG*     3.1    50.6    +      -       -      +
    202A  EDO      5.8     1.1    -      -       -      +
     11B    A      4.3     4.7    +      -       -      -
      4C    T      5.7     0.2    -      -       +      -
      5C    G      3.9    18.3    +      -       -      +
      6C    A      2.6    50.6    +      -       -      +
      7C    T      4.3     2.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  LEU*     3.4    28.7    -      -       -      +
    113A  PHE*     3.5    30.8    -      -       +      -
    141A  TRP*     2.8    44.8    +      -       +      +
    142A  PHE      3.3     3.1    +      -       -      +
    144A  ASN*     1.3    73.0    -      -       -      +
    146A  ARG*     1.3    67.3    +      -       -      +
    148A  ARG*     3.0    11.7    +      -       -      -
    149A  HIS*     3.0    58.7    +      -       -      +
    202A  EDO      3.0    37.7    +      -       -      +
      4C    T      5.0     3.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  PHE*     3.6    20.9    -      -       +      -
    117A  ARG*     3.1    57.4    +      -       -      +
    118A  PHE*     3.3    40.1    -      -       -      +
    119A  PRO*     4.6     1.6    -      -       -      +
    142A  PHE*     2.8    41.7    +      -       -      +
    143A  GLN*     3.8    20.7    -      -       -      +
    145A  ARG*     1.3    73.7    -      -       -      +
    147A  ALA*     1.3    61.0    +      -       -      +
    148A  ARG      3.5     0.2    +      -       -      -
    149A  HIS      3.8     6.6    +      -       -      -
    150A  PRO*     4.3     2.9    -      -       -      +
      8B    C      3.4    30.5    +      -       -      -
      9B    T      2.9    31.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  GLN      3.1    17.1    +      -       -      +
    144A  ASN*     3.5     9.2    -      -       -      +
    145A  ARG      3.1     1.0    -      -       -      -
    146A  ARG*     1.3    78.1    -      -       -      +
    148A  ARG*     1.3    65.8    +      -       +      +
    149A  HIS      3.5     0.7    +      -       -      -
    150A  PRO*     4.4     8.7    -      -       -      +
      9B    T      5.7     4.0    -      -       +      +
     10B    A      5.0    27.5    +      -       +      +
     11B    A      6.0     3.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  ASN*     3.1    33.4    +      -       -      +
    145A  ARG*     3.0     2.6    +      -       -      -
    147A  ALA*     1.3    83.1    -      -       +      +
    149A  HIS*     1.3    84.8    +      -       +      +
    150A  PRO*     3.8     5.8    -      -       -      +
    202A  EDO      5.8     3.6    -      -       -      -
     12B    T      3.1    22.8    +      -       -      +
     13B    C      4.4     0.8    -      -       -      +
      4C    T      3.4    43.0    +      -       +      +
      5C    G      2.7    48.5    +      -       -      -
      6C    A      3.2     6.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  PHE*     4.6     8.0    -      -       +      -
    117A  ARG*     2.6    33.0    +      -       -      -
    145A  ARG*     3.0    67.0    +      -       -      +
    146A  ARG      4.1     3.3    -      -       -      +
    147A  ALA      3.5     0.2    -      -       -      -
    148A  ARG*     1.3   102.4    +      -       +      +
    150A  PRO*     1.3    61.8    -      -       -      +
    202A  EDO      4.2     4.7    -      -       -      -
      4C    T      5.1     6.5    +      -       -      -
----------------------------------------------------------
 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