Contacts of the helix formed by residues 137 - 145 (chain 6) in PDB entry 1O1F


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 GLN 137 (chain 6).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     116  ASP*     4.2     6.5    -      -       -      +
     126  ASN      4.1    13.8    +      -       -      +
     746  GLY*     5.0     5.5    +      -       -      -
    1066  THR*     3.8    23.6    +      -       -      +
    1076  GLU*     3.0    35.6    +      -       -      +
    1086  ALA*     3.4    12.2    -      -       -      +
    1096  PRO*     4.8     6.9    -      -       +      +
    1356  ALA      4.6     0.2    -      -       -      -
    1366  ILE*     1.3    72.5    -      -       -      +
    1386  ALA*     1.3    59.8    +      -       -      +
    1406  LEU*     2.9    24.0    +      -       -      +
    1416  SER*     3.1    11.1    +      -       -      -
    1546  ASP*     4.0    15.4    -      -       -      +
    3396  VAL*     4.0    21.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 138 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1096  PRO*     5.0     2.6    -      -       +      +
    1366  ILE*     3.6     3.5    -      -       +      +
    1376  GLN*     1.3    75.7    -      -       -      +
    1396  VAL*     1.3    63.3    +      -       +      +
    1416  SER*     3.2     2.9    +      -       -      -
    1426  LEU*     2.9    21.7    +      -       -      +
    1526  VAL*     3.3    34.2    -      -       +      +
    1546  ASP*     4.1     9.1    +      -       +      +
    1636  VAL*     3.4    43.5    -      -       +      -
    1656  ILE*     3.7     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 139 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1356  ALA*     6.1     1.1    -      -       +      -
    1366  ILE*     3.3    38.1    -      -       +      +
    1376  GLN      3.1     0.6    -      -       -      -
    1386  ALA*     1.3    79.0    -      -       +      +
    1406  LEU*     1.3    60.7    +      -       +      +
    1426  LEU*     3.5     3.0    +      -       -      +
    1436  TYR*     3.3    24.7    +      -       +      +
    1656  ILE*     3.5    27.4    -      -       +      -
    1686  GLY*     4.2    19.7    -      -       -      +
    1706  ALA*     3.9    15.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 140 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1046  LEU*     4.4     1.3    -      -       +      -
    1066  THR*     3.4    33.7    -      -       +      -
    1356  ALA*     3.6    29.6    -      -       +      -
    1366  ILE      3.2     6.4    +      -       -      +
    1376  GLN      2.9     5.6    +      -       -      +
    1396  VAL*     1.3    75.6    -      -       +      +
    1416  SER*     1.3    66.8    +      -       -      +
    1436  TYR*     4.4     5.8    -      -       +      -
    1446  ALA*     3.1    25.1    +      -       -      +
    3386  SER      4.3     0.9    -      -       -      -
    3396  VAL*     3.3    26.7    -      -       +      +
    3426  GLY*     3.4     7.8    -      -       -      +
    3436  GLY*     3.8    21.3    -      -       -      +
    3466  LEU*     3.7    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 141 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1376  GLN      3.1     7.3    +      -       -      -
    1386  ALA*     3.5    11.2    -      -       -      -
    1406  LEU*     1.3    77.1    -      -       -      +
    1426  LEU*     1.3    50.6    -      -       -      +
    1526  VAL*     4.3     5.8    -      -       -      -
    2986  VAL*     4.6     2.2    -      -       -      -
    3006  SER*     3.0    32.3    +      -       -      -
    3386  SER*     3.2    11.0    -      -       -      -
    3396  VAL*     3.1    27.4    +      -       -      +
    637G  LYS*     2.0    44.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 142 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1386  ALA      2.9    16.7    +      -       -      +
    1396  VAL*     3.8     5.2    -      -       -      +
    1406  LEU      3.3     0.2    -      -       -      -
    1416  SER*     1.3    75.0    -      -       -      +
    1436  TYR*     1.3    60.0    +      -       -      +
    1456  SER*     2.9    23.2    +      -       -      -
    1476  ARG*     3.4    26.5    +      -       +      +
    1486  THR*     3.6    34.1    -      -       -      +
    1496  THR      3.8     2.7    -      -       -      +
    1506  GLY*     3.8    24.5    -      -       -      +
    1526  VAL*     3.8    16.3    -      -       +      +
    1656  ILE*     3.9    21.1    -      -       +      -
    2986  VAL*     3.7    26.9    -      -       +      -
    637G  LYS*     3.1     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 143 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1396  VAL*     3.3    17.7    +      -       +      +
    1406  LEU*     3.9     6.7    -      -       +      +
    1426  LEU*     1.3    78.4    -      -       -      +
    1446  ALA*     1.3    54.6    +      -       -      +
    1456  SER      3.0     0.2    -      -       -      -
    1476  ARG      3.4    10.1    -      -       -      +
    3426  GLY*     3.7    15.9    -      -       -      -
    3456  ILE*     3.5    15.0    -      -       +      -
    3466  LEU*     3.8    21.8    -      -       +      -
    541G  MET*     1.9    55.9    -      -       -      +
    542G  PHE*     2.3    67.6    +      +       +      -
    543G  PRO*     2.1    47.0    -      -       +      +
    637G  LYS*     3.7     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 144 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1406  LEU      3.1    18.8    +      -       -      +
    1416  SER      3.4     1.6    -      -       -      +
    1436  TYR*     1.3    74.0    -      -       -      +
    1456  SER*     1.3    28.8    +      -       -      -
    1466  GLY      3.2     2.2    +      -       -      -
    3386  SER*     3.5    12.8    -      -       -      +
    3426  GLY*     3.5    13.5    -      -       -      +
    636G  LYS*     2.8    11.1    -      -       -      +
    637G  LYS*     0.7   236.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 145 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1426  LEU      2.9     5.1    +      -       -      -
    1446  ALA*     1.3    47.1    -      -       -      +
    1466  GLY*     1.3    54.3    +      -       -      +
    1476  ARG*     3.0    45.9    +      -       -      -
    2986  VAL*     3.5    15.0    -      -       -      +
    3306  ILE*     5.0     2.2    -      -       -      -
    3326  PRO*     4.7    13.9    -      -       -      -
    408G  VAL*     6.3     0.2    -      -       -      -
    543G  PRO*     3.7     0.2    -      -       -      -
    544G  LYS*     5.2     0.7    -      -       -      +
    636G  LYS*     5.0     5.2    -      -       -      -
    637G  LYS*     1.2    92.6    +      -       -      +
----------------------------------------------------------
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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