Contacts of the strand formed by residues 16 - 21 (chain 6) in PDB entry 1O18


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 16 (chain 6).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     136  GLY*     3.1    17.0    +      -       -      -
     156  GLY*     1.3    82.4    -      -       -      +
     176  VAL*     1.3    60.2    +      -       -      +
     186  LYS*     2.7    38.1    +      -       +      +
     306  VAL*     3.8    16.4    -      -       +      -
     316  PHE*     3.5    28.7    -      -       -      +
     326  PRO*     3.8     8.7    -      -       +      -
     336  SER*     4.6     2.0    -      -       -      -
    1576  ASP*     5.2     5.3    -      -       +      +
    2106  ARG*     6.1     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 17 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     106  CYS*     4.1    23.8    -      -       -      -
     116  ASP      3.5    10.8    -      -       -      +
     126  ASN*     4.6     8.1    -      -       -      +
     136  GLY      4.6     0.4    -      -       -      +
     166  LEU*     1.3    74.2    -      -       -      +
     186  LYS*     1.3    69.8    +      -       -      +
     296  ALA      4.2     0.7    -      -       -      -
     306  VAL*     3.2    24.6    -      -       -      +
     316  PHE*     3.0    39.6    +      -       +      +
     336  SER*     4.0    13.7    -      -       -      +
     826  MET*     5.8     0.9    -      -       +      -
     856  ILE*     3.7    28.0    -      -       +      -
     866  TRP*     6.1     0.2    -      -       +      -
     896  THR*     4.5     7.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 18 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     106  CYS*     3.6     0.2    -      -       -      -
     116  ASP*     2.8    60.4    +      -       +      +
     136  GLY*     4.3     8.3    -      -       -      -
     166  LEU*     2.7    41.3    +      -       +      +
     176  VAL*     1.3    77.2    -      -       -      +
     196  ALA*     1.3    61.2    +      -       -      +
     276  PRO*     4.0     7.0    -      -       +      -
     296  ALA      3.3     4.9    -      -       -      -
     306  VAL*     4.2     7.4    -      -       +      -
    3366  LYS      5.1     4.0    -      -       -      +
    3376  TYR*     3.8    33.4    -      -       +      -
    3406  TRP*     3.4    21.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 19 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      96  VAL      3.2    11.4    -      -       -      +
     106  CYS*     4.6     5.6    -      -       +      -
     176  VAL*     4.7     3.8    -      -       +      -
     186  LYS*     1.3    75.7    -      -       -      +
     206  GLY*     1.3    52.0    +      -       -      +
     276  PRO*     3.2     3.8    -      -       -      +
     286  ARG      2.6    31.4    +      -       -      -
     296  ALA*     2.7    26.0    +      -       +      +
     316  PHE*     5.2     0.2    -      -       +      -
     896  THR*     3.6    30.7    -      -       +      -
     946  LEU*     4.0     6.7    -      -       +      -
    3406  TRP*     3.6     4.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 20 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      86  LEU*     3.6     7.1    -      -       -      +
      96  VAL      3.0    24.9    +      -       -      -
     196  ALA*     1.3    79.1    -      -       -      +
     216  PHE*     1.3    66.1    +      -       -      -
     286  ARG*     3.7    19.1    -      -       -      -
     946  LEU*     3.6    13.8    -      -       -      +
    3406  TRP*     3.6    10.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 21 (chain 6). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      56  THR      3.8    22.7    -      -       -      +
      76  ALA      3.5     2.0    -      -       -      -
      86  LEU*     3.5    28.3    -      -       +      -
     206  GLY*     1.3    72.7    -      -       -      -
     226  ALA*     1.3    67.2    +      -       -      +
     236  GLY      3.3     0.2    +      -       -      -
     246  ASP*     3.0    34.3    +      -       -      +
     286  ARG*     3.5    39.7    -      -       +      +
     946  LEU*     4.3    27.8    -      -       +      -
     966  VAL*     3.7    26.5    -      -       +      -
    1016  HIS*     4.6     7.0    -      +       -      -
    3406  TRP*     3.5     9.0    -      -       -      -
----------------------------------------------------------
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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