Contacts of the strand formed by residues 142 - 146 (chain B) in PDB entry 1LW0


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 ILE 142 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  VAL*     5.4    12.1    -      -       +      -
     49B  LYS*     4.4    15.7    -      -       +      -
    130B  PHE      4.2     0.2    -      -       -      +
    131B  THR*     3.4     3.1    -      -       -      +
    132B  ILE*     2.7    60.9    +      -       +      +
    133B  PRO      5.3     2.2    -      -       -      +
    134B  SER*     6.4     0.7    -      -       -      -
    139B  THR*     5.6     3.8    -      -       -      +
    141B  GLY*     1.3    73.7    -      -       -      +
    143B  ARG*     1.3    65.5    +      -       -      +
    144B  TYR*     3.2    42.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  TRP*     3.6    37.3    -      -       +      +
     49B  LYS*     3.1    13.8    -      -       -      +
     50B  ILE*     2.9    55.0    +      -       +      +
     51B  GLY      4.5     3.6    +      -       -      -
     54B  ASN*     2.7    31.1    +      -       -      +
     56B  TYR      3.0    19.8    +      -       -      -
     57B  ASN*     2.8    34.1    -      -       -      +
    129B  ALA*     4.4     1.4    -      -       -      +
    130B  PHE      3.7     4.2    +      -       -      -
    131B  THR*     2.7    27.1    +      -       +      -
    141B  GLY      3.4    15.7    +      -       -      +
    142B  ILE*     1.3    75.9    -      -       -      +
    144B  TYR*     1.3    66.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 144 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  VAL*     6.2     0.2    -      -       -      +
     38B  CYS*     3.7    28.1    -      -       +      +
     39B  THR*     4.3     6.2    +      -       -      +
     42B  GLU*     3.8    20.1    +      -       -      -
     47B  ILE*     3.7    22.4    -      -       +      -
     48B  SER      3.1     9.9    -      -       -      +
     49B  LYS*     3.4    43.1    +      -       +      -
     50B  ILE*     3.7     7.7    -      -       -      +
    129B  ALA*     3.1     4.0    -      -       -      -
    130B  PHE*     2.9    67.4    +      +       +      +
    132B  ILE*     3.9     8.1    -      -       +      +
    142B  ILE*     3.2    28.3    -      -       +      +
    143B  ARG*     1.3    75.8    -      -       -      +
    145B  GLN*     1.3    64.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 145 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  ILE*     3.3     5.3    -      -       -      -
     48B  SER*     2.8    35.8    +      -       -      +
     50B  ILE*     3.2    25.4    -      -       +      +
     54B  ASN*     3.6     5.2    +      -       -      -
    122B  GLU      5.3     0.4    +      -       -      -
    125B  ARG*     3.1    47.8    -      -       -      +
    126B  LYS*     3.5    16.6    -      -       -      +
    128B  THR*     3.7     7.6    -      -       -      +
    129B  ALA*     4.3     6.3    -      -       -      -
    130B  PHE*     4.9     0.4    -      -       -      -
    144B  TYR*     1.3    76.7    -      -       -      +
    146B  TYR*     1.3    62.6    +      -       -      +
    147B  ASN*     4.5     7.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 146 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  MET*     3.9    19.7    -      -       +      +
     46B  LYS      3.8     2.5    -      -       -      -
     47B  ILE*     4.0     8.5    -      -       +      -
     73B  LYS*     3.1    30.8    +      -       -      -
     75B  VAL*     3.7     9.3    -      -       +      +
     77B  PHE*     4.0     8.7    -      +       -      -
    116B  PHE*     4.2    10.3    -      +       -      -
    120B  LEU*     4.3     1.5    -      -       +      +
    125B  ARG*     3.4    27.0    -      -       -      +
    128B  THR*     2.8    32.2    +      -       +      +
    130B  PHE*     3.5    29.4    -      +       -      -
    145B  GLN*     1.3    74.7    -      -       -      +
    147B  ASN*     1.3    61.5    +      -       -      +
    148B  VAL*     3.6    23.8    -      -       +      +
    150B  PRO*     3.3    40.7    -      -       +      +
    151B  GLN*     4.8     5.5    +      -       -      +
----------------------------------------------------------
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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