Contacts of the strand formed by residues 29 - 33 (chain C) in PDB entry 1XWD


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 VAL 29 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  HIS      3.9     0.3    -      -       -      +
     26C  SER*     3.2    31.9    +      -       -      +
     27C  ASN      3.0    10.4    -      -       -      +
     28C  ARG*     1.3    79.9    -      -       -      +
     30C  PHE*     1.3    63.4    +      -       -      +
     31C  LEU*     4.0     3.0    +      -       +      +
     49C  ILE*     5.2     5.6    -      -       +      -
     50C  GLU*     3.5    30.7    -      -       +      +
     52C  ARG*     3.9    30.5    -      -       -      +
    401C  SO4      4.5     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 30 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  CYS*     5.8     2.9    -      -       +      -
     24C  HIS      3.5     5.4    -      -       -      +
     25C  CYS*     3.7    26.2    -      -       +      -
     26C  SER      4.0    11.0    -      -       -      -
     28C  ARG*     4.0    14.6    -      -       -      -
     29C  VAL*     1.3    79.2    -      -       -      +
     31C  LEU*     1.3    56.9    +      -       -      +
     32C  CYS*     4.2     2.2    -      -       -      -
     44C  LEU*     4.4    16.6    -      -       +      -
     45C  PRO*     3.3    61.2    -      -       +      -
     47C  ASN*     5.2     2.0    -      -       -      -
     48C  ALA*     3.5    14.4    -      -       +      -
     50C  GLU      2.8    13.7    +      -       -      +
     51C  LEU*     3.5    26.4    -      -       +      -
     52C  ARG*     2.7    36.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 31 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  CYS*     3.6     1.1    -      -       -      +
     24C  HIS*     3.2    56.6    +      -       +      +
     29C  VAL*     4.0     3.5    +      -       +      +
     30C  PHE*     1.3    74.5    -      -       -      +
     32C  CYS*     1.3    67.5    +      -       -      +
     33C  GLN*     3.4    41.5    -      -       +      +
     52C  ARG*     3.4    27.6    -      -       +      +
     54C  VAL*     4.2     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 32 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22C  ILE      4.2     2.2    -      -       -      -
     23C  CYS*     2.1    46.7    -      -       -      -
     30C  PHE*     5.7     2.7    -      -       -      -
     31C  LEU*     1.3    74.1    -      -       -      +
     33C  GLN*     1.3    58.8    +      -       -      +
     35C  SER*     4.1    13.0    -      -       -      +
     37C  VAL*     5.4     1.3    -      -       +      -
     41C  PRO*     4.7     4.7    -      -       -      -
     44C  LEU*     4.7     7.9    -      -       -      -
     52C  ARG      2.8     9.4    +      -       -      -
     53C  PHE*     3.5    35.9    -      -       +      -
     54C  VAL      2.9    27.5    +      -       -      +
     56C  THR*     3.5     5.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 33 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99B  LEU*     3.8    23.0    +      -       -      +
    103B  TYR*     4.7    12.5    -      -       -      -
     22C  ILE      4.2     9.5    +      -       -      +
     24C  HIS*     5.2     8.2    +      -       -      +
     31C  LEU*     3.4    38.3    +      -       +      +
     32C  CYS*     1.3    73.7    -      -       -      +
     34C  GLU*     1.3    88.7    +      -       +      +
     35C  SER*     3.3     3.5    +      -       -      -
     54C  VAL*     3.2    24.4    -      -       +      +
     55C  LEU*     4.4     2.2    -      -       +      +
----------------------------------------------------------
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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