Contacts of the strand formed by residues 41 - 43 (chain K) in PDB entry 1C9T


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 PHE 41 (chain K).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192E  GLN*     4.0    21.1    -      -       +      -
     32K  HIS*     3.3    37.2    -      +       +      +
     33K  CYS*     3.8    15.0    -      -       -      -
     35K  VAL*     3.8    21.8    -      -       +      -
     37K  CYS*     3.7    16.6    -      -       -      -
     40K  GLY*     1.3    74.4    -      -       -      -
     42K  LYS*     1.3    64.6    +      -       -      +
     43K  LYS*     3.5    11.6    +      -       -      +
     49K  GLU*     4.0    20.0    +      -       +      +
     50K  TYR      3.4    11.7    -      -       -      +
     51K  ALA      3.4    12.3    -      -       -      -
     52K  CYS*     3.9     3.8    -      -       -      -
     53K  ILE      3.0    29.6    -      -       -      +
     55K  ALA*     3.9     4.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 42 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41K  PHE*     1.3    71.8    -      -       -      +
     43K  LYS*     1.3    63.1    +      -       -      +
     49K  GLU*     3.2     1.2    -      -       -      -
     50K  TYR*     2.6    62.0    +      -       +      -
     53K  ILE*     2.7    38.3    +      -       +      +
     54K  CYS      3.2    26.7    +      -       -      -
     55K  ALA*     3.5    18.2    -      -       -      +
     56K  ASP*     4.5    12.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 43 (chain K). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41K  PHE      3.5     5.8    +      -       -      +
     42K  LYS*     1.3    79.4    -      -       -      +
     44K  ASP*     1.3    66.9    +      -       -      +
     47K  GLY*     3.6    20.3    +      -       -      +
     48K  CYS      3.0     8.3    -      -       -      +
     49K  GLU*     3.7    38.3    +      -       +      -
     50K  TYR*     4.1     3.8    -      -       -      -
     55K  ALA*     5.4     0.4    -      -       -      +
     59K  GLN*     3.2    31.0    +      -       +      +
----------------------------------------------------------
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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