Contacts of the strand formed by residues 152 - 156 (chain E) in PDB entry 1II4


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 ARG 152 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150E  ASN*     4.1    10.5    -      -       -      +
    151E  LYS*     1.3    75.5    -      -       -      +
    153E  ALA*     1.3    65.9    +      -       -      +
    155E  TYR*     3.5    55.8    +      -       -      +
    183E  GLY*     4.0     2.0    -      -       -      -
    184E  ASN*     2.8    31.7    +      -       +      +
    235E  ASN*     2.8    19.2    +      -       -      -
    237E  TYR*     3.8     9.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 153 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152E  ARG*     1.3    82.7    +      -       -      +
    154E  PRO*     1.3    79.3    -      -       +      +
    155E  TYR*     3.5    14.6    -      -       -      +
    183E  GLY*     3.9     1.3    -      -       -      -
    235E  ASN*     3.6     0.2    -      -       -      +
    237E  TYR*     3.0    38.8    -      -       +      +
    238E  GLY*     3.9     2.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 154 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153E  ALA*     1.3    93.3    -      -       +      +
    155E  TYR*     1.3    60.9    +      -       -      +
    182E  GLY      3.2     9.9    -      -       -      +
    187E  PRO*     3.8    20.9    -      -       +      -
    233E  VAL*     3.9    18.2    -      -       +      +
    234E  GLU*     3.8     9.6    -      -       -      -
    235E  ASN*     3.2    21.7    -      -       -      +
    238E  GLY      3.4    26.0    -      -       -      +
    239E  SER*     4.1     2.0    -      -       -      +
    240E  ILE*     3.4    23.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 155 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152E  ARG*     3.5    44.4    +      -       -      +
    153E  ALA      3.5    12.3    -      -       -      +
    154E  PRO*     1.3    75.7    -      -       -      +
    156E  TRP*     1.3    74.3    +      -       -      +
    157E  THR*     3.5    17.5    +      -       +      +
    181E  ALA*     3.2     4.2    -      -       -      +
    182E  GLY*     3.0    59.4    +      -       -      -
    183E  GLY*     3.1     8.7    +      -       -      -
    240E  ILE*     3.7     9.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 156 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155E  TYR*     1.3    83.0    -      -       -      +
    157E  THR*     1.3    61.9    +      -       -      +
    158E  ASN      4.6     0.7    -      -       -      +
    159E  THR*     3.7    29.7    -      -       +      +
    162E  MET*     3.6    30.3    -      -       +      +
    179E  CYS*     3.3    24.0    -      -       +      -
    180E  PRO      3.3    17.0    -      -       -      +
    181E  ALA*     4.1     6.3    -      -       +      -
    231E  CYS*     3.6    15.9    -      -       -      -
    233E  VAL*     3.4    30.7    -      -       +      -
    240E  ILE*     3.6    29.7    -      -       +      +
    241E  ASN      3.9    27.3    +      -       -      -
    242E  HIS*     4.0     2.0    +      -       +      +
----------------------------------------------------------
 Back to top of page


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