Contacts of the helix formed by residues 337 - 349 (chain A) in PDB entry 4UIS


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 TYR 337 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  ASN*     3.2    33.8    +      -       +      +
    144A  GLY      4.2     0.9    -      -       -      -
    145A  PHE*     3.8    28.5    -      +       +      -
    330A  PHE*     5.6     0.2    -      -       -      +
    333A  GLU*     3.0    41.3    -      -       +      +
    336A  ASP*     1.3    90.5    -      -       -      +
    338A  ILE*     1.3    72.1    +      -       -      +
    340A  SER*     2.2    38.6    +      -       -      +
    341A  SER*     4.5     1.8    -      -       -      +
    424A  PRO*     4.2     7.8    -      -       -      +
    425A  SER      3.3    22.9    -      -       -      -
    426A  SER*     4.3     6.5    -      -       -      -
    428A  GLN*     2.9    22.0    +      -       +      -
    429A  ARG*     4.0    35.6    -      -       +      +
    646A  SER*     4.4     1.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 338 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  LEU*     4.0    15.3    -      -       +      +
    252A  SER*     5.1     1.6    -      -       -      -
    253A  ASP*     5.7     3.6    -      -       -      +
    330A  PHE*     5.2     1.3    -      -       +      +
    331A  GLN      3.0    24.5    -      -       -      +
    332A  GLY*     3.2    30.1    -      -       -      +
    333A  GLU*     3.5     3.8    -      -       -      +
    335A  PHE*     5.9     1.1    -      -       +      -
    336A  ASP*     3.6    13.9    -      -       +      +
    337A  TYR*     1.3    82.8    -      -       -      +
    339A  GLY*     1.3    78.0    +      -       -      +
    340A  SER      4.7     0.2    -      -       -      +
    341A  SER*     2.6    32.1    +      -       -      -
    342A  ARG*     3.3     2.4    +      -       -      +
    555A  ILE*     6.5     0.7    -      -       +      -
    631A  ALA*     4.2     9.0    -      -       +      +
    633A  ALA*     3.6    42.7    -      -       +      +
    646A  SER*     4.8     1.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255A  ASN*     3.5    31.0    -      -       -      +
    331A  GLN      4.1     0.6    +      -       -      -
    338A  ILE*     1.3    87.9    -      -       -      +
    340A  SER*     1.3    56.2    +      -       -      +
    342A  ARG*     2.9    12.8    +      -       -      +
    343A  MET*     2.8    27.7    +      -       -      +
    631A  ALA*     4.0    13.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330A  PHE*     3.5    29.6    -      -       -      +
    333A  GLU*     5.9     0.4    -      -       -      -
    337A  TYR*     2.2    38.8    +      -       -      +
    339A  GLY*     1.3    75.6    -      -       -      +
    341A  SER*     1.3    62.4    +      -       -      +
    343A  MET*     2.9     7.4    +      -       -      +
    344A  VAL*     2.9    29.5    +      -       -      +
    426A  SER*     3.2    29.4    +      -       -      -
    429A  ARG*     4.5     5.8    -      -       -      +
    430A  PHE*     4.4     4.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 341 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  TYR      4.8     2.5    -      -       -      -
    338A  ILE*     2.6    23.0    +      -       -      -
    340A  SER*     1.3    80.4    +      -       -      +
    342A  ARG*     1.3    61.0    +      -       -      +
    344A  VAL*     2.9    15.6    +      -       -      +
    345A  TYR*     2.7    29.4    +      -       -      +
    429A  ARG*     3.7    28.7    -      -       -      -
    634A  LEU*     4.7    14.7    +      -       -      +
    645A  TYR*     4.9    20.6    +      -       -      -
    646A  SER*     5.4     0.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 342 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338A  ILE      3.3     1.7    +      -       -      +
    339A  GLY*     2.9    17.6    +      -       -      +
    341A  SER*     1.3    83.4    +      -       -      +
    343A  MET*     1.3    56.7    -      -       +      +
    345A  TYR*     2.9    24.0    +      -       -      +
    346A  ASP*     2.7    38.5    +      -       -      +
    630A  LEU*     3.6    41.5    -      -       +      +
    631A  ALA*     4.3     0.7    -      -       -      -
    632A  ARG*     3.1    36.5    +      -       -      +
    633A  ALA      3.1    10.9    +      -       -      -
    634A  LEU*     3.0    41.3    -      -       -      +
    635A  SER      4.2     1.8    -      -       -      +
    636A  PRO*     4.5     5.9    -      -       -      +
    637A  ALA      5.8     0.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 343 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255A  ASN*     4.0    14.4    -      -       +      +
    256A  VAL      5.2     0.4    -      -       -      +
    257A  TRP*     3.6    14.6    -      -       +      -
    326A  MET*     3.5    30.3    -      -       +      -
    328A  VAL*     4.0     6.5    -      -       +      -
    330A  PHE*     3.4    34.3    -      -       +      -
    339A  GLY      2.8    16.5    +      -       -      +
    340A  SER*     2.9     7.8    +      -       -      +
    342A  ARG*     1.3    73.9    -      -       +      +
    344A  VAL*     1.3    68.6    +      -       -      +
    346A  ASP*     2.9    24.2    +      -       +      +
    347A  MET*     3.1    23.8    +      -       +      +
    354A  VAL*     3.6    20.2    -      -       +      -
    430A  PHE*     5.4     2.9    -      -       +      -
    629A  ARG*     5.7     7.6    -      -       +      -
    630A  LEU      5.5     2.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 344 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    340A  SER      2.9    20.1    +      -       -      +
    341A  SER*     2.9    16.6    +      -       -      +
    343A  MET*     1.3    73.9    -      -       -      +
    345A  TYR*     1.3    53.4    +      -       -      +
    347A  MET*     2.9    18.4    +      -       +      +
    348A  GLU*     2.5    43.6    +      -       +      +
    356A  LEU*     6.0     3.6    -      -       +      -
    429A  ARG*     4.0    15.0    -      -       +      -
    430A  PHE*     3.4    27.6    -      -       +      -
    433A  ALA*     4.0    21.5    -      -       +      -
    645A  TYR*     6.6     0.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 345 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  SER      2.7    12.1    +      -       -      +
    342A  ARG*     3.2    28.9    -      -       -      +
    344A  VAL*     1.3    77.7    -      -       -      +
    346A  ASP*     1.3    67.6    +      -       -      +
    348A  GLU*     3.6    17.9    -      -       +      -
    349A  LYS*     2.9    65.4    +      -       +      +
    351A  LYS*     6.1     4.0    -      -       +      -
    634A  LEU*     3.4    32.3    -      -       +      -
    637A  ALA*     5.1    14.5    -      -       -      -
    645A  TYR*     5.3     7.2    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 346 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  ARG*     2.7    33.9    +      -       -      +
    343A  MET*     2.9    22.0    +      -       +      +
    345A  TYR*     1.3    80.7    -      -       -      +
    347A  MET*     1.3    55.6    +      -       -      +
    350A  GLY      3.0     1.2    +      -       -      -
    351A  LYS*     2.4    44.4    +      -       -      +
    352A  PHE*     3.2    28.2    +      -       +      +
    354A  VAL*     5.1     5.8    -      -       +      +
    629A  ARG*     5.7     4.5    +      -       -      +
    630A  LEU*     4.8    14.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 347 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326A  MET*     6.1     0.2    -      -       +      -
    343A  MET*     3.1    30.0    +      -       +      +
    344A  VAL*     2.9    17.9    +      -       +      +
    346A  ASP*     1.3    75.1    -      -       -      +
    348A  GLU*     1.3    64.4    +      -       -      +
    350A  GLY*     2.9    21.2    +      -       -      +
    352A  PHE      5.0     0.2    -      -       -      -
    354A  VAL*     3.1    52.7    -      -       +      +
    355A  GLN*     4.0     1.3    -      -       -      +
    356A  LEU*     3.4    56.4    +      -       +      +
    359A  VAL*     5.8     3.8    -      -       +      -
    430A  PHE*     4.7    15.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 348 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    344A  VAL*     2.5    30.5    +      -       +      +
    345A  TYR*     3.0    23.2    +      -       +      +
    347A  MET*     1.3    75.3    -      -       -      +
    349A  LYS*     1.3    79.3    +      -       -      +
    356A  LEU*     5.5     7.0    -      -       +      -
    645A  TYR*     5.8     5.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 349 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345A  TYR*     2.9    54.3    +      -       +      +
    347A  MET      3.8     0.2    -      -       -      -
    348A  GLU*     1.3    90.4    +      -       -      +
    350A  GLY*     1.3    62.7    +      -       -      +
    351A  LYS*     3.3    11.4    +      -       +      +
----------------------------------------------------------
 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