Contacts of the helix formed by residues 307 - 324 (chain C) in PDB entry 1KYZ


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 SER 307 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  THR*     6.0     0.7    -      -       -      -
    305C  ASP*     2.5    23.0    +      -       -      -
    306C  SER*     1.3    82.1    +      -       -      +
    308C  LEU*     1.3    63.3    +      -       -      +
    309C  ALA*     3.7     8.2    +      -       -      +
    310C  THR*     3.1    18.7    +      -       -      -
    311C  LYS*     3.1    22.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 308 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306C  SER      3.8     0.4    +      -       -      -
    307C  SER*     1.3    73.5    -      -       -      +
    309C  ALA*     1.3    56.6    +      -       -      +
    311C  LYS*     3.4    15.6    +      -       +      +
    312C  GLY*     2.8    27.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 309 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307C  SER*     3.2     8.4    -      -       -      +
    308C  LEU*     1.3    79.1    -      -       -      +
    310C  THR*     1.3    62.9    +      -       -      +
    312C  GLY      3.2     3.8    +      -       -      -
    313C  VAL*     3.3     4.5    +      -       -      +
    352C  ASN*     6.2     2.0    -      -       -      +
    355C  ASN*     2.7    46.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 310 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301C  PRO*     3.6    26.4    -      -       +      +
    304C  PRO*     4.7     3.4    -      -       +      -
    305C  ASP*     2.4    60.0    +      -       -      +
    307C  SER*     3.1     5.4    +      -       -      -
    309C  ALA*     1.3    78.9    -      -       -      +
    311C  LYS*     1.3    58.5    +      -       -      +
    313C  VAL*     2.7    28.5    -      -       -      +
    314C  VAL*     2.9    21.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 311 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10C  THR*     4.5    24.5    +      -       -      +
     11C  PRO      5.2     2.2    +      -       -      -
     12C  THR*     5.2     4.2    -      -       -      +
    305C  ASP      4.6     5.2    -      -       -      +
    306C  SER*     3.2    39.7    +      -       -      +
    307C  SER      3.1    16.1    +      -       -      +
    308C  LEU*     3.7    17.2    -      -       +      +
    310C  THR*     1.3    76.7    -      -       -      +
    312C  GLY*     1.3    56.4    +      -       -      +
    314C  VAL*     4.5     5.4    -      -       -      +
    315C  HIS*     2.8    52.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 312 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298C  CYS*     5.6     1.3    -      -       -      -
    308C  LEU      2.8    17.8    +      -       -      -
    309C  ALA      3.7     2.9    -      -       -      -
    310C  THR      3.2     0.6    -      -       -      -
    311C  LYS*     1.3    79.7    -      -       -      +
    313C  VAL*     1.3    60.2    +      -       -      +
    315C  HIS*     3.6     7.5    +      -       -      +
    316C  ILE*     3.3    23.7    +      -       -      +
    355C  ASN*     3.8     8.5    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 313 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298C  CYS*     3.7    29.8    -      -       +      -
    299C  ILE      4.0    12.6    -      -       -      +
    300C  LEU*     3.6    28.7    -      -       +      -
    301C  PRO*     4.0    11.9    -      -       +      -
    309C  ALA      3.3     9.2    +      -       -      +
    310C  THR*     2.7    32.1    -      -       -      +
    312C  GLY*     1.3    74.6    -      -       -      +
    314C  VAL*     1.3    70.1    +      -       +      +
    315C  HIS      3.1     0.2    -      -       -      -
    316C  ILE*     3.1     9.9    +      -       -      +
    317C  ASP*     3.1    18.7    +      -       -      +
    329C  GLU*     3.8    13.6    -      -       +      +
    355C  ASN*     3.6     5.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 314 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300C  LEU*     4.1    13.0    -      -       +      -
    301C  PRO*     5.4     0.9    -      -       +      -
    304C  PRO*     6.2     2.7    -      -       +      -
    310C  THR*     2.9    36.0    +      -       +      +
    311C  LYS*     4.1     6.3    -      -       -      +
    313C  VAL*     1.3    82.8    -      -       +      +
    315C  HIS*     1.3    66.5    +      -       +      +
    317C  ASP*     3.2    10.5    +      -       +      +
    318C  VAL*     3.1    33.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 315 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311C  LYS*     2.8    44.8    +      -       +      +
    312C  GLY*     3.6     7.6    -      -       -      +
    313C  VAL      3.1     0.2    -      -       -      -
    314C  VAL*     1.3    79.6    -      -       +      +
    316C  ILE*     1.3    66.0    +      -       +      +
    318C  VAL*     3.0    26.3    -      -       +      +
    319C  ILE*     3.1    19.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 316 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127C  LEU*     6.4     1.3    -      -       +      -
    183C  HIS*     5.6    10.5    -      -       +      -
    269C  HIS*     4.4    14.4    -      -       +      -
    298C  CYS*     5.4     8.5    -      -       -      -
    312C  GLY      3.3    17.0    -      -       -      +
    313C  VAL*     3.1     8.9    +      -       -      +
    315C  HIS*     1.3    79.8    -      -       +      +
    317C  ASP*     1.3    58.7    +      -       -      +
    319C  ILE*     3.1    13.2    +      -       +      +
    320C  MET*     2.8    37.2    +      -       -      +
    329C  GLU*     3.9    22.2    -      -       -      +
    366C  FER      3.8    25.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 317 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300C  LEU*     4.6     9.8    -      -       +      +
    313C  VAL      3.1     8.5    +      -       -      +
    314C  VAL*     3.5    14.6    -      -       +      +
    316C  ILE*     1.3    77.1    -      -       -      +
    318C  VAL*     1.3    64.0    +      -       +      +
    320C  MET*     3.3     7.7    -      -       -      +
    321C  LEU*     3.0    23.9    +      -       -      +
    328C  LYS*     3.7    10.7    -      -       -      +
    329C  GLU*     3.0    46.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 318 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140C  TRP*     3.7    19.5    -      -       +      -
    314C  VAL*     3.1    24.0    +      -       +      +
    315C  HIS*     3.0    24.5    -      -       +      +
    317C  ASP*     1.3    79.5    -      -       -      +
    319C  ILE*     1.3    67.7    +      -       +      +
    320C  MET      3.1     1.6    -      -       -      -
    321C  LEU*     3.0    20.8    +      -       +      +
    322C  ALA*     2.9    21.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 319 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  ASN*     3.5    30.3    -      -       +      +
    140C  TRP*     4.3    18.8    -      -       +      -
    315C  HIS*     3.1    27.0    +      -       +      +
    316C  ILE*     3.1    18.3    +      -       +      +
    318C  VAL*     1.3    78.5    -      -       +      +
    320C  MET*     1.3    64.5    +      -       +      +
    322C  ALA*     3.1     2.8    +      -       -      +
    323C  HIS*     3.0    42.9    +      -       +      +
    366C  FER      4.0    32.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 320 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269C  HIS*     3.9    20.2    -      -       -      +
    270C  ASP*     4.8     6.5    -      -       -      +
    316C  ILE*     2.8    20.3    +      -       -      +
    317C  ASP*     3.3    13.9    -      -       -      +
    319C  ILE*     1.3    81.3    -      -       +      +
    321C  LEU*     1.3    57.7    +      -       -      +
    323C  HIS*     4.8     1.1    -      -       +      -
    324C  ASN*     2.4    82.3    +      -       +      +
    327C  GLY*     3.5    19.1    -      -       -      +
    328C  LYS*     3.8     4.3    -      -       -      +
    329C  GLU*     4.8     5.8    -      -       -      +
    366C  FER      3.4    43.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 321 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140C  TRP*     6.1     0.4    -      -       +      -
    143C  LEU*     4.2    31.9    -      -       +      -
    152C  ILE*     4.5     2.9    -      -       -      +
    153C  PRO*     3.4    17.2    -      -       +      +
    317C  ASP*     3.0    14.9    +      -       -      +
    318C  VAL*     3.0    24.7    +      -       +      +
    320C  MET*     1.3    76.8    -      -       -      +
    322C  ALA*     1.3    58.6    +      -       +      +
    324C  ASN*     3.4     6.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 322 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139C  SER*     3.9     7.6    -      -       -      -
    140C  TRP*     3.8    26.9    -      -       +      -
    143C  LEU*     5.7     1.1    -      -       +      -
    152C  ILE*     3.8     0.6    -      -       -      +
    153C  PRO*     3.3    15.9    -      -       +      +
    154C  PHE      3.0    26.5    +      -       -      -
    318C  VAL      2.9    11.7    +      -       -      +
    319C  ILE      3.1     8.5    +      -       -      +
    321C  LEU*     1.3    80.0    -      -       -      +
    323C  HIS*     1.3    76.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 323 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  ASN*     5.7     0.6    +      -       -      -
    136C  LEU*     3.2    56.1    +      -       +      +
    139C  SER*     2.8    35.7    +      -       -      -
    140C  TRP*     5.0     8.4    +      -       -      -
    152C  ILE*     4.1     5.5    -      -       -      +
    154C  PHE*     3.8    18.3    -      -       +      +
    155C  ASN*     4.9     2.3    +      -       -      -
    162C  ALA*     4.1    18.2    +      -       +      +
    319C  ILE*     3.0    35.2    +      -       +      +
    320C  MET*     4.8     2.0    -      -       +      -
    322C  ALA*     1.3    85.7    -      -       +      +
    324C  ASN*     1.3    65.5    +      -       -      +
    325C  PRO*     4.1     1.4    -      -       -      +
    366C  FER      4.9    19.0    +      +       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 324 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152C  ILE*     3.2    22.5    -      -       -      +
    270C  ASP*     4.9     1.6    -      -       -      +
    320C  MET*     2.4    73.4    +      -       +      +
    321C  LEU*     3.4     6.5    -      -       -      +
    323C  HIS*     1.3    72.8    -      -       -      +
    325C  PRO*     1.3    72.5    -      -       +      +
    326C  GLY*     2.6     7.6    +      -       -      -
    327C  GLY*     2.4    49.0    +      -       -      +
    366C  FER      5.8     1.8    -      -       -      -
----------------------------------------------------------
 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