Contacts of the helix formed by residues 297 - 311 (chain A) in PDB entry 3NO1


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 GLY 297 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  ALA*     3.3    13.4    -      -       -      +
    126A  ASN*     3.6     2.7    -      -       -      -
    127A  THR*     4.4     0.4    -      -       -      -
    292A  SER*     2.8    28.9    +      -       -      -
    295A  SER      3.6     0.6    -      -       -      -
    296A  GLY*     1.3    75.6    -      -       -      +
    298A  PRO*     1.3    76.8    -      -       -      +
    299A  THR      3.2     3.4    -      -       -      -
    300A  ALA*     3.0    13.3    +      -       -      +
    301A  TRP      3.0     9.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  ASN*     3.0    11.0    -      -       -      +
    127A  THR*     3.3    26.2    -      -       +      +
    130A  TRP*     3.7    12.6    -      -       +      +
    145A  TRP*     3.4    40.8    -      -       +      +
    292A  SER*     4.1     4.5    -      -       -      +
    297A  GLY*     1.3    82.9    -      -       -      +
    299A  THR*     1.3    55.7    +      -       -      +
    301A  TRP*     4.2     4.0    -      -       +      -
    302A  LEU*     2.8    38.3    +      -       -      +
    323A  VAL*     4.1    13.7    -      -       +      -
    327A  LEU*     4.0    11.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  ILE*     3.4    11.6    -      -       +      +
     98A  GLU*     4.4    16.4    -      -       -      +
    101A  TRP*     3.8    30.3    -      -       +      -
    126A  ASN*     2.9    30.7    +      -       -      +
    130A  TRP*     3.1    16.7    +      -       +      +
    298A  PRO*     1.3    77.3    -      -       -      +
    300A  ALA*     1.3    62.5    +      -       -      +
    302A  LEU*     3.7     7.1    +      -       -      +
    303A  ARG*     3.4    36.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  TRP*     4.1    19.7    -      -       +      +
    272A  SER*     6.3     0.4    -      -       -      -
    273A  ALA*     4.5     5.2    -      -       +      +
    290A  PHE*     3.9    10.5    -      -       +      -
    295A  SER      3.3    26.7    -      -       -      +
    296A  GLY      4.2     2.6    +      -       -      -
    297A  GLY      3.0     7.8    +      -       -      +
    299A  THR*     1.3    77.1    -      -       -      +
    301A  TRP*     1.3    66.6    +      -       -      +
    303A  ARG*     3.1    22.9    +      -       -      +
    304A  THR*     3.1    14.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  PHE*     2.9    50.7    +      +       +      -
    292A  SER*     3.7    20.9    -      -       -      -
    297A  GLY      3.0     5.5    +      -       -      -
    298A  PRO*     3.7     8.3    -      -       +      +
    300A  ALA*     1.3    78.4    -      -       -      +
    302A  LEU*     1.3    65.3    +      -       +      +
    304A  THR*     3.2     5.4    +      -       -      -
    305A  ALA*     2.9    36.5    +      -       +      -
    315A  MSE      3.4    39.4    -      -       +      +
    316A  GLY      3.5    13.2    +      -       -      -
    317A  HIS*     3.3    17.8    -      +       -      -
    327A  LEU*     3.7    51.4    -      -       +      -
    328A  LEU*     3.8    13.9    -      -       +      -
    331A  GLN*     3.9     9.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  TRP*     4.7     9.4    -      -       +      -
    145A  TRP*     3.5    46.2    -      -       +      +
    298A  PRO      2.8    25.9    +      -       -      +
    299A  THR*     4.1     4.9    -      -       -      +
    301A  TRP*     1.3    88.2    -      -       +      +
    303A  ARG*     1.3    65.4    +      -       +      +
    305A  ALA*     3.4     5.2    +      -       -      +
    306A  ALA*     3.1    21.3    +      -       -      +
    327A  LEU*     4.1     9.6    -      -       +      -
    330A  SER*     4.6     1.3    -      -       -      +
    331A  GLN*     4.0    24.9    -      -       -      +
    306B  ALA*     5.0     0.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  GLU*     3.0    29.9    +      -       -      +
    101A  TRP*     3.5    39.6    -      -       -      -
    273A  ALA*     4.5    11.4    -      -       +      -
    299A  THR*     3.4    22.3    +      -       +      +
    300A  ALA*     3.1    13.7    +      -       -      +
    302A  LEU*     1.3    74.6    -      -       -      +
    304A  THR*     1.3    67.7    +      -       -      +
    306A  ALA*     3.2     4.3    +      -       -      +
    307A  ILE*     3.0    27.9    +      -       -      +
    306B  ALA*     3.8    24.7    -      -       +      +
    309B  THR*     3.5    36.4    +      -       -      +
    331B  GLN*     5.9     0.2    +      -       -      -
    332B  PRO*     4.3    14.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273A  ALA*     3.3    25.0    -      -       -      +
    276A  CYS*     3.7    26.7    -      -       +      -
    280A  MSE      5.0     2.4    -      -       -      +
    288A  CYS*     3.8    18.8    -      -       -      -
    290A  PHE*     3.4    21.7    -      -       +      -
    300A  ALA      3.1     1.4    +      -       -      -
    301A  TRP      3.3     9.2    -      -       -      -
    303A  ARG*     1.3    79.8    -      -       -      +
    305A  ALA*     1.3    56.1    +      -       -      +
    307A  ILE*     3.1    14.2    +      -       +      +
    308A  ALA*     2.9    27.0    +      -       +      +
    315A  MSE      4.1    11.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301A  TRP*     2.9    32.9    +      -       +      +
    302A  LEU*     3.4    12.8    -      -       -      +
    304A  THR*     1.3    76.9    -      -       -      +
    306A  ALA*     1.3    61.0    +      -       -      +
    308A  ALA      3.1     8.5    +      -       -      -
    309A  THR*     3.1     3.1    +      -       -      +
    315A  MSE      3.9    11.9    -      -       +      -
    331A  GLN*     3.8    21.8    -      -       -      +
    333A  HIS*     2.8    30.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  LEU      3.1    11.6    +      -       -      +
    303A  ARG      3.5     8.3    -      -       -      +
    305A  ALA*     1.3    75.1    -      -       -      +
    307A  ILE*     1.3    62.5    +      -       -      +
    309A  THR*     2.7    29.4    +      -       -      -
    310A  SER      3.6     1.6    +      -       -      -
    331A  GLN*     5.1     1.3    +      -       -      -
    302B  LEU      4.9     0.2    -      -       -      +
    303B  ARG*     3.8    25.3    -      -       +      +
    306B  ALA*     3.5    23.6    -      -       +      -
    307B  ILE*     4.4     7.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273A  ALA*     4.1    23.3    -      -       +      +
    276A  CYS*     6.3     0.4    -      -       +      -
    277A  ARG*     4.4    12.3    -      -       +      -
    280A  MSE      3.9    10.5    -      -       -      -
    303A  ARG      3.0    15.8    +      -       -      +
    304A  THR*     3.4     8.7    -      -       +      +
    306A  ALA*     1.3    74.8    -      -       -      +
    308A  ALA*     1.3    64.1    +      -       -      +
    310A  SER*     2.8    23.9    +      -       -      +
    311A  TYR*     3.4    28.5    +      -       +      -
    306B  ALA      4.3     2.5    -      -       -      +
    307B  ILE*     3.8    33.7    -      -       +      +
    310B  SER*     3.6    31.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280A  MSE      2.9    21.3    -      -       +      +
    304A  THR      2.9    12.9    +      -       -      +
    305A  ALA      3.2    11.0    -      -       -      +
    307A  ILE*     1.3    77.0    -      -       -      +
    309A  THR*     1.3    62.6    +      -       -      +
    311A  TYR      3.0     2.6    +      -       -      -
    312A  ASP      3.0    17.8    +      -       -      -
    313A  VAL*     3.0    28.9    +      -       +      +
    315A  MSE      3.6    21.3    -      -       -      -
    333A  HIS*     3.7     2.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  ALA      3.1     6.1    +      -       -      +
    306A  ALA*     2.7    19.7    +      -       -      +
    308A  ALA*     1.3    75.6    -      -       -      +
    310A  SER*     1.3    62.5    +      -       -      +
    312A  ASP*     3.3    19.7    +      -       -      +
    313A  VAL      4.9     0.4    -      -       -      -
    331A  GLN*     5.2     1.3    -      -       -      +
    332A  PRO*     5.0     3.4    -      -       +      -
    333A  HIS*     3.3    37.7    -      -       +      +
    273B  ALA*     5.5     1.4    -      -       -      +
    303B  ARG*     3.6    43.2    +      -       -      +
    247D  HIS*     4.1     8.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  ALA      4.4     0.2    -      -       -      -
    307A  ILE*     2.8    17.2    +      -       -      -
    309A  THR*     1.3    81.1    +      -       -      +
    311A  TYR*     1.3    56.0    +      -       -      +
    312A  ASP      3.4     0.2    -      -       -      -
    273B  ALA*     4.2     5.6    -      -       -      -
    274B  SER*     2.9    38.3    +      -       -      +
    277B  ARG*     2.9    29.9    +      -       -      -
    307B  ILE*     3.6    24.5    -      -       -      +
    247D  HIS*     5.2     0.2    -      -       -      -
    248D  ASN*     3.2    17.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277A  ARG*     4.2     8.2    +      -       +      -
    280A  MSE      3.0    46.0    -      -       +      -
    281A  GLU*     2.6    52.4    +      -       -      +
    307A  ILE*     3.4    31.4    +      -       +      -
    308A  ALA      3.0     2.0    +      -       -      -
    310A  SER*     1.3    77.4    +      -       -      +
    312A  ASP*     1.3    71.8    +      -       -      +
    313A  VAL*     3.2     9.0    +      -       +      +
    277B  ARG*     3.0    31.3    -      -       +      +
    311B  TYR*     3.8    12.6    +      -       -      -
    248D  ASN*     3.6    12.0    +      -       -      +
    251D  ARG*     3.7    25.1    -      -       +      -
    252D  SER*     4.4     0.5    +      -       -      -
    255D  ASP*     5.8     0.2    -      -       -      +
----------------------------------------------------------
 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