Contacts of the helix formed by residues 41 - 66 (chain P) in PDB entry 1OCR


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 THR 41 (chain P).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39P  SER*     3.4    14.6    +      -       -      -
     40P  MET*     1.3    76.1    +      -       -      +
     42P  LEU*     1.3    65.1    +      -       -      +
     44P  MET*     3.1     7.3    +      -       +      +
     45P  ILE*     2.8    43.6    +      -       +      +
     45W  TYR*     4.3    18.9    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 42 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  LEU*     3.8    19.8    -      -       +      +
     29P  SER*     3.8    11.9    -      -       -      +
     30P  GLY*     3.6    10.8    -      -       -      +
     33P  MET*     4.1    26.9    -      -       +      +
     39P  SER*     4.9     2.4    +      -       -      -
     40P  MET      3.4     0.2    -      -       -      -
     41P  THR*     1.3    75.7    -      -       -      +
     43P  LEU*     1.3    64.9    +      -       -      +
     45P  ILE*     3.0    12.4    +      -       +      +
     46P  GLY*     2.8    21.5    +      -       -      -
     42W  GLY*     3.8    19.7    -      -       -      +
     45W  TYR*     3.5    26.8    -      -       +      -
     46W  SER*     3.5    30.3    -      -       -      +
     49W  CYS*     4.6     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 43 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  LEU      4.2     2.7    -      -       -      -
     27P  MET*     3.9    25.8    -      -       +      +
     30P  GLY*     3.3    23.8    +      -       -      +
     31P  LEU*     4.1    25.8    -      -       +      -
     34P  TRP*     4.7    10.8    -      -       +      -
     40P  MET*     3.2    27.4    +      -       +      +
     42P  LEU*     1.3    78.7    -      -       -      +
     44P  MET*     1.3    64.5    +      -       +      +
     46P  GLY*     3.3     0.9    +      -       -      -
     47P  LEU*     2.9    46.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 44 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40P  MET*     2.8    42.6    +      -       +      +
     41P  THR*     3.3     7.4    -      -       +      +
     43P  LEU*     1.3    84.6    -      -       +      +
     45P  ILE*     1.3    67.4    +      -       +      +
     47P  LEU*     3.4    26.7    +      -       +      +
     48P  THR*     2.9    26.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 45 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26P  LEU*     3.8    20.4    -      -       +      -
     41P  THR*     2.8    36.4    +      -       +      +
     42P  LEU*     3.5    18.4    -      -       +      +
     44P  MET*     1.3    75.2    -      -       +      +
     46P  GLY*     1.3    64.6    +      -       -      +
     48P  THR*     3.0     8.9    +      -       -      -
     49P  THR*     3.0    26.0    +      -       +      +
     38W  LEU*     4.2    25.1    -      -       +      +
     42W  GLY*     4.3    11.0    -      -       -      -
     45W  TYR*     4.5     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 46 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23P  SER*     4.4     1.1    -      -       -      -
     26P  LEU*     3.4    27.5    -      -       -      +
     27P  MET*     3.7    15.2    -      -       -      +
     42P  LEU      2.8    12.0    +      -       -      -
     43P  LEU      3.6     3.8    -      -       -      -
     45P  ILE*     1.3    77.4    -      -       -      +
     47P  LEU*     1.3    61.9    +      -       -      +
     49P  THR*     3.0    17.8    +      -       -      -
     50P  ASN*     3.0    12.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 47 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27P  MET*     4.0    16.5    -      -       -      +
     43P  LEU*     2.9    38.7    +      -       +      +
     44P  MET*     3.8    30.1    -      -       +      +
     45P  ILE      3.3     0.2    -      -       -      -
     46P  GLY*     1.3    72.7    -      -       -      +
     48P  THR*     1.3    62.6    +      -       -      +
     50P  ASN*     3.4     7.7    +      -       +      +
     51P  MET*     3.1    40.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 48 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44P  MET*     2.9    14.9    +      -       -      +
     45P  ILE*     3.0    11.4    +      -       -      -
     47P  LEU*     1.3    73.3    -      -       -      +
     49P  THR*     1.3    66.6    +      -       -      +
     50P  ASN      3.1     0.3    +      -       -      -
     51P  MET*     3.1     9.1    +      -       -      +
     52P  LEU*     3.0    30.5    +      -       +      +
     38W  LEU*     4.2    22.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 49 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19P  THR*     4.4     0.7    -      -       -      +
     23P  SER*     3.1    15.6    +      -       -      -
     26P  LEU*     3.7    15.7    -      -       +      +
     45P  ILE*     3.0    12.3    +      -       +      +
     46P  GLY      3.0    14.6    +      -       -      -
     48P  THR*     1.3    75.0    -      -       -      +
     50P  ASN*     1.3    52.8    +      -       -      +
     52P  LEU*     3.5     9.7    -      -       +      +
     53P  THR*     2.7    37.4    +      -       -      -
     35W  THR*     4.5     2.2    -      -       -      +
     38W  LEU*     3.5    37.0    -      -       +      -
     39W  CYS*     3.7    26.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 50 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20P  GLY*     5.2     2.4    -      -       -      +
     23P  SER*     3.6    17.1    -      -       -      -
     27P  MET*     3.4    31.4    -      -       -      +
     46P  GLY      3.0    12.8    +      -       -      +
     47P  LEU*     3.4    13.1    +      -       +      +
     49P  THR*     1.3    74.8    +      -       -      +
     51P  MET*     1.3    63.8    +      -       -      +
     53P  THR*     3.2     4.9    +      -       -      -
     54P  MET*     2.9    59.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 51 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47P  LEU*     3.1    29.2    -      -       +      +
     48P  THR*     3.1     6.8    +      -       -      +
     50P  ASN*     1.3    80.1    -      -       -      +
     52P  LEU*     1.3    58.7    +      -       +      +
     54P  MET*     3.3    23.6    +      -       -      +
     55P  TYR*     2.8    32.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 52 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48P  THR*     3.0    25.1    +      -       +      +
     49P  THR*     3.5    12.1    -      -       -      +
     51P  MET*     1.3    79.0    -      -       +      +
     53P  THR*     1.3    62.7    +      -       -      +
     55P  TYR*     3.4     7.4    +      -       +      +
     56P  GLN*     2.8    34.1    +      -       -      +
     31W  LEU*     4.1    25.4    -      -       +      -
     34W  VAL*     4.6     7.2    -      -       +      -
     35W  THR*     3.7    29.2    -      -       +      +
     38W  LEU*     4.1    26.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 53 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16P  TRP*     3.5    36.4    -      -       +      +
     19P  THR*     2.7    25.7    -      -       +      +
     20P  GLY*     3.7    14.6    -      -       -      +
     23P  SER*     3.7     3.3    +      -       -      -
     49P  THR      2.7    22.0    +      -       -      -
     50P  ASN*     3.5     7.4    -      -       -      -
     52P  LEU*     1.3    74.7    -      -       -      +
     54P  MET*     1.3    61.8    +      -       +      +
     56P  GLN*     3.3     5.5    +      -       -      +
     57P  TRP*     2.8    43.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 54 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50P  ASN*     2.9    43.2    +      -       -      +
     51P  MET*     3.9    23.8    -      -       -      +
     53P  THR*     1.3    76.8    -      -       +      +
     55P  TYR*     1.3    63.4    +      -       -      +
     57P  TRP*     4.5     4.5    -      -       -      -
     58P  TRP*     3.1    66.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 55 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51P  MET      2.8    19.4    +      -       -      +
     52P  LEU*     3.7     8.5    -      -       +      +
     54P  MET*     1.3    78.2    -      -       -      +
     56P  GLN*     1.3    71.4    +      -       +      +
     58P  TRP*     3.8     2.7    -      -       -      +
     59P  ARG*     2.9    52.0    +      -       +      +
     31W  LEU*     3.9    28.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 56 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16P  TRP*     3.0    46.6    -      -       +      -
     52P  LEU*     2.8    31.4    +      -       -      +
     53P  THR      4.1     1.1    -      -       -      +
     55P  TYR*     1.3    86.5    -      -       +      +
     57P  TRP*     1.3    66.3    +      -       -      +
     59P  ARG*     3.5    22.3    +      -       -      +
     60P  ASP*     3.0    31.4    +      -       -      +
     28W  ASP      4.5     0.7    -      -       -      +
     31W  LEU*     3.3    27.1    -      -       +      +
     32W  TYR      3.6     4.3    +      -       -      -
     35W  THR*     3.0    24.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 57 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96N  ARG*     3.4    28.2    -      -       +      +
     97N  MET*     3.8    40.8    -      -       +      -
    100N  MET*     3.8    35.7    -      -       +      -
     16P  TRP*     3.7    33.3    -      +       +      -
     17P  PRO*     3.9    23.1    -      -       +      -
     53P  THR*     2.8    31.2    +      -       +      +
     54P  MET*     4.0     4.9    -      -       -      +
     56P  GLN*     1.3    74.5    -      -       -      +
     58P  TRP*     1.3    75.7    +      +       +      +
     60P  ASP*     3.2     4.2    +      -       -      +
     61P  VAL*     3.1    29.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 58 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54P  MET*     3.1    64.7    +      -       +      +
     55P  TYR*     4.2     2.0    -      -       -      +
     57P  TRP*     1.3    89.0    -      +       +      +
     59P  ARG*     1.3    64.8    +      -       -      +
     61P  VAL*     3.3    18.8    +      -       +      +
     62P  ILE*     3.1    31.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 59 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16P  TRP*     4.1    11.3    -      -       -      -
     55P  TYR*     2.9    44.9    +      -       +      +
     56P  GLN*     3.5    22.4    +      -       -      +
     58P  TRP*     1.3    75.1    -      -       -      +
     60P  ASP*     1.3    88.6    +      -       -      +
     62P  ILE*     3.1    13.4    +      -       -      +
     63P  ARG*     3.0    52.1    +      -       +      +
     21W  HIS*     3.2    29.7    +      -       -      +
     28W  ASP*     3.5    22.8    +      -       -      +
     31W  LEU*     4.1    15.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 60 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96N  ARG*     4.0    17.2    +      -       -      +
     14P  SER*     5.0     1.0    +      -       -      -
     16P  TRP*     2.8    29.6    +      -       -      -
     56P  GLN      3.0     8.6    +      -       -      -
     57P  TRP*     3.5     8.1    -      -       -      +
     59P  ARG*     1.3   104.2    +      -       -      +
     61P  VAL*     1.3    53.4    +      -       -      +
     63P  ARG*     2.9    12.8    +      -       -      +
     64P  GLU*     2.7    39.6    +      -       -      +
     20W  VAL*     4.1    12.2    -      -       +      +
     21W  HIS*     3.3    19.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 61 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96N  ARG*     3.6    21.3    -      -       -      +
     57P  TRP*     3.1    26.7    +      -       +      +
     58P  TRP*     3.7    20.9    -      -       +      +
     59P  ARG      3.3     0.2    -      -       -      -
     60P  ASP*     1.3    74.3    -      -       -      +
     62P  ILE*     1.3    55.1    +      -       +      +
     64P  GLU*     3.4     9.3    +      -       -      +
     65P  SER*     2.7    33.4    +      -       -      +
     71P  HIS*     4.1    20.5    -      -       +      +
     79P  LEU*     5.9     3.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 62 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58P  TRP*     3.1    17.1    +      -       +      +
     59P  ARG*     3.1    11.6    +      -       -      +
     60P  ASP      3.1     0.6    -      -       -      -
     61P  VAL*     1.3    76.8    -      -       +      +
     63P  ARG*     1.3    60.7    +      -       +      +
     65P  SER*     3.0     5.9    +      -       -      -
     66P  THR*     2.8    35.7    +      -       -      -
     67P  PHE*     3.6     9.8    +      -       +      -
    217P  VAL*     5.3     6.1    -      -       +      -
    221P  ARG*     3.5    41.3    -      -       +      +
    226P  HIS*     3.7    29.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 63 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59P  ARG*     3.0    52.0    +      -       +      +
     60P  ASP*     2.9    16.3    +      -       -      +
     62P  ILE*     1.3    75.7    -      -       +      +
     64P  GLU*     1.3    52.2    +      -       -      +
     67P  PHE*     3.1    31.9    -      -       +      +
     68P  GLN*     2.8    36.5    +      -       -      +
     12W  PHE*     3.4    27.3    -      -       +      -
     20W  VAL*     2.7    45.5    +      -       +      -
     24W  GLY*     3.7    10.1    -      -       -      +
     28W  ASP*     2.8    40.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 64 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96N  ARG*     2.8    46.3    +      -       -      -
      9P  HIS*     3.5    32.4    +      -       +      +
     11P  VAL*     4.2     6.1    -      -       -      +
     12P  ASN      5.1     1.0    +      -       -      -
     60P  ASP      2.7    22.1    +      -       -      +
     61P  VAL*     3.7    12.9    -      -       -      +
     63P  ARG*     1.3    72.9    -      -       -      +
     65P  SER*     1.3    57.2    +      -       -      +
     68P  GLN*     3.6    19.5    -      -       -      +
     69P  GLY      3.5     1.9    +      -       -      -
     70P  HIS*     2.9    32.8    +      -       +      +
     71P  HIS*     4.8     4.0    +      -       -      +
     20W  VAL*     3.6    20.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 65 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61P  VAL*     2.7    22.7    +      -       -      +
     62P  ILE*     3.0     7.8    +      -       -      -
     64P  GLU*     1.3    78.8    -      -       -      +
     66P  THR*     1.3    70.7    +      -       -      +
     67P  PHE      3.4     0.4    -      -       -      -
     69P  GLY*     3.1    23.8    +      -       -      -
     70P  HIS      4.2     1.3    -      -       -      +
     71P  HIS*     3.3    40.0    +      -       -      +
    221P  ARG*     4.7     3.1    +      -       -      -
    231P  HIS*     5.4     5.2    -      -       -      -
     14S  THR*     4.8     0.2    -      -       -      +
     17S  GLU*     4.5     7.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 66 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62P  ILE*     2.8    18.3    +      -       -      -
     65P  SER*     1.3    79.3    +      -       -      +
     67P  PHE*     1.3    81.0    +      -       +      +
    221P  ARG*     2.9    29.1    +      -       -      -
    226P  HIS*     3.9    29.1    +      -       +      +
     12S  GLN*     5.0     1.9    -      -       -      +
     14S  THR*     4.0     2.9    -      -       -      +
      5W  VAL*     4.1    13.9    -      -       +      -
      9W  GLN*     3.3    21.7    +      -       -      +
----------------------------------------------------------
 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