Contacts of the helix formed by residues 614 - 636 (chain D) in PDB entry 6JBQ


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 LEU 614 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    487D  THR*     3.4    28.3    -      -       -      +
    488D  ASN*     4.4    18.4    -      -       -      +
    490D  ILE*     3.8    28.0    -      -       +      -
    609D  TYR*     3.7    17.2    -      -       +      +
    612D  LEU      4.0     0.2    +      -       -      -
    613D  GLY*     1.3    73.9    -      -       -      -
    615D  LYS*     1.3    70.3    +      -       -      +
    616D  PRO*     3.6     0.7    -      -       -      -
    617D  THR*     3.4    12.9    +      -       -      -
    618D  VAL*     3.8    12.8    +      -       +      +
      5E  THR*     5.4     7.2    -      -       +      -
      6E  VAL      6.2     0.2    -      -       -      +
      7E  GLN*     3.4    43.6    -      -       +      +
     16E  ARG*     5.5     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 615 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    612D  LEU      5.6     3.0    +      -       -      -
    613D  GLY*     6.1     1.0    -      -       -      -
    614D  LEU*     1.3    80.3    -      -       -      +
    616D  PRO*     1.3    66.1    -      -       +      +
    618D  VAL*     4.2     8.5    +      -       -      +
    619D  ILE*     4.6     4.3    +      -       -      +
      5E  THR*     3.8    42.4    -      -       +      +
      7E  GLN*     4.6    22.8    -      -       +      +
      8E  ASP*     5.3    16.8    -      -       +      +
     11E  GLU*     5.1     7.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 616 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    584D  PRO*     5.6     9.0    -      -       +      -
    608D  CYS*     5.1     2.7    -      -       -      -
    612D  LEU*     3.4    49.4    -      -       +      +
    613D  GLY      4.4     0.4    -      -       -      -
    614D  LEU      3.9     0.7    -      -       -      -
    615D  LYS*     1.3    90.7    -      -       +      +
    617D  THR*     1.3    60.1    +      -       -      +
    618D  VAL      3.3     2.9    -      -       -      -
    619D  ILE*     3.3    14.7    -      -       +      +
    620D  PHE*     2.9    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 617 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    490D  ILE*     5.0     9.6    -      -       +      -
    500D  ILE*     5.7     7.8    -      -       +      +
    605D  LEU*     4.3    26.2    -      -       +      +
    608D  CYS*     3.8    24.3    -      -       -      -
    609D  TYR*     3.8    11.6    -      -       +      -
    613D  GLY      2.4    29.9    +      -       -      -
    614D  LEU*     3.4     9.0    +      -       -      -
    616D  PRO*     1.3    77.2    -      -       -      +
    618D  VAL*     1.3    59.5    +      -       -      +
    620D  PHE*     3.5     5.8    -      -       -      +
    621D  ALA*     2.9    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 618 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362D  ARG*     5.9     5.2    -      -       -      +
    363D  LEU*     3.8    38.5    -      -       +      +
    364D  HIS*     5.4     1.6    -      -       +      +
    487D  THR*     3.8    39.9    -      -       +      +
    490D  ILE*     4.9     8.1    -      -       +      -
    500D  ILE*     5.5     2.5    -      -       +      -
    614D  LEU*     3.8    18.3    +      -       +      +
    615D  LYS*     4.6     6.1    -      -       -      +
    616D  PRO      3.3     0.4    -      -       -      -
    617D  THR*     1.3    77.2    -      -       -      +
    619D  ILE*     1.3    57.5    +      -       -      +
    621D  ALA*     3.4     6.3    +      -       -      +
    622D  ASP*     2.9    29.1    +      -       +      +
      5E  THR*     5.8     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 619 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362D  ARG*     4.9    19.7    -      -       -      +
    615D  LYS      4.6     3.2    +      -       -      +
    616D  PRO*     3.3    26.8    -      -       +      +
    618D  VAL*     1.3    77.0    -      -       -      +
    620D  PHE*     1.3    59.7    +      -       -      +
    622D  ASP*     4.1     8.7    -      -       +      -
    623D  GLN*     2.9    45.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 620 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    582D  ILE*     3.5    35.4    -      -       +      -
    583D  VAL*     3.6    28.3    -      -       +      -
    584D  PRO*     3.8    13.0    -      -       +      -
    587D  LEU*     4.2    13.9    -      -       +      -
    604D  MET*     4.2    13.9    -      -       +      -
    605D  LEU*     3.9    19.1    -      -       +      -
    608D  CYS*     3.6    26.7    -      -       +      -
    616D  PRO      2.9    19.9    +      -       -      +
    617D  THR*     3.5     5.8    -      -       -      +
    618D  VAL      3.2     0.2    -      -       -      -
    619D  ILE*     1.3    75.8    -      -       -      +
    621D  ALA*     1.3    59.0    +      -       -      +
    623D  GLN*     3.4     2.7    +      -       -      +
    624D  ILE*     2.9    56.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 621 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363D  LEU*     4.7     1.3    -      -       +      -
    452D  LEU*     3.7    18.1    -      -       +      +
    500D  ILE*     4.6    19.3    -      -       +      +
    605D  LEU*     4.4    21.8    -      -       +      -
    617D  THR*     2.9    17.6    +      -       +      +
    618D  VAL      3.8     3.8    -      -       -      +
    620D  PHE*     1.3    76.5    -      -       -      +
    622D  ASP*     1.3    57.2    +      -       -      +
    624D  ILE*     3.6     8.7    -      -       -      +
    625D  MET*     2.9    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 622 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362D  ARG*     3.4    20.7    +      -       -      +
    363D  LEU*     3.4    29.4    +      -       +      +
    450D  HIS*     4.4     9.1    +      -       -      -
    452D  LEU*     4.8     3.8    -      -       -      +
    618D  VAL*     2.9    18.8    +      -       +      +
    619D  ILE*     3.7    12.1    -      -       +      +
    620D  PHE      3.2     0.2    -      -       -      -
    621D  ALA*     1.3    78.0    -      -       -      +
    623D  GLN*     1.3    57.4    +      -       +      +
    625D  MET*     3.3     6.2    +      -       -      +
    626D  TYR*     2.9    57.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 623 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    582D  ILE*     3.7    36.3    -      -       +      +
    619D  ILE*     2.9    34.8    +      -       +      +
    620D  PHE*     4.0     1.1    -      -       -      +
    622D  ASP*     1.3    73.5    -      -       +      +
    624D  ILE*     1.3    60.4    +      -       -      +
    626D  TYR*     3.6    27.7    -      -       -      +
    627D  THR*     2.9    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 624 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502D  PRO*     5.1     7.0    -      -       +      -
    506D  VAL*     3.3    20.7    -      -       +      +
    510D  LEU*     4.3     8.0    -      -       +      +
    579D  LEU*     5.3     7.4    -      -       +      -
    582D  ILE*     4.1     6.7    -      -       +      -
    601D  ILE*     4.2    20.0    -      -       +      -
    604D  MET*     4.3    14.1    -      -       -      -
    605D  LEU*     4.5    10.5    -      -       +      -
    620D  PHE*     2.9    58.7    +      -       +      +
    621D  ALA*     3.6     7.4    -      -       -      +
    623D  GLN*     1.3    76.8    -      -       -      +
    625D  MET*     1.3    57.4    +      -       -      +
    627D  THR*     3.3    10.7    -      -       +      +
    628D  GLY      2.9    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 625 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359D  PRO      3.9     7.4    -      -       -      +
    450D  HIS*     3.6    37.2    -      -       +      +
    451D  PRO*     3.7    15.3    -      -       +      -
    452D  LEU*     3.8    24.9    -      -       +      -
    506D  VAL*     4.0    12.3    -      -       +      -
    621D  ALA      2.9    17.3    +      -       -      +
    622D  ASP*     3.7     4.0    -      -       -      +
    624D  ILE*     1.3    76.5    -      -       +      +
    626D  TYR*     1.3    88.8    +      -       +      +
    628D  GLY*     3.9     0.2    -      -       -      -
    629D  PHE*     2.9    66.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 626 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359D  PRO      3.4    23.3    -      -       -      -
    360D  TYR*     3.8    11.3    +      -       -      -
    361D  LEU      3.5    20.6    +      -       -      -
    362D  ARG*     4.2     7.7    +      -       +      +
    622D  ASP*     2.9    42.3    +      -       -      +
    623D  GLN*     3.6    32.5    -      -       -      +
    625D  MET*     1.3    91.7    -      -       +      +
    627D  THR*     1.3    58.1    +      -       -      +
    629D  PHE*     3.4     5.4    +      +       +      +
    630D  ALA*     3.0    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 627 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    510D  LEU*     4.9    13.7    -      -       +      -
    513D  MET*     4.8     2.9    -      -       +      +
    578D  ILE*     5.6     1.4    -      -       -      +
    579D  LEU*     5.0     7.2    -      -       +      -
    582D  ILE*     4.3    22.1    -      -       +      +
    623D  GLN*     2.9    22.4    +      -       -      +
    624D  ILE*     3.3    12.6    -      -       -      +
    626D  TYR*     1.3    76.5    -      -       -      +
    628D  GLY*     1.3    60.5    +      -       -      +
    630D  ALA*     4.3     5.4    -      -       -      -
    631D  TYR*     2.9    56.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 628 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505D  ASP      4.4     1.6    -      -       -      +
    506D  VAL*     3.7    26.7    -      -       -      -
    509D  GLY*     4.6     4.0    -      -       -      -
    510D  LEU*     5.1     6.3    -      -       -      -
    513D  MET*     6.1     0.2    -      -       -      -
    624D  ILE      2.9    18.0    +      -       -      -
    627D  THR*     1.3    76.9    -      -       -      +
    629D  PHE*     1.3    62.9    +      -       -      +
    631D  TYR*     4.6     1.3    -      -       -      +
    632D  ALA*     2.9    33.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 629 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    808C  ASN*     3.8    19.1    +      -       +      +
    809C  GLY*     3.8    22.4    -      -       -      -
    812C  PHE*     4.1     9.2    -      +       -      -
    359D  PRO*     3.8    25.1    -      -       +      -
    451D  PRO*     3.7    30.7    -      -       +      -
    505D  ASP*     3.7    32.1    -      -       +      -
    506D  VAL*     4.6     6.7    -      -       +      -
    625D  MET*     2.9    53.7    +      -       +      +
    626D  TYR*     3.8     5.2    -      +       +      +
    628D  GLY*     1.3    76.4    -      -       -      +
    630D  ALA*     1.3    58.5    +      -       -      +
    632D  ALA*     3.5     3.9    +      -       +      +
    633D  ALA*     2.9    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 630 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    808C  ASN*     4.1    12.8    -      -       -      +
   1216C  ARG*     5.6     1.3    +      -       -      +
    538D  ARG*     5.8     4.9    -      -       -      +
    626D  TYR      3.0    18.1    +      -       -      +
    627D  THR*     3.9     6.7    -      -       -      +
    629D  PHE*     1.3    77.5    -      -       -      +
    631D  TYR*     1.3    66.1    +      -       +      +
    633D  ALA*     3.3     4.5    +      -       -      +
    634D  ARG*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 631 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509D  GLY*     5.0     8.5    -      -       -      +
    512D  TYR*     4.6     5.8    -      -       +      -
    513D  MET*     3.6    30.3    -      -       +      -
    534D  GLU*     4.7     7.8    +      -       -      +
    537D  TYR*     3.5    34.1    -      +       -      -
    538D  ARG*     4.0    26.9    +      -       -      -
    544D  LEU*     5.4     7.0    -      -       +      -
    578D  ILE*     3.7    29.5    -      -       +      +
    627D  THR*     2.9    44.1    +      -       -      +
    628D  GLY*     4.6     1.6    -      -       -      +
    630D  ALA*     1.3    78.5    -      -       +      +
    632D  ALA*     1.3    59.3    +      -       -      +
    634D  ARG*     3.7    18.0    -      -       +      +
    635D  SER*     2.9    28.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 632 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    806C  PRO*     3.3    33.8    -      -       +      +
    808C  ASN      6.1     0.4    -      -       -      +
    505D  ASP*     4.0    21.1    -      -       +      +
    508D  LEU*     6.0     2.9    -      -       +      -
    509D  GLY*     4.5     9.3    -      -       -      +
    628D  GLY      2.9    21.7    +      -       -      +
    629D  PHE*     3.9     5.4    -      -       +      +
    631D  TYR*     1.3    75.0    -      -       -      +
    633D  ALA*     1.3    65.5    +      -       -      +
    635D  SER*     3.5    10.8    +      -       -      -
    636D  GLY      3.6     9.5    +      -       -      -
    637D  ALA      5.0     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 633 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    805C  MET*     4.1     9.0    -      -       -      +
    806C  PRO      3.4    10.5    +      -       -      +
    807C  TRP*     4.3     6.0    -      -       +      -
    808C  ASN*     3.4    42.8    -      -       -      +
   1216C  ARG*     4.7     5.2    -      -       -      +
   1221C  PHE*     3.4    21.6    -      -       -      -
    629D  PHE      2.9    14.8    +      -       -      +
    630D  ALA      3.5     4.7    -      -       -      +
    632D  ALA*     1.3    78.5    -      -       -      +
    634D  ARG*     1.3    60.0    +      -       -      +
    635D  SER      3.5     0.3    +      -       -      -
    636D  GLY      4.3     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 634 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1214C  ASP*     5.8     0.7    -      -       -      +
   1219C  GLU*     3.0    42.9    +      -       -      +
   1220C  GLN      5.6     3.0    +      -       -      -
   1221C  PHE*     3.8    18.0    -      -       +      -
   1222C  GLU*     3.7    37.1    +      -       -      +
    512D  TYR*     5.6     0.4    -      -       -      -
    537D  TYR*     2.6    66.5    +      -       -      +
    538D  ARG*     3.8    21.7    +      -       -      +
    540D  GLY*     6.0     2.2    -      -       -      -
    630D  ALA      2.9    16.4    +      -       -      +
    631D  TYR*     3.7    15.7    -      -       +      +
    632D  ALA      3.3     0.2    -      -       -      -
    633D  ALA*     1.3    75.2    -      -       -      +
    635D  SER*     1.3    65.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 635 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1221C  PHE*     4.9     1.7    -      -       -      -
   1222C  GLU*     3.1    36.3    +      -       -      +
   1223C  ARG*     4.9     3.1    +      -       -      +
    509D  GLY*     5.8     1.1    -      -       -      -
    512D  TYR*     3.4    38.6    -      -       -      +
    631D  TYR      2.9    19.6    +      -       -      -
    632D  ALA*     3.9     8.3    -      -       -      -
    633D  ALA      3.3     0.8    -      -       -      -
    634D  ARG*     1.3    81.5    -      -       -      +
    636D  GLY*     1.3    61.5    +      -       -      +
    637D  ALA*     4.0    13.4    +      -       -      +
    724D  MET*     5.9     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 636 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    805C  MET*     4.6    18.8    -      -       -      -
    806C  PRO*     4.8     0.4    -      -       -      -
   1221C  PHE*     5.4     5.8    -      -       -      -
   1222C  GLU      4.0     1.9    -      -       -      +
   1223C  ARG*     3.1    27.2    -      -       -      +
   1225C  VAL*     3.7    15.2    -      -       -      +
    632D  ALA      3.6     9.3    +      -       -      -
    633D  ALA      4.3     1.0    +      -       -      -
    634D  ARG      3.8     0.8    -      -       -      -
    635D  SER*     1.3    80.1    -      -       -      +
    637D  ALA*     1.3    65.4    -      -       -      +
    638D  SER      3.6     1.0    +      -       -      -
----------------------------------------------------------
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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