Contacts of the helix formed by residues 1190 - 1209 (chain A) in PDB entry 2CKJ


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 ALA1190 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  HIS*     3.4    42.2    -      -       +      +
    195A  LEU*     3.5    25.0    -      -       +      +
    577A  PRO*     3.9     7.9    -      -       +      +
   1188A  ASN*     3.1    10.0    +      -       -      +
   1189A  PRO*     1.4    78.2    -      -       -      +
   1191A  ILE*     1.3    64.9    +      -       +      +
   1192A  ASP      3.2     5.9    -      -       -      +
   1193A  ILE*     4.1     2.1    -      -       -      +
   1194A  GLY*     3.5    13.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE1191 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  HIS*     5.7     1.8    -      -       -      +
    112A  GLN*     5.2     4.4    -      -       +      +
    578A  LEU      4.2     8.3    -      -       -      +
    579A  PRO*     5.6     0.7    -      -       +      -
    580A  HIS*     4.8    11.0    -      -       +      +
   1041A  GLN*     3.7    27.8    -      -       -      +
   1042A  GLY*     4.4     9.9    -      -       -      +
   1045A  THR*     4.3    22.4    -      -       +      +
   1046A  LYS*     3.8    16.6    -      -       +      +
   1188A  ASN*     3.3    34.6    +      -       +      +
   1190A  ALA*     1.3    74.3    -      -       +      +
   1192A  ASP*     1.3    60.1    +      -       -      +
   1194A  GLY*     3.7     2.4    +      -       -      -
   1195A  GLN*     3.0    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1192 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1046A  LYS*     3.2    23.7    +      -       -      -
   1183A  VAL*     4.7    12.5    -      -       +      +
   1186A  SER*     2.2    42.3    +      -       -      +
   1187A  LEU      3.7     2.6    +      -       -      -
   1188A  ASN      2.8    21.7    +      -       -      +
   1189A  PRO*     2.6    14.2    -      -       +      +
   1190A  ALA      3.2     0.3    -      -       -      +
   1191A  ILE*     1.3    72.7    -      -       -      +
   1193A  ILE*     1.3    72.9    +      -       +      +
   1194A  GLY      3.1     0.5    +      -       -      -
   1195A  GLN*     3.9     6.7    -      -       -      -
   1244A  LEU*     4.9     1.8    -      -       +      -
   1258A  LYS      5.3     2.5    -      -       -      +
   1260A  VAL*     3.6    25.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE1193 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  ARG*     4.3    20.6    -      -       -      +
    195A  LEU*     4.8    14.1    -      -       +      -
    559A  GLN*     4.6    14.4    -      -       +      -
    560A  LEU      5.0     7.0    -      -       -      +
    561A  PHE*     5.1     7.9    -      -       +      -
   1189A  PRO      2.9    15.9    -      -       -      +
   1190A  ALA      4.1     2.7    -      -       -      +
   1192A  ASP*     1.3    79.9    -      -       -      +
   1194A  GLY*     1.3    61.0    +      -       -      +
   1195A  GLN*     2.9     1.2    -      -       -      +
   1196A  VAL*     3.1    29.6    -      -       -      +
   1197A  GLU*     2.5    40.5    +      -       -      +
   1242A  VAL*     4.2    22.9    -      -       +      -
   1244A  LEU*     4.2    26.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1194 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  HIS*     6.2     1.3    -      -       -      -
    112A  GLN*     3.2    28.2    +      -       -      +
    150A  CYS      4.5     0.2    -      -       -      +
    151A  THR      5.1     2.4    -      -       -      +
    154A  ARG*     6.0     0.4    -      -       -      -
    155A  PRO*     6.5     0.7    -      -       -      -
   1190A  ALA      3.5    10.2    +      -       -      -
   1191A  ILE*     3.8     5.2    -      -       -      -
   1192A  ASP      3.1     3.4    +      -       -      -
   1193A  ILE*     1.3    82.9    -      -       -      +
   1195A  GLN*     1.3    63.2    +      -       -      +
   1197A  GLU*     4.3     7.5    -      -       -      +
   1198A  GLY*     3.1    17.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1195 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  GLN*     4.4    12.3    +      -       -      +
    150A  CYS      5.6     0.8    +      -       -      -
    913A  ARG*     3.8    20.6    +      -       -      +
   1041A  GLN*     3.6    36.0    +      -       -      +
   1046A  LYS*     5.6     2.0    -      -       -      +
   1191A  ILE*     3.0    22.3    +      -       -      +
   1192A  ASP*     3.9     0.2    -      -       -      -
   1193A  ILE      2.9     6.0    -      -       -      +
   1194A  GLY*     1.3    80.6    +      -       -      +
   1196A  VAL*     1.4    64.8    +      -       -      +
   1198A  GLY*     3.9     0.2    -      -       -      -
   1199A  ALA*     3.3    21.5    +      -       -      +
   1260A  VAL*     3.2    44.6    -      -       +      +
   1261A  GLY*     4.2     7.7    -      -       -      +
   1264A  PRO*     4.9     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1196 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1179A  ILE*     4.1    22.0    -      -       +      -
   1181A  MET*     4.0    30.7    -      -       +      -
   1193A  ILE*     2.8    29.9    +      -       -      +
   1195A  GLN*     1.4    75.7    -      -       -      +
   1197A  GLU*     1.3    67.8    +      -       -      +
   1199A  ALA*     3.3     2.8    +      -       -      +
   1200A  PHE*     3.1    20.1    +      -       -      +
   1242A  VAL*     3.9    28.0    -      -       +      -
   1244A  LEU*     5.0     7.4    -      -       +      -
   1260A  VAL*     4.6    12.3    -      -       +      +
   1264A  PRO*     4.4    14.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU1197 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  THR      4.4    10.5    -      -       -      +
    152A  GLY*     4.7     1.1    -      -       -      +
    154A  ARG*     2.7    58.0    +      -       -      +
    155A  PRO*     4.0     9.0    -      -       -      +
    559A  GLN*     4.3     6.6    -      -       -      +
   1193A  ILE*     2.5    24.3    +      -       -      +
   1194A  GLY*     4.3     5.8    -      -       -      +
   1196A  VAL*     1.3    76.4    -      -       -      +
   1198A  GLY*     1.3    64.1    +      -       -      +
   1200A  PHE*     3.6     2.7    -      -       -      +
   1201A  VAL*     3.0    27.7    +      -       -      +
   1240A  PHE*     3.4    38.5    -      -       +      +
   1242A  VAL*     4.2    12.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1198 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  ARG      5.0     3.5    -      -       -      +
    150A  CYS      3.6    27.1    -      -       -      -
    151A  THR      4.4     7.5    +      -       -      -
    152A  GLY      4.4     1.6    -      -       -      -
    913A  ARG*     3.8     9.8    +      -       -      -
   1194A  GLY      3.1    12.2    +      -       -      -
   1195A  GLN      3.9     0.9    -      -       -      -
   1196A  VAL      3.2     0.2    +      -       -      -
   1197A  GLU*     1.3    81.2    -      -       -      +
   1199A  ALA*     1.3    61.5    +      -       -      +
   1201A  VAL*     3.4     4.9    +      -       -      +
   1202A  GLN*     3.0    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1199 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    913A  ARG*     3.2    36.8    -      -       -      +
   1195A  GLN      3.3    12.4    +      -       -      +
   1196A  VAL      3.8     3.1    -      -       -      +
   1198A  GLY*     1.3    73.9    -      -       -      +
   1200A  PHE*     1.4    53.9    +      -       -      +
   1202A  GLN*     2.6    24.0    +      -       -      +
   1203A  GLY      2.9    10.9    +      -       -      -
   1261A  GLY      4.1     3.1    -      -       -      +
   1264A  PRO*     3.9    19.7    -      -       +      -
   1265A  LEU*     3.6    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1200 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1159A  ALA*     5.0     1.3    -      -       +      -
   1161A  SER*     4.7     1.8    -      -       -      -
   1177A  THR*     3.7    29.6    -      -       +      -
   1179A  ILE*     4.0    23.6    -      -       +      -
   1196A  VAL*     3.1    13.9    +      -       +      +
   1197A  GLU*     3.6    10.1    -      -       -      +
   1199A  ALA*     1.4    72.4    -      -       -      +
   1201A  VAL*     1.3    69.8    +      -       +      +
   1203A  GLY      3.3     2.0    +      -       -      +
   1204A  LEU*     3.1    29.2    +      -       +      +
   1237A  PRO*     4.6     7.0    -      -       +      -
   1240A  PHE*     3.7    22.7    -      +       -      -
   1264A  PRO*     4.5     9.1    +      -       +      +
   1265A  LEU*     4.3     1.9    -      -       -      +
   1267A  LEU*     3.7    14.6    -      -       +      -
   1268A  ALA*     3.2    42.1    -      -       +      +
   1270A  SER*     4.5     1.3    -      -       -      -
   1271A  ILE*     4.2    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL1201 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  ARG      6.0     1.6    -      -       -      +
    152A  GLY*     4.1    18.2    -      -       -      +
    153A  TYR*     5.5     3.6    -      -       +      -
   1197A  GLU      3.0    16.0    +      -       -      +
   1198A  GLY      3.7     5.2    -      -       -      +
   1200A  PHE*     1.3    83.5    -      -       +      +
   1202A  GLN*     1.3    64.2    +      -       +      +
   1204A  LEU*     2.9    30.1    -      -       +      +
   1205A  GLY      3.2     4.2    +      -       -      -
   1231A  PRO*     3.8    26.5    -      -       +      +
   1236A  ILE*     3.5    32.8    -      -       +      -
   1237A  PRO*     5.1     0.4    -      -       +      -
   1240A  PHE*     4.4    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN1202 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  ARG*     3.7    46.5    -      -       +      +
    740A  GLN*     4.0     8.1    +      -       -      +
    742A  HIS      4.4     0.6    +      -       -      -
    799A  PHE*     3.1    33.3    -      -       -      -
    840A  ARG*     5.9     0.2    +      -       -      -
    912A  PHE*     4.2    16.8    -      -       +      -
    913A  ARG*     2.7    41.9    +      -       -      -
   1198A  GLY      3.0    10.1    +      -       -      +
   1199A  ALA      2.6    17.1    +      -       -      +
   1201A  VAL*     1.3    74.0    -      -       +      +
   1203A  GLY*     1.3    61.0    +      -       -      +
   1205A  GLY*     3.3     2.8    +      -       -      +
   1206A  LEU*     3.2    21.0    +      -       -      +
   1231A  PRO*     5.8     0.2    -      -       -      -
   1265A  LEU*     4.0    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1203 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1199A  ALA      2.9    10.5    +      -       -      -
   1200A  PHE      3.3     0.8    +      -       -      -
   1201A  VAL      3.1     0.4    -      -       -      -
   1202A  GLN*     1.3    76.0    -      -       -      +
   1204A  LEU*     1.3    64.8    +      -       -      +
   1206A  LEU*     3.1     4.7    +      -       -      -
   1207A  PHE*     2.8    33.2    +      -       -      +
   1265A  LEU*     3.7    21.8    -      -       -      +
   1268A  ALA*     3.4    20.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1204 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1172A  HIS*     5.7     0.2    -      -       -      +
   1174A  ASN*     4.0    21.3    -      -       -      +
   1200A  PHE*     3.1    23.8    +      -       +      +
   1201A  VAL*     2.9    27.6    +      -       +      +
   1203A  GLY*     1.3    74.8    -      -       -      +
   1205A  GLY*     1.3    58.5    +      -       -      +
   1207A  PHE*     5.5     0.2    -      -       -      -
   1208A  THR*     2.5    48.0    +      -       +      +
   1209A  LEU*     4.9    10.3    -      -       +      -
   1231A  PRO*     5.0     8.3    -      -       +      -
   1235A  SER*     4.8     7.4    -      -       -      +
   1236A  ILE*     5.8     0.4    -      -       -      -
   1237A  PRO*     4.8     9.6    -      -       +      -
   1268A  ALA*     3.3     5.3    -      -       +      +
   1271A  ILE*     3.7    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY1205 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1201A  VAL      3.2     7.1    +      -       -      -
   1202A  GLN*     3.7     2.9    -      -       -      -
   1203A  GLY      3.2     0.8    -      -       -      -
   1204A  LEU*     1.3    78.6    -      -       -      +
   1206A  LEU*     1.4    55.9    +      -       -      +
   1209A  LEU*     2.9    34.6    +      -       -      -
   1210A  GLU*     3.1    37.3    +      -       -      -
   1231A  PRO*     4.5     9.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1206 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737A  ILE*     5.1     3.6    -      -       +      -
    738A  GLY      3.8    22.4    -      -       -      +
    739A  GLY      4.2     2.0    -      -       -      +
    740A  GLN*     3.6    39.0    -      -       +      +
    840A  ARG*     3.9    34.1    -      -       -      +
    918A  PRO*     5.1     4.0    -      -       +      -
    919A  GLN*     6.1     3.8    -      -       +      -
   1202A  GLN      3.2    11.3    +      -       -      +
   1203A  GLY      3.1     4.3    +      -       -      +
   1205A  GLY*     1.4    71.8    -      -       -      +
   1207A  PHE*     1.3    87.3    +      -       +      +
   1210A  GLU*     5.0     3.8    -      -       -      +
   1265A  LEU*     4.7     9.6    -      -       +      -
   1299A  SER*     3.2    14.5    +      -       -      +
   1300A  PRO*     3.7     9.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1207 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737A  ILE*     5.1     6.7    -      -       +      -
    918A  PRO*     4.3    16.4    -      -       +      -
    919A  GLN*     6.4     0.7    -      -       +      -
    922A  LEU*     4.6    17.7    -      -       +      -
   1203A  GLY*     2.8    21.4    +      -       -      +
   1204A  LEU*     5.5     0.4    -      -       -      -
   1206A  LEU*     1.3   109.6    -      -       +      +
   1208A  THR*     1.3    64.9    +      -       +      +
   1265A  LEU*     4.8     2.9    -      -       +      -
   1266A  PHE*     3.7    30.3    -      +       -      -
   1268A  ALA*     3.9     7.2    -      -       +      -
   1269A  ALA*     3.3    39.3    -      -       +      -
   1272A  PHE*     4.2    20.8    -      +       +      +
   1299A  SER*     4.1    14.5    +      -       -      -
   1300A  PRO*     3.2     4.3    -      -       -      +
   1301A  ALA*     2.7    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR1208 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1172A  HIS*     4.8    11.5    -      -       -      -
   1204A  LEU*     2.5    36.1    +      -       +      +
   1205A  GLY      3.4     0.2    +      -       -      -
   1206A  LEU      3.6     0.2    -      -       -      -
   1207A  PHE*     1.3    90.9    -      -       +      +
   1209A  LEU*     1.3    75.5    +      -       -      +
   1271A  ILE*     4.5    14.1    -      -       +      -
   1272A  PHE*     5.0     5.4    -      -       -      +
   1275A  ILE*     4.0    24.9    -      -       +      -
   1300A  PRO*     4.1     2.2    -      -       -      +
   1301A  ALA*     3.3    30.7    -      -       +      +
   1302A  THR*     3.9     7.0    -      -       -      -
   1303A  PRO*     4.6     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1209 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425A  SER*     4.0    33.2    -      -       -      +
   1172A  HIS*     5.8     6.3    -      -       +      -
   1204A  LEU*     4.9     6.3    -      -       +      -
   1205A  GLY*     2.9    20.4    +      -       -      +
   1208A  THR*     1.3    96.1    -      -       -      +
   1210A  GLU*     1.3    60.1    +      -       +      +
   1211A  GLU*     4.0     1.7    +      -       -      +
   1229A  LYS*     3.8    26.0    +      -       +      +
   1230A  ILE      5.3     0.2    -      -       -      -
   1231A  PRO*     4.2    21.3    -      -       +      -
   1235A  SER*     3.9    23.1    -      -       -      +
   1300A  PRO*     4.5     1.4    -      -       -      +
   1302A  THR*     4.4    12.9    -      -       +      +
   1303A  PRO*     5.2     5.8    -      -       +      -
----------------------------------------------------------
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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