Contacts of the helix formed by residues 438 - 458 (chain B) in PDB entry 1P1K


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 ASP 438 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323B  SER*     5.3     2.8    -      -       -      -
    324B  GLY      5.4     3.1    +      -       -      -
    352B  LEU*     4.1     9.9    -      -       -      +
    354B  ASN*     4.4     2.2    -      -       -      +
    356B  ASP*     4.4     1.4    -      -       -      +
    410B  ASP*     3.0    20.0    +      -       -      +
    412B  LYS*     3.7    41.8    +      -       +      +
    436B  CYS*     3.1    11.9    +      -       -      -
    437B  GLU*     1.3    70.6    -      -       -      +
    439B  SER*     1.3    57.6    +      -       -      +
    441B  LEU*     3.1    11.8    +      -       -      +
    442B  ALA*     3.0    23.0    +      -       -      +
    660B  NAI      3.1    40.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 439 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  ASN*     3.0    21.4    -      -       -      +
     77B  ASN*     3.4    10.1    +      -       -      -
     80B  THR*     4.0    18.6    -      -       -      -
    163B  VAL*     4.1     7.2    -      -       -      -
    410B  ASP*     2.9    24.3    +      -       -      -
    437B  GLU      3.2     1.0    -      -       -      -
    438B  ASP*     1.3    71.8    -      -       -      +
    440B  LEU*     1.3    57.0    +      -       -      +
    441B  LEU      3.0     5.8    -      -       -      -
    442B  ALA      4.2     0.2    -      -       -      +
    443B  THR*     2.8    37.3    +      -       -      -
    660B  NAI      3.0    13.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 440 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  LEU*     3.9    20.6    -      -       +      +
    423A  MET*     3.8    34.6    -      -       +      +
    424A  LEU      5.3     1.3    -      -       -      +
    426A  GLY*     3.4    34.1    -      -       -      +
     80B  THR*     4.2     7.4    -      -       +      -
    106B  PHE      4.7     1.2    -      -       -      +
    107B  GLY*     5.3     0.3    -      -       -      -
    163B  VAL*     4.1    11.9    -      -       +      +
    164B  LEU*     4.0    24.9    -      -       +      -
    437B  GLU*     2.9    38.7    +      -       +      +
    439B  SER*     1.3    76.6    -      -       -      +
    441B  LEU*     1.3    62.0    +      -       -      +
    443B  THR*     4.9     0.2    -      -       -      -
    444B  PRO*     3.2    18.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 441 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  ILE*     4.0    18.8    -      -       +      -
    422A  LEU*     3.8    28.3    -      -       +      -
    428A  ASN*     5.5     4.9    -      -       -      +
    107B  GLY*     5.2     4.1    -      -       -      +
    324B  GLY*     4.0    30.5    -      -       -      +
    434B  ASN*     5.9     3.6    -      -       -      +
    436B  CYS*     3.7    29.6    -      -       -      -
    437B  GLU      3.7     0.4    +      -       -      -
    438B  ASP*     3.1    12.9    +      -       -      +
    439B  SER      3.0     0.2    -      -       -      -
    440B  LEU*     1.3    82.2    -      -       -      +
    442B  ALA*     1.3    60.6    +      -       -      +
    443B  THR      3.4     0.2    -      -       -      -
    444B  PRO*     3.1    19.4    -      -       +      +
    445B  LEU*     3.5    12.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 442 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77B  ASN*     3.3    29.8    -      -       -      +
    321B  LEU*     4.5     5.1    -      -       +      +
    438B  ASP      3.0     9.0    +      -       -      +
    439B  SER      4.0     0.4    -      -       -      +
    441B  LEU*     1.3    76.7    -      -       -      +
    443B  THR*     1.3    65.8    +      -       -      +
    445B  LEU*     3.1    12.3    +      -       -      +
    446B  ILE*     2.8    25.8    +      -       -      +
    660B  NAI      3.6    30.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 443 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  MET*     3.9    13.2    -      -       +      -
     77B  ASN*     3.9    10.0    +      -       -      -
     80B  THR*     3.1    28.6    -      -       -      +
     81B  LEU*     3.7    30.3    -      -       +      +
     84B  SER*     3.9    12.8    -      -       -      +
    439B  SER      2.8    24.8    +      -       -      -
    442B  ALA*     1.3    71.1    -      -       -      +
    444B  PRO*     1.3    63.2    -      -       +      +
    446B  ILE*     2.7    34.0    +      -       -      +
    447B  ILE*     2.9    11.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 444 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  MET*     3.5    22.9    -      -       +      -
    106B  PHE      4.2     0.2    -      -       -      +
    107B  GLY*     3.4    35.4    -      -       -      +
    108B  SER*     3.6     6.2    +      -       -      +
    440B  LEU      3.2    24.9    -      -       -      +
    441B  LEU*     3.1    19.1    -      -       -      +
    443B  THR*     1.3    95.5    -      -       -      +
    445B  LEU*     1.3    59.4    +      -       -      -
    447B  ILE*     3.3    11.7    +      -       +      +
    448B  ASP*     3.0    29.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 445 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107B  GLY      4.8     1.3    +      -       -      -
    321B  LEU*     4.0    22.7    -      -       +      +
    322B  LYS*     3.8    21.5    -      -       +      +
    327B  LYS*     6.2     1.6    -      -       +      +
    441B  LEU      3.5    11.2    +      -       -      +
    442B  ALA*     3.1    12.4    +      -       -      +
    444B  PRO*     1.3    77.9    -      -       -      +
    446B  ILE*     1.3    67.7    +      -       -      +
    448B  ASP*     3.2     9.7    +      -       -      +
    449B  LEU*     3.0    34.9    +      -       +      +
    487B  TRP*     3.0    54.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 446 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70B  LEU*     4.7     4.9    -      -       +      -
     77B  ASN*     3.8    31.6    -      -       +      +
     81B  LEU*     3.8    23.1    -      -       +      -
    242B  LEU*     3.9    28.0    -      -       +      -
    244B  THR*     3.9    13.9    -      -       +      +
    321B  LEU*     4.0    24.9    -      -       +      -
    442B  ALA      2.8    15.5    +      -       -      +
    443B  THR*     2.7    12.4    +      -       -      +
    445B  LEU*     1.3    79.3    -      -       -      +
    447B  ILE*     1.3    61.1    +      -       -      +
    449B  LEU*     3.2     7.1    +      -       -      +
    450B  LEU*     3.1    31.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 447 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  MET*     4.6     1.1    -      -       +      -
     81B  LEU*     3.5    21.3    -      -       +      -
     84B  SER*     4.0    13.2    -      -       -      +
     85B  VAL*     5.4     0.7    -      -       +      -
    105B  TYR*     3.5    37.5    -      -       +      -
    108B  SER*     4.2    12.6    -      -       -      +
    111B  GLN*     4.4     2.7    -      -       +      -
    139B  PRO*     3.8    30.3    -      -       +      -
    142B  PHE*     4.4     9.0    -      -       +      -
    443B  THR*     2.9    12.3    +      -       +      +
    444B  PRO*     3.4    17.7    -      -       +      +
    445B  LEU      3.2     0.2    -      -       -      -
    446B  ILE*     1.3    77.6    -      -       -      +
    448B  ASP*     1.3    62.7    +      -       -      +
    450B  LEU*     3.4     2.5    +      -       -      +
    451B  VAL*     3.0    30.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 448 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107B  GLY      4.2     2.8    -      -       -      +
    108B  SER*     2.4    26.3    +      -       -      -
    109B  MET*     2.7    30.5    +      -       -      +
    110B  THR*     2.7    28.0    +      -       +      -
    444B  PRO      3.0    17.8    +      -       -      +
    445B  LEU*     3.2     5.7    +      -       -      +
    447B  ILE*     1.3    75.3    -      -       -      +
    449B  LEU*     1.3    58.1    +      -       -      +
    451B  VAL*     3.4     0.7    +      -       -      +
    452B  MET*     3.0    35.3    +      -       -      +
    487B  TRP*     3.5    32.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 449 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242B  LEU*     4.6     3.8    -      -       +      -
    293B  ILE*     4.2    26.5    -      -       +      -
    321B  LEU*     3.9    18.4    -      -       +      -
    445B  LEU*     3.0    36.1    +      -       +      +
    446B  ILE*     3.2    10.7    +      -       -      +
    448B  ASP*     1.3    78.0    -      -       -      +
    450B  LEU*     1.3    57.6    +      -       -      +
    452B  MET*     3.5     3.3    +      -       -      +
    453B  THR*     2.8    35.5    +      -       -      -
    484B  LEU*     3.9    26.3    -      -       +      +
    487B  TRP*     3.6    35.7    -      -       +      +
    488B  LEU*     4.5     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 450 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66B  LEU*     4.3     0.6    -      -       -      +
     68B  ILE*     3.6    41.7    -      -       +      -
     70B  LEU*     4.9     0.9    -      -       +      -
     81B  LEU*     5.2     4.0    -      -       +      -
    142B  PHE*     4.0    23.8    -      -       +      -
    240B  ILE*     3.5    34.3    -      -       +      +
    242B  LEU*     3.7    28.3    -      -       +      -
    293B  ILE*     4.1     2.0    -      -       +      -
    446B  ILE*     3.1    33.4    +      -       +      +
    447B  ILE*     3.9     4.3    -      -       -      +
    449B  LEU*     1.3    76.7    -      -       -      +
    451B  VAL*     1.3    63.3    +      -       -      +
    453B  THR*     4.5     1.1    -      -       -      -
    454B  GLU*     3.1    26.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 451 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66B  LEU*     5.7     0.2    -      -       -      -
    110B  THR*     3.9    24.5    -      -       +      +
    111B  GLN*     4.1    14.4    -      -       -      +
    136B  MET*     4.1    23.4    -      -       +      +
    137B  VAL*     3.3    30.2    +      -       -      +
    139B  PRO*     4.5     1.6    -      -       +      -
    142B  PHE*     3.9    17.0    -      -       +      -
    447B  ILE*     3.0    25.3    +      -       +      +
    448B  ASP      3.8     3.6    -      -       -      +
    450B  LEU*     1.3    77.8    -      -       -      +
    452B  MET*     1.3    59.3    +      -       -      +
    454B  GLU*     3.6     6.4    +      -       -      +
    455B  PHE*     3.0    24.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 452 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110B  THR*     4.0     8.7    -      -       +      -
    130B  PHE*     3.9    17.7    -      -       +      -
    136B  MET*     3.8    30.7    -      -       +      +
    448B  ASP      3.0    20.5    +      -       -      +
    449B  LEU      4.2     1.3    -      -       -      +
    451B  VAL*     1.3    74.2    -      -       -      +
    453B  THR*     1.3    61.7    +      -       -      +
    455B  PHE*     3.5    16.4    -      -       +      +
    456B  CYS*     3.0    42.1    +      -       -      -
    484B  LEU*     4.1    18.4    -      -       +      -
    487B  TRP*     3.7    19.7    -      -       +      -
    510B  LEU*     3.8    25.6    -      -       +      -
    513B  PHE*     5.6     4.5    -      -       +      -
    514B  LEU*     4.7     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 453 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  ILE*     4.0     8.1    -      -       +      -
    291B  PRO*     3.6    33.0    -      -       +      -
    293B  ILE*     3.2    24.1    -      -       +      +
    315B  PHE*     5.0     0.4    -      -       +      -
    449B  LEU      2.8    24.3    +      -       -      -
    450B  LEU      3.9     2.9    -      -       -      -
    452B  MET*     1.3    73.9    -      -       -      +
    454B  GLU*     1.3    66.3    +      -       -      +
    456B  CYS*     3.2     3.1    +      -       -      +
    457B  THR*     3.1    27.9    +      -       +      +
    481B  LEU*     4.1    20.1    -      -       +      +
    484B  LEU*     3.4    15.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 454 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63B  PRO*     3.4     2.6    -      -       +      +
     66B  LEU*     3.7    28.5    -      -       +      -
    137B  VAL*     3.1    25.5    +      -       +      +
    238B  LYS*     2.9    31.2    +      -       -      +
    240B  ILE*     3.8     6.5    -      -       +      +
    450B  LEU      3.1    16.3    +      -       -      +
    451B  VAL*     3.7     5.6    -      -       -      +
    453B  THR*     1.3    80.5    -      -       -      +
    455B  PHE*     1.3    61.4    +      -       -      +
    457B  THR*     2.5    25.0    +      -       -      -
    458B  ARG*     3.0    40.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 455 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  LEU*     4.2    12.1    -      -       +      +
    134B  LEU*     3.7    30.5    -      -       +      -
    135B  PRO      3.6    20.2    -      -       -      -
    136B  MET*     3.6    22.7    -      -       +      -
    451B  VAL      3.0    19.2    +      -       -      +
    452B  MET*     3.5    18.4    -      -       +      +
    454B  GLU*     1.3    82.7    +      -       -      +
    456B  CYS*     1.3    73.9    +      -       -      +
    458B  ARG*     3.1    24.4    +      -       -      +
    459B  VAL*     3.7    15.0    -      -       +      +
    513B  PHE*     4.1     7.0    -      +       -      -
    514B  LEU*     3.8    15.0    -      -       +      -
    517B  LEU*     3.5    32.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 456 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315B  PHE*     3.2    19.9    -      -       +      -
    452B  MET*     3.0    31.8    +      -       -      +
    453B  THR      3.2     4.2    +      -       -      +
    455B  PHE*     1.3    82.4    -      -       -      +
    457B  THR*     1.3    60.9    +      -       -      +
    458B  ARG      3.0     6.1    -      -       -      -
    459B  VAL*     3.1    23.9    +      -       -      +
    477B  PHE*     3.9    30.9    -      -       +      +
    481B  LEU*     4.1    13.7    -      -       +      -
    483B  PHE*     4.9     6.7    -      -       -      -
    484B  LEU*     4.9    11.0    -      -       -      -
    513B  PHE*     4.9     3.1    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 457 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238B  LYS*     2.9    26.3    +      -       -      +
    291B  PRO*     3.8    26.0    -      -       +      -
    315B  PHE*     3.5    24.9    -      -       +      -
    453B  THR*     3.1    15.2    +      -       +      +
    454B  GLU*     2.5    23.2    +      -       -      -
    456B  CYS*     1.3    77.5    -      -       -      +
    458B  ARG*     1.3    58.1    +      -       -      +
    459B  VAL      3.3     3.3    +      -       -      +
    476B  ASN*     4.5     9.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 458 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  LYS      3.5     1.2    -      -       -      +
     58B  LEU*     3.2    13.5    -      -       +      +
     59B  ASP*     2.8    72.7    +      -       +      +
     60B  LEU      4.0     1.4    +      -       -      -
     61B  LYS      3.4    19.1    -      -       -      -
     62B  LYS*     3.5    21.7    -      -       -      +
     63B  PRO*     4.6     1.8    -      -       -      -
    135B  PRO*     3.0    43.0    +      -       -      +
    136B  MET*     4.1     4.8    -      -       -      +
    238B  LYS*     4.8     5.8    -      -       +      +
    454B  GLU*     3.0    41.5    +      -       -      +
    455B  PHE*     3.1    19.0    +      -       -      +
    456B  CYS      3.0     1.2    -      -       -      -
    457B  THR*     1.3    81.9    +      -       -      +
    459B  VAL*     1.3    59.5    +      -       -      +
    460B  SER*     5.1     1.1    +      -       -      -
----------------------------------------------------------
 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