Contacts of the helix formed by residues 213 - 233 (chain C) in PDB entry 1IR1


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 ARG 213 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146B  LYS*     5.1     4.4    -      -       -      +
    149B  GLN      5.5     3.6    +      -       -      -
    152B  PRO      5.7     0.7    -      -       -      +
    285B  ARG*     3.8    45.8    -      -       -      +
    372B  PRO*     6.1     3.8    -      -       -      +
    208C  SER*     3.6    17.0    +      -       -      +
    209C  GLN*     3.4    32.6    +      -       -      +
    210C  PRO*     3.6    30.6    +      -       -      +
    212C  MET*     1.3    75.0    -      -       -      +
    214C  TRP*     1.3    68.2    +      -       +      +
    215C  ARG*     3.4     4.0    -      -       +      +
    216C  ASP*     3.3    24.6    +      -       -      +
    217C  ARG*     3.2    19.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 214 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286B  ASP*     4.8    16.0    +      -       +      -
    207C  ASN      3.5    15.9    -      -       -      +
    208C  SER*     3.2    29.0    +      -       -      +
    212C  MET      3.9     0.4    +      -       -      -
    213C  ARG*     1.3    73.1    -      -       +      +
    215C  ARG*     1.3    93.2    +      -       +      +
    217C  ARG*     3.2    13.1    +      -       -      +
    218C  PHE*     2.9    46.9    +      +       +      -
    252C  LYS*     3.7    30.5    -      -       +      -
    253C  ARG*     3.6    57.4    -      -       +      +
    256C  PHE*     3.9    28.5    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 215 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161B  LYS*     5.6     0.6    -      -       -      +
    258B  ARG*     3.5    22.8    -      -       -      +
    285B  ARG*     3.7    21.1    -      -       -      +
    286B  ASP*     3.0    25.3    +      -       -      +
    287B  ASN*     3.5    17.6    +      -       -      +
    288B  GLY*     3.5    20.2    -      -       -      +
    213C  ARG*     3.4     2.9    -      -       +      +
    214C  TRP*     1.3   105.8    -      -       +      +
    216C  ASP*     1.3    66.2    +      -       -      +
    218C  PHE*     3.5     2.7    +      -       -      +
    219C  LEU*     3.1    41.0    +      -       -      +
    256C  PHE*     3.3    48.7    -      -       +      -
     58T  SER*     4.8     7.5    -      -       -      -
     59T  PRO*     4.6     2.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 216 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152B  PRO      5.1     1.6    -      -       -      +
    153B  HIS*     3.6    13.4    +      -       -      -
    157B  VAL*     3.6    30.4    -      -       +      +
    161B  LYS*     2.8    32.4    +      -       -      +
    285B  ARG*     6.0     1.3    -      -       -      -
    182C  ALA*     3.7    16.8    -      -       +      -
    213C  ARG*     3.3    25.9    +      -       -      +
    214C  TRP      3.2     0.2    -      -       -      -
    215C  ARG*     1.3    79.3    -      -       -      +
    217C  ARG*     1.3    63.7    +      -       -      +
    219C  LEU*     3.4     5.1    +      -       -      +
    220C  PHE*     3.1    30.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 217 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182C  ALA*     3.8    10.9    -      -       -      +
    185C  TYR*     3.7    13.0    -      -       +      -
    202C  ASP*     2.8    40.6    +      -       -      +
    206C  VAL*     3.5    22.5    +      -       -      +
    207C  ASN      2.9    29.5    +      -       -      -
    212C  MET*     3.6    38.6    +      -       -      +
    213C  ARG      3.2     6.2    +      -       -      +
    214C  TRP*     3.2    11.0    +      -       -      +
    216C  ASP*     1.3    80.2    -      -       -      +
    218C  PHE*     1.3    84.6    +      -       +      +
    220C  PHE*     3.9     0.3    -      -       -      +
    221C  CYS*     2.9    38.5    +      -       -      +
    240C  LEU*     5.2     1.3    -      -       +      +
    241C  ASN      4.0     5.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 218 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214C  TRP*     2.9    45.8    +      +       +      +
    215C  ARG      3.7     4.9    -      -       -      +
    217C  ARG*     1.3   101.0    -      -       -      +
    219C  LEU*     1.3    62.7    +      -       -      +
    221C  CYS*     3.5     1.6    +      -       -      +
    222C  ALA*     3.0    24.4    +      -       -      +
    240C  LEU*     3.7    49.2    -      -       +      +
    241C  ASN      3.6    18.8    -      -       -      -
    242C  ALA*     5.0     0.9    -      -       +      -
    253C  ARG*     3.3    31.4    -      -       +      -
    256C  PHE*     3.8    26.9    -      +       +      -
    257C  ALA*     4.4     9.2    -      -       +      -
    260C  LEU*     3.9     8.9    -      -       +      +
    265C  VAL*     5.8     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 219 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161B  LYS*     4.2    21.1    -      -       -      +
    215C  ARG*     3.1    30.2    +      -       -      +
    216C  ASP*     3.6     5.6    -      -       -      +
    217C  ARG      3.2     0.2    -      -       -      -
    218C  PHE*     1.3    79.9    -      -       -      +
    220C  PHE*     1.3    68.0    +      -       +      +
    222C  ALA*     3.3     7.5    +      -       -      +
    223C  GLU*     3.2    16.8    +      -       -      +
    256C  PHE*     4.3    10.3    -      -       +      -
    260C  LEU*     4.9     3.4    -      -       +      -
     58T  SER*     5.0     3.8    -      -       -      +
     59T  PRO      3.8    21.8    -      -       -      +
     60T  GLY      3.7    13.7    -      -       -      +
     61T  TYR*     3.9    22.4    -      -       +      +
     65T  ARG*     3.4    29.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 220 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157B  VAL*     5.3     2.9    -      -       +      -
    160B  ASP*     3.6    42.0    -      -       +      -
    161B  LYS*     3.9    29.2    -      -       +      -
    182C  ALA*     3.7    27.6    -      -       +      +
    183C  LYS*     3.9    17.7    -      -       +      -
    186C  GLY*     4.4     2.2    -      -       -      -
    216C  ASP*     3.1    26.9    +      -       +      +
    217C  ARG      4.1     1.6    -      -       -      +
    219C  LEU*     1.3    74.1    -      -       +      +
    221C  CYS*     1.3    60.7    +      -       -      +
    223C  GLU*     3.3     5.4    +      -       -      +
    224C  ALA*     3.0    27.4    +      -       -      +
     65T  ARG*     3.8    29.6    -      -       +      -
     66T  TYR*     3.5    34.1    -      +       -      +
----------------------------------------------------------
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Residues in contact with CYS 221 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182C  ALA      5.5     0.2    -      -       -      -
    185C  TYR*     3.9    13.7    -      -       -      -
    186C  GLY*     4.4     7.2    -      -       -      -
    189C  VAL*     4.1    13.0    -      -       +      +
    217C  ARG*     2.9    37.5    +      -       -      +
    218C  PHE      3.9     2.9    -      -       -      +
    220C  PHE*     1.3    77.8    -      -       -      +
    222C  ALA*     1.3    57.9    +      -       -      +
    224C  ALA*     3.4     6.4    +      -       -      +
    225C  LEU*     2.9    34.9    +      -       +      +
    238C  HIS*     3.8    37.5    -      -       +      -
    240C  LEU*     4.2     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 222 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218C  PHE      3.0    17.9    +      -       -      +
    219C  LEU      3.5     6.3    -      -       -      +
    220C  PHE      3.2     0.2    -      -       -      -
    221C  CYS*     1.3    74.7    -      -       -      +
    223C  GLU*     1.3    66.1    +      -       -      +
    225C  LEU*     3.4    12.1    +      -       -      +
    226C  TYR*     3.0    44.2    +      -       +      -
    240C  LEU*     6.1     0.8    -      -       -      +
    260C  LEU*     4.3    24.2    -      -       +      -
    262C  VAL*     4.5     6.7    -      -       +      -
     61T  TYR*     4.3     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 223 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219C  LEU      3.2    10.2    +      -       -      +
    220C  PHE*     3.3    11.0    +      -       -      +
    222C  ALA*     1.3    78.7    -      -       -      +
    224C  ALA*     1.3    62.6    +      -       -      +
    226C  TYR*     3.5     1.7    +      -       -      +
    227C  LYS*     3.1    24.3    +      -       +      +
     61T  TYR*     3.5    17.4    -      -       +      +
     62T  TYR      3.2    18.2    -      -       -      +
     63T  ASP*     4.0    13.3    -      -       -      +
     64T  GLY      3.6     3.7    +      -       -      +
     65T  ARG*     2.9    56.9    +      -       -      +
     66T  TYR*     3.1    29.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 224 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186C  GLY*     3.1    32.5    -      -       -      +
    189C  VAL*     4.2     4.3    -      -       +      -
    190C  TYR*     3.9    21.5    -      -       +      +
    220C  PHE      3.0    16.8    +      -       -      +
    221C  CYS      3.6     5.2    -      -       -      +
    222C  ALA      3.2     0.2    -      -       -      -
    223C  GLU*     1.3    77.8    -      -       -      +
    225C  LEU*     1.3    62.5    +      -       -      +
    227C  LYS*     3.2     6.1    +      -       -      +
    228C  ALA*     3.1    22.3    +      -       -      +
     66T  TYR*     4.1     8.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 225 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189C  VAL*     4.9     1.6    -      -       +      -
    193C  LEU*     3.8    26.9    -      -       +      +
    221C  CYS*     2.9    24.8    +      -       +      +
    222C  ALA*     3.7     7.6    -      -       -      +
    224C  ALA*     1.3    74.1    -      -       -      +
    226C  TYR*     1.3    84.4    +      -       +      +
    228C  ALA*     3.4     1.9    +      -       -      +
    229C  GLN*     3.0    32.5    +      -       -      +
    236C  LYS*     4.0    23.7    -      -       +      +
    237C  GLY*     4.6     2.0    -      -       -      +
    238C  HIS*     4.1    27.4    -      -       +      +
    240C  LEU*     5.6     2.5    -      -       +      -
    262C  VAL*     4.0    26.2    -      -       +      -
    263C  PRO*     5.0     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 226 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222C  ALA*     3.0    38.5    +      -       +      +
    223C  GLU      4.0     2.7    -      -       -      +
    225C  LEU*     1.3    88.4    -      -       +      +
    227C  LYS*     1.3    65.5    +      -       -      +
    229C  GLN*     3.8    18.1    -      -       -      +
    230C  ALA*     3.1    24.1    +      -       -      +
    260C  LEU*     2.7    28.3    +      -       +      -
    261C  GLY      3.3    10.6    -      -       -      -
    262C  VAL*     3.6     9.1    +      -       +      +
    263C  PRO*     6.0     0.9    -      -       +      -
     55T  HIS*     3.6    61.4    +      +       +      +
     56T  HIS*     6.1     1.1    -      -       +      -
     61T  TYR*     3.9     5.6    -      +       -      +
     63T  ASP*     5.1     0.4    -      -       -      +
     53U  ARG*     3.2    29.3    +      -       -      -
     62U  TYR*     5.7     3.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with LYS 227 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190C  TYR*     3.5    41.5    -      -       +      -
    223C  GLU*     3.1    16.3    +      -       +      +
    224C  ALA*     3.5     9.4    -      -       -      +
    226C  TYR*     1.3    77.4    -      -       -      +
    228C  ALA*     1.3    61.4    +      -       -      +
    230C  ALA*     3.4     5.5    +      -       -      +
    231C  GLU*     3.0    24.7    +      -       +      +
     45T  GLU*     2.9    32.0    +      -       -      -
     48T  HIS*     5.9     4.8    -      -       -      +
     52T  TYR*     6.2     0.4    -      -       -      +
     55T  HIS*     5.8     0.9    -      -       -      -
     64T  GLY*     5.6     5.0    -      -       -      +
     66T  TYR*     3.1    36.9    +      -       +      +
     67T  TRP*     4.5     2.2    -      -       -      +
     68T  THR*     4.6     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 228 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190C  TYR*     3.9    15.4    -      -       +      +
    193C  LEU*     3.6    32.5    -      -       +      -
    194C  ARG*     4.0    12.1    -      -       -      +
    224C  ALA      3.1    15.5    +      -       -      +
    225C  LEU      3.7     4.7    -      -       -      +
    227C  LYS*     1.3    79.9    -      -       -      +
    229C  GLN*     1.3    61.9    +      -       -      +
    231C  GLU*     3.3     2.7    +      -       -      +
    232C  THR*     3.0    31.0    +      -       -      +
    236C  LYS*     4.3     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 229 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225C  LEU*     3.0    20.7    +      -       -      +
    226C  TYR*     3.8    19.0    -      -       -      +
    227C  LYS      3.3     0.2    -      -       -      -
    228C  ALA*     1.3    77.6    -      -       -      +
    230C  ALA*     1.3    57.2    +      -       -      +
    233C  GLY*     2.8    30.1    +      -       -      -
    234C  GLU      3.4    21.3    -      -       -      +
    235C  ILE*     3.5    15.3    -      -       -      +
    236C  LYS*     3.1    28.9    +      -       +      +
     51U  VAL*     4.3    15.9    +      -       +      +
     52U  TYR*     6.1     1.8    -      -       -      +
     53U  ARG*     5.5     4.2    -      -       -      +
     62U  TYR*     3.8    27.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 230 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226C  TYR      3.1    17.9    +      -       -      +
    227C  LYS*     3.7     5.4    -      -       -      +
    229C  GLN*     1.3    78.2    -      -       -      +
    231C  GLU*     1.3    62.7    +      -       -      +
    233C  GLY*     4.1     0.5    +      -       -      -
     54T  GLU*     6.2     0.2    -      -       -      +
     55T  HIS*     5.4     9.4    -      -       +      +
     10U  LYS*     3.6    21.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 231 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190C  TYR*     2.6    29.9    +      -       -      -
    194C  ARG*     3.1    43.9    +      -       -      +
    227C  LYS*     3.0    18.4    +      -       +      +
    228C  ALA*     3.6     5.8    -      -       -      +
    229C  GLN      3.2     0.2    -      -       -      -
    230C  ALA*     1.3    80.7    -      -       -      +
    232C  THR*     1.3    61.4    +      -       +      +
      4U  TRP*     5.3     0.5    -      -       -      -
      5U  PRO      4.2     1.2    -      -       -      +
      6U  THR*     4.0    31.2    -      -       -      +
      9U  MET*     4.3    15.8    +      -       +      +
     10U  LYS*     3.7    14.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 232 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193C  LEU      4.3     0.2    -      -       -      +
    194C  ARG*     3.6    35.4    -      -       +      +
    228C  ALA      3.0    17.8    +      -       -      +
    231C  GLU*     1.3    81.8    -      -       +      +
    233C  GLY*     1.3    62.6    +      -       -      +
    234C  GLU*     3.2    17.1    +      -       -      +
    236C  LYS*     3.3    22.2    -      -       -      +
      9U  MET      4.5     8.3    -      -       -      +
     10U  LYS*     3.5     3.0    -      -       -      -
     11U  ARG*     2.8    32.4    +      -       +      +
     17U  TYR*     4.8    10.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 233 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229C  GLN      2.8    18.1    +      -       -      -
    230C  ALA*     4.1     0.8    +      -       -      -
    231C  GLU      3.6     1.4    -      -       -      -
    232C  THR*     1.3    73.7    -      -       -      +
    234C  GLU*     1.3    61.9    +      -       -      +
    235C  ILE      4.3     0.2    +      -       -      -
     10U  LYS*     3.9    16.7    -      -       -      +
     11U  ARG      4.4     3.4    -      -       -      +
     50U  PHE*     4.1    24.8    -      -       -      +
     51U  VAL*     4.5    15.5    +      -       -      +
----------------------------------------------------------
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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