Contacts of the helix formed by residues 228 - 249 (chain J) in PDB entry 1FPY


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 MET 228 (chain J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108J  ALA*     3.5    40.2    -      -       +      +
    111J  ALA*     4.2     7.2    -      -       +      -
    112J  GLU*     3.9    16.8    +      -       +      +
    124J  VAL*     3.0    16.9    +      -       +      -
    126J  PHE*     3.4    45.1    -      -       +      -
    226J  ASN      3.2     2.7    +      -       -      -
    227J  THR*     1.3    70.6    -      -       -      +
    229J  THR*     1.3    62.3    +      -       -      +
    231J  LYS*     3.3     2.8    +      -       -      +
    232J  ALA*     3.2    17.5    +      -       -      +
    371J  PHE*     3.5    31.3    -      -       +      +
    372J  ALA*     3.7    23.1    -      -       +      +
    375J  LEU*     4.0    12.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 229 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105J  ARG*     4.6    24.9    -      -       +      +
    108J  ALA*     3.5    33.4    +      -       +      +
    109J  LYS*     3.8    24.4    +      -       +      -
    112J  GLU*     3.1    23.5    +      -       -      +
    227J  THR*     3.0     1.4    +      -       -      -
    228J  MET*     1.3    71.8    -      -       -      +
    230J  LYS*     1.3    67.1    +      -       -      +
    231J  LYS      3.2     0.9    +      -       -      -
    232J  ALA*     3.2     7.6    +      -       -      +
    233J  ASP*     3.2    20.2    +      -       -      +
    368J  TYR*     4.0     4.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 230 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226J  ASN*     3.3    34.5    -      -       -      +
    227J  THR*     3.0    27.5    +      -       -      +
    229J  THR*     1.3    77.4    -      -       -      +
    231J  LYS*     1.3    57.9    +      -       -      +
    233J  ASP*     3.0    18.5    -      -       +      +
    234J  GLU*     3.0    36.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 231 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126J  PHE*     3.5    21.3    -      -       +      +
    128J  PRO*     3.3    38.1    -      -       +      -
    204J  LEU*     5.0     0.8    -      -       -      +
    223J  THR*     3.4    27.2    +      -       -      -
    224J  ARG      2.7    29.4    +      -       -      +
    225J  PHE*     4.3     1.6    -      -       -      +
    226J  ASN*     4.0    15.6    -      -       +      +
    227J  THR      2.9    11.6    +      -       -      +
    228J  MET      3.6     8.5    -      -       -      +
    230J  LYS*     1.3    74.1    -      -       -      +
    232J  ALA*     1.3    60.8    +      -       -      +
    234J  GLU*     3.0    31.0    +      -       +      +
    235J  ILE*     2.8    32.1    +      -       -      +
    371J  PHE*     4.1     4.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 232 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228J  MET      3.2     5.9    +      -       -      +
    229J  THR*     3.2     4.0    +      -       -      +
    231J  LYS*     1.3    78.3    -      -       -      +
    233J  ASP*     1.3    62.4    +      -       -      +
    235J  ILE*     3.4     5.1    +      -       -      +
    236J  GLN*     3.3    22.7    +      -       -      +
    367J  PRO*     3.4    22.8    -      -       +      +
    368J  TYR*     3.2    38.4    +      -       +      +
    371J  PHE*     3.6    19.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 233 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73J  THR*     4.4     5.0    -      -       -      +
     88J  ARG*     3.4    15.4    +      -       -      +
    105J  ARG*     2.9    37.0    +      -       -      -
    229J  THR*     3.2    13.7    +      -       -      +
    230J  LYS*     3.0    22.2    +      -       +      +
    232J  ALA*     1.3    76.7    -      -       -      +
    234J  GLU*     1.3    59.2    +      -       +      +
    236J  GLN*     2.9    24.4    +      -       -      +
    237J  ILE*     3.0    19.5    +      -       +      +
    368J  TYR*     2.6    32.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 234 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203J  GLY      4.3    12.3    -      -       -      +
    204J  LEU*     3.5    41.3    -      -       +      +
    205J  VAL      5.1     1.2    +      -       -      -
    224J  ARG      3.8     5.7    -      -       -      +
    226J  ASN*     3.4    23.1    +      -       -      +
    230J  LYS*     3.1    18.9    -      -       +      +
    231J  LYS*     3.0    38.3    +      -       +      +
    233J  ASP*     1.3    81.2    -      -       +      +
    235J  ILE*     1.3    53.9    +      -       -      +
    237J  ILE*     3.2     6.3    +      -       +      +
    238J  TYR*     2.7    35.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 235 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128J  PRO*     4.2    13.0    -      -       +      -
    130J  PRO*     3.9    16.6    -      -       +      -
    223J  THR*     5.6     1.3    -      -       -      +
    231J  LYS*     2.8    22.3    +      -       -      +
    232J  ALA*     3.4     8.7    -      -       -      +
    233J  ASP      3.0     0.4    -      -       -      -
    234J  GLU*     1.3    74.9    -      -       -      +
    236J  GLN*     1.3    66.7    +      -       -      +
    238J  TYR*     3.1    10.9    +      -       +      +
    239J  LYS*     2.9    41.4    +      -       +      +
    268J  MET*     3.4    33.7    -      -       +      -
    363J  PRO      6.0     0.2    -      -       -      +
    367J  PRO*     3.3    25.6    -      -       +      -
    371J  PHE*     4.2    16.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 236 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22J  THR*     3.1    32.2    +      -       -      +
     26J  GLY      2.9    27.5    +      -       -      +
     28J  GLU*     3.6    25.2    -      -       -      +
     88J  ARG*     3.6    19.3    -      -       -      +
    232J  ALA      3.4    13.7    -      -       -      +
    233J  ASP      2.9     7.6    +      -       -      +
    235J  ILE*     1.3    77.4    -      -       -      +
    237J  ILE*     1.3    63.3    +      -       -      +
    239J  LYS*     3.4    18.6    +      -       -      +
    240J  TYR*     3.0    22.7    +      -       -      +
    367J  PRO*     3.8    19.2    -      -       -      +
    368J  TYR*     4.2     7.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 237 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28J  GLU*     5.3     2.2    -      -       -      +
     73J  THR      6.0     1.6    -      -       -      +
     75J  VAL*     5.3     7.0    -      -       +      -
     88J  ARG*     4.0    19.1    -      -       -      +
    199J  MET*     5.2     0.9    -      -       -      +
    202J  MET*     4.0    51.6    -      -       +      +
    204J  LEU*     3.6    23.8    -      -       +      -
    233J  ASP*     3.0    19.9    +      -       +      +
    234J  GLU*     3.5    12.1    -      -       +      +
    236J  GLN*     1.3    75.4    -      -       -      +
    238J  TYR*     1.3    54.1    +      -       -      +
    240J  TYR*     3.0     8.5    +      -       -      +
    241J  VAL*     2.8    37.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 238 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130J  PRO*     2.9    43.6    +      -       +      -
    132J  PHE*     3.5     6.3    -      +       -      -
    199J  MET*     3.2    33.0    -      -       +      -
    204J  LEU*     4.2     7.2    -      -       +      +
    221J  VAL*     2.9    48.9    +      -       +      +
    223J  THR*     4.3    17.5    -      -       +      -
    234J  GLU      2.7    17.1    +      -       -      +
    235J  ILE*     3.1    16.6    -      -       +      +
    237J  ILE*     1.3    74.2    -      -       -      +
    239J  LYS*     1.3    57.1    +      -       +      +
    241J  VAL*     3.1     3.0    +      -       -      +
    242J  VAL*     2.8    46.6    +      -       +      +
    255J  PHE*     3.7    21.3    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 239 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    468D  VAL*     3.4    26.8    +      -       -      +
     26J  GLY*     5.0     5.7    +      -       -      -
     27J  LYS*     6.1     1.6    -      -       -      +
    130J  PRO*     6.2     1.1    -      -       +      -
    235J  ILE*     2.9    39.2    +      -       +      +
    236J  GLN*     3.8    20.8    +      -       -      +
    238J  TYR*     1.3    75.6    -      -       +      +
    240J  TYR*     1.3    58.9    +      -       -      +
    242J  VAL*     3.7     0.2    -      -       -      +
    243J  HIS*     2.7    43.5    +      -       +      +
    255J  PHE*     3.6    44.9    -      -       +      -
    268J  MET*     6.3     0.4    -      -       -      -
    363J  PRO*     3.3    25.7    +      -       -      -
    364J  ALA      5.0     2.0    +      -       -      -
    365J  ALA      4.3     8.3    +      -       -      -
    367J  PRO*     5.0     0.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 240 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20J  ARG*     3.4    25.5    +      -       -      +
     28J  GLU*     4.1     7.2    -      -       -      +
     77J  ASP*     2.6    32.0    +      -       -      -
     79J  PHE*     3.4    26.3    -      +       -      -
     80J  PHE*     3.2    20.6    -      -       -      -
    202J  MET*     4.4    17.5    -      -       +      -
    236J  GLN      3.0    14.3    +      -       -      +
    237J  ILE*     3.3    10.1    -      -       -      +
    239J  LYS*     1.3    77.8    -      -       -      +
    241J  VAL*     1.3    65.4    +      -       -      +
    243J  HIS*     3.1     2.9    +      -       -      -
    244J  ASN*     2.9    51.9    +      -       -      +
    182K  VAL*     4.2    18.6    -      -       +      -
    183K  PRO*     3.5    21.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 241 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79J  PHE*     3.8     9.2    -      -       +      -
    195J  MET*     3.6    28.9    -      -       -      +
    198J  VAL*     3.6    25.8    -      -       +      -
    199J  MET*     3.7    18.4    -      -       +      -
    202J  MET*     3.5    31.2    -      -       -      -
    237J  ILE*     2.8    23.9    +      -       +      +
    238J  TYR      3.5     6.1    -      -       -      +
    240J  TYR*     1.3    71.1    -      -       -      +
    242J  VAL*     1.3    60.0    +      -       -      +
    245J  VAL*     2.8    34.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 242 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132J  PHE*     3.9    23.8    -      -       +      -
    195J  MET*     3.3    23.3    -      -       +      +
    199J  MET*     3.6    19.1    -      -       +      -
    238J  TYR*     2.8    41.8    +      -       +      +
    239J  LYS      3.7     0.2    -      -       -      +
    241J  VAL*     1.3    72.7    -      -       -      +
    243J  HIS*     1.3    66.2    +      -       -      +
    246J  ALA*     3.0    26.7    +      -       -      +
    253J  ALA*     3.8    18.2    -      -       +      -
    255J  PHE*     3.6    21.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 243 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466D  TYR      4.9     0.4    +      -       -      -
    467D  SER      4.4     1.5    +      -       -      -
    468D  VAL      3.4    25.4    +      -       -      -
     27J  LYS*     3.9    20.4    +      -       -      -
    239J  LYS*     2.7    30.1    +      -       +      +
    240J  TYR*     3.6     4.6    -      -       -      +
    242J  VAL*     1.3    73.4    -      -       -      +
    244J  ASN*     1.3    58.5    +      -       -      +
    246J  ALA*     3.5     3.3    -      -       -      +
    247J  HIS*     3.1    24.9    +      -       -      +
    252J  THR*     5.7     0.2    -      -       -      -
    253J  ALA*     3.2    38.2    +      -       +      -
    254J  THR*     4.5     1.8    -      -       -      -
    255J  PHE*     3.7    19.0    -      +       -      -
    171K  HIS*     3.8    21.6    -      +       -      -
    182K  VAL*     6.3     0.4    -      -       -      +
    183K  PRO      5.2     0.2    -      -       -      +
    184K  PRO*     4.0    23.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 244 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79J  PHE*     3.5    33.3    -      -       +      +
     80J  PHE*     5.9     0.4    -      -       -      -
    240J  TYR*     2.9    53.8    +      -       -      +
    243J  HIS*     1.3    73.2    -      -       -      +
    245J  VAL*     1.3    66.4    +      -       -      +
    246J  ALA      3.1     1.3    -      -       -      -
    247J  HIS*     3.2     9.5    +      -       -      +
    248J  ARG*     2.8    27.4    +      -       -      +
    183K  PRO*     3.2    29.1    -      -       -      +
    184K  PRO*     3.7    11.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 245 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79J  PHE*     3.6    22.2    -      -       +      -
    191J  ILE*     4.2     4.9    -      -       +      +
    194J  GLU*     4.0    13.0    -      -       +      +
    195J  MET*     3.6    29.4    -      -       +      +
    198J  VAL*     4.2    14.6    -      -       +      -
    241J  VAL*     2.8    35.2    +      -       +      +
    244J  ASN*     1.3    70.9    -      -       -      +
    246J  ALA*     1.3    64.3    +      -       -      +
    248J  ARG*     3.1     9.7    +      -       -      +
    249J  PHE*     3.0    48.0    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 246 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134J  LEU*     3.8    28.3    -      -       +      -
    191J  ILE*     5.1     3.1    -      -       -      -
    195J  MET*     4.0     5.3    -      -       +      +
    242J  VAL      3.0    17.9    +      -       -      +
    243J  HIS      3.5     5.4    -      -       -      +
    245J  VAL*     1.3    77.0    -      -       -      +
    247J  HIS*     1.3    57.0    +      -       -      +
    249J  PHE*     2.9    10.3    +      -       -      -
    251J  LYS*     2.7    40.2    +      -       +      +
    253J  ALA*     3.8    15.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 247 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243J  HIS      3.1    14.2    +      -       -      +
    244J  ASN*     3.4    15.3    -      -       -      +
    246J  ALA*     1.3    79.3    -      -       -      +
    248J  ARG*     1.3    61.3    +      -       +      +
    250J  GLY*     2.8    25.3    +      -       -      -
    251J  LYS      3.3    14.1    +      -       -      +
    252J  THR*     6.1     0.2    -      -       -      -
    169K  LYS*     4.9    19.6    -      -       +      +
    171K  HIS*     5.9     3.2    -      -       +      -
    184K  PRO*     4.1    26.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 248 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78J  PRO      5.5     2.2    +      -       -      -
     79J  PHE*     4.1    29.3    -      -       +      +
    194J  GLU*     3.3    25.3    +      -       -      -
    198J  VAL*     5.5     1.8    -      -       -      +
    244J  ASN*     2.8    14.7    +      -       +      +
    245J  VAL*     3.5    16.5    -      -       -      +
    247J  HIS*     1.3    82.4    -      -       +      +
    249J  PHE*     1.3    76.1    +      -       +      +
    250J  GLY      3.1     1.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 249 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190J  ASP*     4.5     7.9    -      -       +      -
    191J  ILE*     3.8    45.8    -      -       +      -
    194J  GLU*     3.7    28.9    -      -       +      -
    245J  VAL*     3.0    30.8    +      -       +      +
    246J  ALA*     2.9     9.3    +      -       -      +
    248J  ARG*     1.3    97.6    -      -       +      +
    250J  GLY*     1.3    63.3    +      -       -      +
    251J  LYS*     3.1    11.6    +      -       +      +
----------------------------------------------------------
 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