Contacts of the helix formed by residues 3 - 28 (chain C) in PDB entry 1RM1


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 ASN 3 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  SER*     5.0     4.9    +      -       -      -
     87B  VAL*     4.7     7.8    -      -       -      +
      2C  SER*     1.3    79.3    -      -       -      +
      4C  ALA*     1.3    65.5    +      -       -      +
      5C  GLU*     3.5    13.8    +      -       -      +
      6C  ALA*     2.8    35.3    -      -       +      +
      7C  SER*     3.0    24.8    +      -       -      -
     52C  THR*     3.0     7.1    +      -       -      +
    273C  ASP      3.6    19.5    -      -       -      +
    274C  TYR*     4.1    29.0    -      -       +      +
    275C  THR      4.3     4.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 4 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  SER      4.0     2.2    +      -       -      -
      3C  ASN*     1.3    71.6    +      -       -      +
      5C  GLU*     1.3    68.8    +      -       -      +
      7C  SER*     3.0     9.1    +      -       -      -
      8C  ARG*     2.8    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 5 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  ASN      4.2    12.1    -      -       -      +
     56B  THR*     3.2    12.1    +      -       -      -
     57B  GLN*     2.7    32.2    +      -       -      +
     58B  SER*     3.0    25.5    +      -       -      +
      3C  ASN*     3.4    10.4    -      -       -      +
      4C  ALA*     1.3    78.8    -      -       -      +
      6C  ALA*     1.3    56.1    +      -       -      +
      8C  ARG*     3.1     9.6    +      -       -      +
      9C  VAL*     2.8    33.3    +      -       +      +
    275C  THR*     2.9    35.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 6 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3C  ASN*     2.8    28.9    -      -       +      +
      4C  ALA      3.3     0.2    -      -       -      -
      5C  GLU*     1.3    71.3    -      -       -      +
      7C  SER*     1.3    63.1    +      -       -      +
      9C  VAL*     3.2     0.5    +      -       -      +
     10C  TYR*     2.9    33.3    +      -       +      -
     52C  THR*     4.6     9.2    -      -       +      -
    273C  ASP*     3.7    25.6    -      -       +      +
    274C  TYR*     4.2     0.2    -      -       -      -
    275C  THR*     3.8    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 7 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  SER      5.2     0.2    +      -       -      -
      3C  ASN      3.0     8.4    +      -       -      -
      4C  ALA*     3.0    13.0    +      -       -      -
      6C  ALA*     1.3    76.3    -      -       -      +
      8C  ARG*     1.3    64.7    +      -       -      +
     10C  TYR*     3.2     1.6    +      -       -      +
     11C  GLU*     3.0    34.7    +      -       -      +
     52C  THR*     2.5    32.8    +      -       -      -
     53C  THR*     2.6    25.8    +      -       -      -
     54C  PHE*     4.4     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 8 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  ASN*     3.6    34.6    +      -       -      +
      4C  ALA      2.8    12.6    +      -       -      +
      5C  GLU*     3.4    11.7    -      -       -      +
      7C  SER*     1.3    76.1    -      -       -      +
      9C  VAL*     1.3    63.9    +      -       +      +
     11C  GLU*     3.3     6.7    +      -       -      +
     12C  ILE*     2.9    43.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 9 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  THR*     3.8    17.2    -      -       +      +
     52B  LEU*     4.2    20.9    -      -       +      -
     55B  ASN*     3.6    31.4    -      -       +      +
     56B  THR*     5.1     1.6    -      -       -      -
      5C  GLU*     2.8    24.1    +      -       +      +
      6C  ALA      3.7     4.3    -      -       -      +
      8C  ARG*     1.3    71.8    -      -       +      +
     10C  TYR*     1.3    64.0    +      -       +      +
     12C  ILE*     3.8     3.6    -      -       -      +
     13C  ILE*     3.0    52.5    +      -       +      +
    275C  THR*     4.0    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 10 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14B  THR*     3.9     6.0    +      -       -      -
     15B  ILE*     3.5    42.8    +      -       +      +
      6C  ALA*     2.9    22.6    +      -       +      +
      7C  SER      3.6     4.3    -      -       -      +
      9C  VAL*     1.3    86.4    -      -       +      +
     11C  GLU*     1.3    59.8    +      -       -      +
     13C  ILE*     3.2     4.8    +      -       +      +
     14C  VAL*     2.9    31.4    +      -       -      +
     46C  LEU*     4.1    12.6    -      -       +      -
     51C  VAL*     4.0    14.4    -      -       +      -
     52C  THR*     4.4     2.9    -      -       +      -
     54C  PHE*     3.7    30.3    -      +       +      -
     56C  TRP*     4.9     0.4    -      -       -      -
    266C  VAL*     3.4    25.8    -      -       +      +
    273C  ASP*     2.5    34.8    +      -       +      -
    275C  THR*     4.4    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 11 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  SER*     3.0    21.9    +      -       -      +
      8C  ARG*     3.8     5.4    -      -       -      +
     10C  TYR*     1.3    73.2    -      -       -      +
     12C  ILE*     1.3    67.2    +      -       +      +
     14C  VAL*     3.5     2.0    +      -       -      +
     15C  GLU*     3.2    30.9    +      -       +      +
     53C  THR      4.4     1.7    -      -       -      +
     54C  PHE*     3.4    10.7    -      -       +      -
     55C  SER*     2.6    49.6    +      -       -      -
     56C  TRP*     3.6    30.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 12 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  THR*     3.8    17.7    -      -       +      +
     55B  ASN*     3.6    34.8    -      -       +      +
      8C  ARG*     2.9    50.2    +      -       +      +
      9C  VAL*     3.8     4.5    -      -       -      +
     11C  GLU*     1.3    77.0    -      -       +      +
     13C  ILE*     1.3    58.0    +      -       -      +
     15C  GLU*     4.0     3.4    -      -       -      +
     16C  SER*     2.9    46.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 13 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  ILE*     3.5    30.5    -      -       +      -
     44B  PHE*     4.0    15.0    -      -       +      -
     47B  VAL*     4.1    10.8    -      -       +      -
     48B  VAL*     4.1    28.9    -      -       +      +
     51B  THR*     3.6    20.6    -      -       -      +
     52B  LEU*     5.8     0.2    -      -       +      -
      9C  VAL*     3.0    42.8    +      -       +      +
     10C  TYR*     3.2     7.2    +      -       +      +
     12C  ILE*     1.3    77.6    -      -       -      +
     14C  VAL*     1.3    56.0    +      -       -      +
     16C  SER*     3.3     0.9    +      -       -      -
     17C  VAL*     2.8    49.9    +      -       +      +
     42C  TRP*     4.2     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 14 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  ILE*     4.1    12.3    -      -       +      -
     10C  TYR      2.9    21.3    +      -       -      +
     11C  GLU      3.7     7.2    -      -       -      +
     13C  ILE*     1.3    75.1    -      -       -      +
     15C  GLU*     1.3    80.4    +      -       -      +
     17C  VAL      3.5     0.2    +      -       -      -
     18C  VAL*     3.1    29.8    +      -       -      +
     39C  LYS*     4.4    13.9    -      -       +      -
     42C  TRP*     3.6    29.8    -      -       +      -
     43C  GLN*     4.5     4.7    -      -       +      +
     46C  LEU*     4.1    17.0    -      -       +      -
     56C  TRP*     4.2    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 15 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11C  GLU*     3.2    19.5    +      -       +      +
     12C  ILE*     4.0     4.3    -      -       -      +
     14C  VAL*     1.3    88.3    -      -       +      +
     16C  SER*     1.3    62.8    +      -       -      +
     18C  VAL*     3.6     4.4    +      -       -      +
     19C  ASN*     3.2    32.7    +      -       -      +
     39C  LYS*     3.2    39.8    +      -       -      +
     43C  GLN*     4.0     6.1    -      -       -      +
     56C  TRP*     5.4     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 16 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  VAL*     3.7    21.8    -      -       -      -
     51B  THR*     5.2     0.4    +      -       -      -
     12C  ILE*     2.9    33.7    +      -       -      +
     15C  GLU*     1.3    76.9    -      -       -      +
     17C  VAL*     1.3    58.0    +      -       -      +
     19C  ASN*     3.3     9.0    +      -       -      +
     20C  GLU*     2.7    40.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 17 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40B  VAL*     4.1    29.6    -      -       +      +
     43B  THR*     4.7     1.6    -      -       +      -
     44B  PHE*     4.0    14.6    -      -       +      -
     47B  VAL*     3.8    25.1    -      -       +      -
     13C  ILE*     2.8    29.2    +      -       +      +
     16C  SER*     1.3    74.1    -      -       -      +
     18C  VAL*     1.3    62.2    +      -       -      +
     20C  GLU*     3.1     8.0    +      -       -      +
     21C  VAL*     3.0    31.0    +      -       +      +
     38C  LEU*     6.1     0.9    -      -       +      -
     42C  TRP*     3.6    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 18 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14C  VAL      3.1    19.3    +      -       -      +
     15C  GLU*     3.8     5.6    -      -       -      +
     16C  SER      3.3     0.2    -      -       -      -
     17C  VAL*     1.3    76.4    -      -       +      +
     19C  ASN*     1.3    59.9    +      -       -      +
     21C  VAL*     3.6     7.1    -      -       -      +
     22C  ARG*     3.2    36.6    +      -       -      +
     35C  LEU*     3.4    35.2    -      -       +      +
     36C  GLN*     4.5     2.5    -      -       -      +
     38C  LEU*     5.7     2.9    -      -       +      -
     39C  LYS*     3.9    47.6    -      -       +      +
     42C  TRP*     4.8     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 19 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  GLU*     3.2    21.4    +      -       -      +
     16C  SER*     3.7     9.8    -      -       -      +
     17C  VAL      3.2     0.6    -      -       -      -
     18C  VAL*     1.3    77.7    -      -       -      +
     20C  GLU*     1.3    69.7    +      -       -      +
     21C  VAL      3.5     0.2    +      -       -      -
     22C  ARG*     2.9    40.8    +      -       -      +
     23C  GLU*     4.6     2.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 20 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  THR*     3.2    24.0    +      -       +      +
     46B  LYS*     3.8    21.9    +      -       -      +
     47B  VAL*     3.8    17.5    -      -       +      +
     50B  GLU*     6.0     0.2    -      -       -      -
     16C  SER*     2.7    30.5    +      -       -      +
     17C  VAL      3.1     1.1    +      -       -      +
     19C  ASN*     1.3    83.0    -      -       -      +
     21C  VAL*     1.3    58.6    +      -       -      +
     23C  GLU*     4.4    10.1    +      -       -      +
     24C  ASP*     3.8     9.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 21 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  ARG*     4.8     0.7    -      -       -      +
     40B  VAL*     4.0    28.3    -      -       +      -
     43B  THR*     3.8    27.6    -      -       +      +
     17C  VAL*     3.0    26.0    +      -       +      +
     18C  VAL*     3.6     4.0    -      -       -      +
     20C  GLU*     1.3    76.7    -      -       -      +
     22C  ARG*     1.3    69.4    +      -       -      +
     23C  GLU      3.0     2.9    -      -       -      -
     24C  ASP*     2.8    24.0    +      -       +      +
     25C  PHE*     3.0    22.7    +      -       +      -
     35C  LEU*     3.5    27.1    -      -       +      -
     38C  LEU*     5.4     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 22 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18C  VAL*     3.2    23.3    +      -       -      +
     19C  ASN*     2.9    37.3    +      -       -      +
     20C  GLU      3.5     1.4    -      -       -      -
     21C  VAL*     1.3    77.3    -      -       -      +
     23C  GLU*     1.3    61.6    +      -       -      +
     25C  PHE*     3.4     3.0    +      -       +      +
     26C  GLU*     3.2    42.9    +      -       +      +
     32C  GLU*     2.9    42.3    +      -       -      +
     35C  LEU*     3.5    15.0    -      -       +      +
     36C  GLN*     3.7    11.1    -      -       -      +
     39C  LYS*     5.9     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 23 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19C  ASN      4.6     2.3    +      -       -      +
     20C  GLU      4.4    11.1    +      -       -      +
     21C  VAL      3.0     0.4    -      -       -      -
     22C  ARG*     1.3    81.5    -      -       -      +
     24C  ASP*     1.3    61.8    +      -       -      +
     26C  GLU*     3.8    14.7    +      -       -      +
     27C  ASN*     3.2    25.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 24 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36B  LEU*     4.0    17.7    -      -       +      +
     39B  ARG*     2.9    43.3    +      -       +      +
     43B  THR*     4.5     1.6    +      -       -      -
     20C  GLU      3.8    15.5    -      -       -      +
     21C  VAL*     2.8    12.3    +      -       +      +
     23C  GLU*     1.3    82.0    -      -       -      +
     25C  PHE*     1.3    65.7    +      -       -      +
     27C  ASN*     3.3     9.4    +      -       -      +
     28C  ALA*     3.0    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 25 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26B  LEU*     5.5     0.9    -      -       +      -
     32B  ILE*     4.4     8.3    -      -       +      -
     36B  LEU*     4.0    25.8    -      -       +      -
     40B  VAL*     3.9    17.0    -      -       +      -
     21C  VAL*     3.0    30.0    +      -       +      -
     22C  ARG*     3.6     9.9    -      -       +      +
     24C  ASP*     1.3    75.1    -      -       -      +
     26C  GLU*     1.3    62.4    +      -       +      +
     28C  ALA*     2.8    16.6    +      -       -      +
     29C  GLY      3.0    10.2    +      -       -      -
     30C  ILE*     3.0    44.2    +      -       +      +
     31C  ASP      4.4     3.1    -      -       -      +
     34C  THR*     4.0     7.4    -      -       +      -
     35C  LEU*     3.5    52.5    -      -       +      -
     38C  LEU*     4.0    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 26 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22C  ARG*     3.2    39.5    +      -       +      +
     23C  GLU*     3.9    13.8    -      -       -      +
     25C  PHE*     1.3    77.2    -      -       +      +
     27C  ASN*     1.3    63.2    +      -       -      +
     28C  ALA      3.2     0.5    +      -       -      -
     29C  GLY*     3.3    11.6    +      -       -      +
     30C  ILE      3.9     6.7    +      -       -      +
     32C  GLU*     5.1     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 27 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  GLU*     3.2    17.1    +      -       +      +
     24C  ASP*     3.6    12.1    -      -       -      +
     25C  PHE      3.1     0.6    -      -       -      -
     26C  GLU*     1.3    78.5    -      -       -      +
     28C  ALA*     1.3    58.1    +      -       -      +
     29C  GLY      3.5     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 28 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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     33B  GLU*     6.5     0.7    -      -       +      -
     36B  LEU*     4.1    15.3    -      -       +      -
     24C  ASP      3.0    15.3    +      -       -      +
     25C  PHE      2.8     6.3    +      -       -      +
     27C  ASN*     1.3    80.8    -      -       -      +
     29C  GLY*     1.3    57.0    +      -       -      +
     30C  ILE*     3.2    22.6    +      -       +      +
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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) +   -    +    +   +   +    +    -
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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