Contacts of the helix formed by residues 84 - 110 (chain D) in PDB entry 1ZMC


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 84 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75C  GLY*     2.8    19.8    +      -       -      +
     77C  GLU*     3.0    40.4    +      -       +      +
     83D  LEU*     1.3    74.0    -      -       -      +
     85D  LEU*     1.3    63.4    +      -       -      +
     86D  ASP*     3.3    13.6    +      -       -      +
     87D  LYS*     3.1    33.1    +      -       -      +
     88D  MET*     3.1    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 85 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83D  LEU*     3.6    19.6    +      -       +      -
     84D  ASN*     1.3    73.8    -      -       -      +
     86D  ASP*     1.3    64.3    +      -       -      +
     88D  MET*     3.7     9.8    -      -       +      +
     89D  MET*     3.0    44.8    +      -       +      +
    174D  LEU      3.7     8.5    -      -       -      +
    175D  LYS      3.3    35.9    -      -       -      +
    176D  LYS*     3.7    16.2    -      -       -      -
    177D  VAL*     3.9     6.1    -      -       +      +
    197D  TRP*     4.0    24.0    -      -       +      -
    200D  LEU*     4.3    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 86 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84D  ASN*     3.2    10.0    +      -       -      +
     85D  LEU*     1.3    77.4    -      -       -      +
     87D  LYS*     1.3    59.3    +      -       -      +
     89D  MET*     3.3     7.9    +      -       -      +
     90D  GLU*     3.0    26.2    +      -       -      +
    175D  LYS*     5.4     9.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 87 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72C  ALA      3.5    19.7    -      -       -      +
     73C  SER*     3.8    30.8    -      -       -      +
     75C  GLY*     3.7     7.2    -      -       -      +
     77C  GLU*     5.6     0.2    -      -       -      +
     84D  ASN*     3.1    32.9    +      -       -      +
     86D  ASP*     1.3    77.5    -      -       -      +
     88D  MET*     1.3    65.6    +      -       -      +
     90D  GLU*     3.0    44.9    +      -       -      +
     91D  GLN      3.1    10.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 88 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74C  ARG*     3.0    33.9    -      -       -      +
     75C  GLY*     3.7     1.2    -      -       -      -
     76C  ILE*     4.1    12.6    -      -       +      -
     56D  LEU*     4.4    13.0    -      -       +      +
     59D  ASN*     3.6    42.1    +      -       +      +
     60D  SER*     4.1     7.6    -      -       -      -
     63D  TYR*     4.1     6.5    -      -       +      -
     83D  LEU*     3.5    27.8    -      -       +      -
     84D  ASN      3.1    10.8    +      -       -      +
     85D  LEU*     3.7    14.8    -      -       +      +
     87D  LYS*     1.3    78.6    -      -       -      +
     89D  MET*     1.3    62.3    +      -       -      +
     90D  GLU      3.3     0.3    +      -       -      -
     91D  GLN*     3.4    11.1    +      -       -      +
     92D  LYS*     3.4    10.4    +      -       -      +
    200D  LEU*     4.2    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 89 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56D  LEU*     4.0    19.1    -      -       +      -
     85D  LEU*     3.0    33.9    +      -       +      +
     86D  ASP*     3.5     6.7    -      -       -      +
     87D  LYS      3.2     0.2    -      -       -      -
     88D  MET*     1.3    73.6    -      -       -      +
     90D  GLU*     1.3    60.0    +      -       -      +
     92D  LYS*     3.2    21.3    -      -       -      +
     93D  SER*     3.0    31.7    +      -       -      +
    172D  LEU      3.3    28.0    -      -       -      +
    173D  SER*     4.4     4.7    -      -       -      -
    174D  LEU      3.9    13.9    -      -       -      +
    197D  TRP*     3.8    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 90 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86D  ASP      3.0    13.1    +      -       -      +
     87D  LYS*     3.0    45.8    +      -       -      +
     89D  MET*     1.3    76.8    -      -       -      +
     91D  GLN*     1.3    67.7    +      -       -      +
     93D  SER*     3.0     7.6    +      -       -      +
     94D  THR*     2.8    36.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 91 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73C  SER*     3.6    26.2    +      -       -      +
     74C  ARG*     4.0    18.8    -      -       +      +
    395C  LYS      4.4     0.8    +      -       -      -
    396C  THR      3.4    19.1    +      -       -      +
    398C  ALA*     3.7    22.6    -      -       +      +
     55D  ALA*     3.8    11.6    -      -       -      +
     59D  ASN*     2.9    30.0    +      -       -      +
     87D  LYS      3.1     4.0    +      -       -      +
     88D  MET      3.6     9.2    -      -       -      +
     90D  GLU*     1.3    78.0    -      -       -      +
     92D  LYS*     1.3    63.1    +      -       -      +
     94D  THR*     3.3     8.8    +      -       -      +
     95D  ALA*     3.1    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 92 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52D  PRO*     3.8    39.9    -      -       +      +
     55D  ALA*     4.1     9.5    -      -       +      +
     56D  LEU*     3.9    26.7    -      -       +      -
     59D  ASN*     5.3     0.2    -      -       -      +
     88D  MET      3.4     6.6    +      -       -      +
     89D  MET*     3.2    29.7    -      -       -      +
     91D  GLN*     1.3    85.3    +      -       -      +
     93D  SER*     1.3    74.8    +      -       -      +
     95D  ALA*     3.2     5.1    +      -       -      +
     96D  VAL*     3.0    28.1    +      -       +      +
    172D  LEU*     3.0    27.0    +      -       +      +
    173D  SER*     3.1    17.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 93 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89D  MET*     3.0    13.5    +      -       -      +
     90D  GLU*     3.0    10.9    +      -       -      -
     92D  LYS*     1.3    89.8    +      -       -      +
     94D  THR*     1.3    57.9    +      -       -      +
     96D  VAL*     3.5     6.8    +      -       -      +
     97D  LYS*     2.9    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 94 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90D  GLU*     2.8    31.2    +      -       -      +
     91D  GLN*     3.3    13.9    -      -       -      +
     93D  SER*     1.3    74.9    -      -       -      +
     95D  ALA*     1.3    66.9    +      -       -      +
     97D  LYS*     3.3     6.3    +      -       -      +
     98D  ALA*     3.0    25.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395C  LYS*     3.9    27.3    -      -       +      +
    396C  THR*     4.0    17.0    -      -       -      +
     51D  ILE*     4.9     4.3    -      -       +      -
     55D  ALA*     5.2     2.9    -      -       +      -
     91D  GLN*     3.1    16.5    +      -       -      +
     92D  LYS*     3.6     9.4    -      -       -      +
     94D  THR*     1.3    78.1    -      -       -      +
     96D  VAL*     1.3    64.9    +      -       -      +
     98D  ALA*     3.2     7.4    +      -       -      +
     99D  LEU*     3.0    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 96 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46D  LEU*     3.5    37.6    -      -       +      +
     47D  ASN*     4.3    14.6    -      -       -      +
     51D  ILE*     4.1     7.6    -      -       +      -
     52D  PRO*     3.9    26.7    -      -       +      -
     92D  LYS*     3.0    23.3    +      -       +      +
     93D  SER*     3.7     7.6    -      -       -      +
     95D  ALA*     1.3    78.0    -      -       -      +
     97D  LYS*     1.3    57.8    +      -       -      +
     99D  LEU      3.4     0.3    +      -       -      -
    100D  THR*     2.9    43.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 97 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93D  SER      2.9    17.9    +      -       -      +
     94D  THR*     3.8     6.7    -      -       -      +
     95D  ALA      3.2     0.4    -      -       -      -
     96D  VAL*     1.3    75.7    -      -       -      +
     98D  ALA*     1.3    66.3    +      -       -      +
    100D  THR*     2.7    23.3    +      -       -      +
    101D  GLY*     2.9     9.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 98 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395C  LYS*     3.5    32.5    -      -       -      +
     94D  THR*     3.0    19.5    +      -       +      +
     95D  ALA      3.6     3.4    -      -       -      +
     97D  LYS*     1.3    79.6    -      -       -      +
     99D  LEU*     1.3    58.2    +      -       -      +
    101D  GLY*     3.3     2.6    +      -       -      -
    102D  GLY*     2.9    23.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 99 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    389C  ALA      5.6     1.8    -      -       -      +
    390C  ALA*     5.1    10.1    -      -       -      +
    391C  ASN      5.0     0.9    -      -       -      +
    392C  SER*     4.2    25.4    -      -       -      +
    395C  LYS*     4.0    33.4    -      -       +      -
    396C  THR*     4.4     6.1    -      -       -      +
     46D  LEU*     3.7    18.4    -      -       +      -
     51D  ILE*     3.9    30.7    -      -       +      -
     95D  ALA      3.0    14.6    +      -       -      +
     98D  ALA*     1.3    74.4    -      -       -      +
    100D  THR*     1.3    59.5    +      -       -      +
    102D  GLY*     2.8    17.8    +      -       -      +
    103D  ILE*     3.1    17.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 100 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40D  THR*     3.1    37.7    +      -       +      +
     41D  LEU*     4.3     7.0    +      -       -      +
     46D  LEU*     3.4    23.1    -      -       +      -
     47D  ASN*     3.6     8.3    -      -       -      +
     96D  VAL*     2.9    29.9    +      -       +      +
     97D  LYS*     2.7    27.1    +      -       -      +
     99D  LEU*     1.3    73.9    -      -       -      +
    101D  GLY*     1.3    64.5    +      -       -      +
    102D  GLY      3.2     0.5    +      -       -      -
    103D  ILE*     3.3    13.1    +      -       -      +
    104D  ALA*     3.3    11.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 101 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97D  LYS      2.9     9.0    +      -       -      -
     98D  ALA      3.6     4.7    -      -       -      -
    100D  THR*     1.3    83.3    +      -       -      +
    102D  GLY*     1.3    60.5    +      -       -      +
    103D  ILE      3.4     0.2    -      -       -      -
    104D  ALA*     3.4    10.0    +      -       -      +
    105D  HIS*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 102 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98D  ALA      2.9    10.7    +      -       -      -
     99D  LEU*     2.8    11.8    +      -       -      -
    101D  GLY*     1.3    76.0    -      -       -      +
    103D  ILE*     1.3    59.4    +      -       -      +
    105D  HIS*     3.1     9.9    +      -       -      +
    106D  LEU*     2.9    39.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 103 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  TYR*     3.6    55.6    -      -       +      -
     41D  LEU*     3.7    24.5    -      -       +      +
     42D  GLY*     3.6    30.7    -      -       -      +
     46D  LEU*     3.7    16.4    -      -       +      -
     99D  LEU      3.1     9.7    +      -       -      +
    100D  THR      3.3     6.0    +      -       -      +
    102D  GLY*     1.3    75.9    -      -       -      +
    104D  ALA*     1.3    57.1    +      -       -      +
    106D  LEU*     3.2    10.3    +      -       +      +
    107D  PHE*     2.9    35.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 104 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41D  LEU*     3.7    17.2    -      -       +      +
    100D  THR      3.3    10.6    +      -       -      +
    101D  GLY*     3.6    13.2    -      -       -      +
    102D  GLY      3.1     0.4    -      -       -      -
    103D  ILE*     1.3    79.5    -      -       -      +
    105D  HIS*     1.3    61.8    +      -       -      +
    107D  PHE*     3.5     4.2    +      -       -      +
    108D  LYS*     3.3    25.9    +      -       -      +
    114D  HIS*     6.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 105 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474C  PHE*     6.0     5.6    -      +       -      -
    101D  GLY      3.1    13.0    +      -       -      +
    102D  GLY*     3.1    12.5    +      -       -      +
    104D  ALA*     1.3    78.1    -      -       -      +
    106D  LEU*     1.3    65.6    +      -       +      +
    108D  LYS*     3.2     9.7    +      -       -      +
    109D  GLN*     3.0    53.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 106 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    472C  ILE      3.8     8.5    -      -       -      +
    473C  ASN*     3.6    53.8    -      -       +      +
    474C  PHE*     3.8    10.1    -      -       +      +
     19D  TYR*     4.7     2.5    -      -       +      -
     23D  ILE*     4.2    17.3    -      -       +      -
    102D  GLY*     2.9    24.9    +      -       -      +
    103D  ILE*     3.7     9.2    -      -       +      +
    105D  HIS*     1.3    82.3    -      -       +      +
    107D  PHE*     1.3    66.4    +      -       -      +
    109D  GLN*     3.3    21.8    +      -       -      +
    110D  ASN*     3.0    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 107 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14D  SER*     4.9     0.4    -      -       -      -
     19D  TYR*     3.6    47.6    -      +       +      -
     22D  ALA*     3.9     7.6    -      -       +      -
     23D  ILE*     3.9    13.5    -      -       +      -
     34D  CYS*     3.6    33.2    -      -       +      -
     41D  LEU*     3.9    28.3    -      -       +      -
    103D  ILE*     2.9    22.5    +      -       +      +
    104D  ALA*     3.8     6.5    -      -       -      +
    105D  HIS      3.3     0.2    -      -       -      -
    106D  LEU*     1.3    76.2    -      -       -      +
    108D  LYS*     1.3    61.6    +      -       +      +
    110D  ASN      3.3     0.3    +      -       -      -
    111D  LYS      3.1     3.3    +      -       -      -
    112D  VAL*     2.7    56.2    +      -       +      +
    114D  HIS*     4.3    16.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 108 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104D  ALA      3.3    13.4    +      -       -      +
    105D  HIS*     3.2    13.6    +      -       -      +
    106D  LEU      3.2     0.2    -      -       -      -
    107D  PHE*     1.3    80.5    -      -       +      +
    109D  GLN*     1.3    61.7    +      -       -      +
    111D  LYS*     3.3    13.1    +      -       -      +
    112D  VAL      5.0     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 109 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474C  PHE*     3.1    32.8    +      -       -      +
     27D  GLN*     6.0     0.8    -      -       -      +
    105D  HIS*     3.0    45.2    +      -       +      +
    106D  LEU*     3.3    16.5    +      -       -      +
    108D  LYS*     1.3    77.2    -      -       -      +
    110D  ASN*     1.3    68.1    +      -       -      +
    111D  LYS*     3.7     2.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 110 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470C  LYS*     4.9     6.6    +      -       -      +
    472C  ILE      4.8     3.0    +      -       -      -
     23D  ILE*     3.6    25.9    -      -       +      +
     26D  ALA*     3.2    23.7    -      -       +      +
     27D  GLN*     3.2    28.7    +      -       -      +
    106D  LEU*     3.0    31.8    +      -       -      +
    108D  LYS      3.2     0.2    -      -       -      -
    109D  GLN*     1.3    94.3    +      -       -      +
    111D  LYS*     1.3    70.6    +      -       -      +
    112D  VAL*     3.2    15.7    -      -       +      -
----------------------------------------------------------
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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