Contacts of the helix formed by residues 33 - 63 (chain C) in PDB entry 2FBW


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 SER 33 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220B  ASN*     4.4     3.6    +      -       -      -
    223B  ARG*     3.5    42.8    +      -       -      -
     31C  LYS      5.2     0.7    -      -       -      -
     32C  TRP*     1.3    78.3    -      -       -      +
     34C  LEU*     1.3    64.5    +      -       -      +
     35C  PRO*     3.5     5.2    -      -       -      +
     36C  MET*     3.3    25.2    +      -       -      +
     37C  ALA*     3.0    24.7    +      -       -      +
    120C  GLU*     5.2     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 34 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  SER*     1.3    72.3    -      -       -      +
     35C  PRO*     1.3    67.5    -      -       +      +
     37C  ALA*     3.2     8.8    +      -       +      -
     38C  MET*     2.8    57.1    +      -       +      +
    120C  GLU*     4.1    12.7    +      -       -      +
    123C  GLY*     4.9     0.4    -      -       -      -
    124C  VAL*     3.9    29.4    -      -       +      +
    127C  LEU*     4.3    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 35 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218B  ILE      4.4    13.5    -      -       -      +
    219B  MET*     5.3     2.7    -      -       +      +
    220B  ASN*     6.0     0.4    -      -       -      +
    223B  ARG*     3.4    30.1    -      -       -      +
     33C  SER*     3.5     4.0    -      -       -      +
     34C  LEU*     1.3    95.4    -      -       +      +
     36C  MET*     1.3    57.2    +      -       -      +
     38C  MET*     3.3     6.1    +      -       +      +
     39C  SER*     2.9    29.6    +      -       -      -
    104C  ARG*     4.7     9.8    +      -       -      +
    108C  TRP*     6.1     0.7    -      -       +      -
    119C  VAL*     3.8    33.0    -      -       +      +
    120C  GLU*     3.5    13.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 36 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  PRO*     4.7    11.4    -      -       +      -
    172B  TRP*     5.8     4.5    -      -       -      -
    218B  ILE*     4.6    13.2    +      -       +      -
    220B  ASN*     3.3    36.3    +      -       -      +
     30C  TYR*     4.3     8.3    -      -       +      +
     31C  LYS      3.2    27.4    -      -       -      +
     32C  TRP*     3.5    40.2    -      -       +      -
     33C  SER*     3.3    15.7    +      -       -      +
     35C  PRO*     1.3    78.3    -      -       -      +
     37C  ALA*     1.3    62.5    +      -       -      +
     39C  SER*     3.3     7.5    +      -       -      -
     40C  ILE*     3.2    27.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 37 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32C  TRP*     4.1    20.6    -      -       +      -
     33C  SER      3.0    18.0    +      -       -      +
     34C  LEU*     3.7    11.2    -      -       +      +
     36C  MET*     1.3    77.3    -      -       -      +
     38C  MET*     1.3    60.4    +      -       +      +
     40C  ILE*     3.4     5.8    +      -       -      +
     41C  THR*     2.8    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 38 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  LEU*     2.8    44.1    +      -       +      +
     35C  PRO*     3.9     4.0    -      -       -      +
     37C  ALA*     1.3    71.1    -      -       +      +
     39C  SER*     1.3    59.9    +      -       -      +
     41C  THR*     4.3     2.2    -      -       -      -
     42C  HIS*     2.9    28.4    +      -       -      +
     97C  TYR*     2.9    36.4    +      -       +      +
    101C  ASN*     3.9     3.2    +      -       -      +
    104C  ARG*     3.9    20.4    -      -       -      +
    123C  GLY*     3.3    45.3    -      -       -      +
    126C  VAL*     3.8    21.5    -      -       +      -
    127C  LEU*     4.0    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 39 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216B  HIS      5.3     1.8    +      -       -      -
    217B  THR      5.4     0.9    -      -       -      -
    218B  ILE*     3.4    37.2    -      -       -      +
     35C  PRO      2.9    17.4    +      -       -      -
     36C  MET*     3.5     9.3    +      -       -      +
     37C  ALA      3.2     0.2    -      -       -      -
     38C  MET*     1.3    77.6    -      -       -      +
     40C  ILE*     1.3    65.2    +      -       -      +
     42C  HIS*     3.3     8.9    +      -       -      +
     43C  ARG*     3.3    19.8    +      -       -      +
    101C  ASN*     5.3     1.1    -      -       -      +
    104C  ARG*     5.7     0.2    -      -       -      +
    105C  HIS*     5.5     7.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 40 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32C  TRP*     3.2    41.1    -      -       +      -
     36C  MET*     3.2    11.6    +      -       +      +
     37C  ALA*     3.8     8.1    -      -       -      +
     39C  SER*     1.3    80.9    -      -       -      +
     41C  THR*     1.3    61.2    -      -       -      +
     43C  ARG*     3.3     8.8    +      -       -      +
     44C  GLY*     2.8    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 41 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ALA*     2.8    20.2    +      -       -      +
     38C  MET*     3.7     5.1    -      -       -      -
     39C  SER      3.2     0.2    -      -       -      -
     40C  ILE*     1.3    78.4    -      -       -      +
     42C  HIS*     1.3    59.8    +      -       -      +
     44C  GLY*     4.2     2.5    -      -       -      +
     45C  THR*     2.9    37.2    +      -       +      -
     93C  PHE*     6.4     2.0    -      -       +      -
     97C  TYR*     3.8    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 42 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  MET      2.9    10.5    +      -       -      +
     39C  SER*     3.3     7.8    +      -       -      +
     41C  THR*     1.3    76.4    -      -       -      +
     43C  ARG*     1.3    59.7    +      -       -      +
     45C  THR*     3.0    17.6    +      -       -      -
     46C  GLY      3.0    11.1    +      -       -      -
     97C  TYR*     3.7     4.0    -      -       -      -
     98C  HIS*     3.2    61.6    +      +       -      -
    101C  ASN*     3.1    35.7    +      -       -      +
    102C  GLY*     3.7    17.6    -      -       -      -
    105C  HIS*     4.0    21.0    -      +       -      +
----------------------------------------------------------
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Residues in contact with ARG 43 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216B  HIS*     3.9    18.6    +      -       -      +
     39C  SER      3.3     8.5    +      -       -      +
     40C  ILE*     3.3    11.8    +      -       -      +
     42C  HIS*     1.3    79.5    -      -       -      +
     44C  GLY*     1.3    66.3    +      -       -      +
     46C  GLY*     3.3     1.7    +      -       -      -
     47C  VAL*     3.0    28.2    +      -       +      +
     53D  GLN*     4.3     6.3    -      -       -      +
     54D  VAL*     3.7    37.2    -      -       +      +
     57D  ASP*     2.8    32.9    +      -       -      +
     58D  TYR*     3.0    43.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 44 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  ILE      2.8    19.4    +      -       -      -
     41C  THR*     3.4     3.8    +      -       -      -
     42C  HIS      3.4     0.2    -      -       -      -
     43C  ARG*     1.3    75.2    -      -       -      +
     45C  THR*     1.3    58.2    +      -       -      +
     47C  VAL*     3.5     4.8    +      -       -      +
     48C  ALA*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 45 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  THR*     2.9    31.3    +      -       +      +
     42C  HIS*     3.0    14.2    +      -       -      -
     44C  GLY*     1.3    70.1    -      -       -      +
     46C  GLY*     1.3    59.3    +      -       -      +
     48C  ALA*     3.1     6.6    +      -       -      +
     49C  LEU*     2.8    37.0    +      -       -      +
     93C  PHE*     6.2     1.6    -      -       +      -
     94C  PRO*     3.7    38.8    -      -       +      +
     97C  TYR*     3.9    15.3    -      -       +      -
     98C  HIS*     3.3    14.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 46 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42C  HIS      3.0    11.0    +      -       -      -
     43C  ARG*     3.3     3.5    +      -       -      -
     45C  THR*     1.3    78.0    +      -       -      +
     47C  VAL*     1.3    61.3    +      -       -      +
     49C  LEU*     3.3     5.1    +      -       -      +
     50C  SER*     3.0    26.8    +      -       -      -
     98C  HIS*     3.5    26.2    +      -       -      -
     51D  LEU*     5.6     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 47 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  ARG*     3.0    21.2    +      -       +      +
     44C  GLY*     4.0     4.7    -      -       -      +
     46C  GLY*     1.3    75.7    -      -       -      +
     48C  ALA*     1.3    64.0    +      -       -      +
     50C  SER*     3.2     1.4    +      -       -      +
     51C  LEU*     3.0    44.9    +      -       +      +
     51D  LEU*     3.9    29.6    -      -       +      -
     54D  VAL*     4.3    22.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 48 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44C  GLY      3.0    18.7    +      -       -      +
     45C  THR*     3.6     7.9    -      -       -      +
     47C  VAL*     1.3    78.6    -      -       -      +
     49C  LEU*     1.3    57.0    +      -       -      +
     51C  LEU*     3.8     7.3    -      -       -      +
     52C  GLY*     2.9    25.1    +      -       -      -
     94C  PRO*     5.3     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 49 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45C  THR      2.8    23.7    +      -       -      +
     46C  GLY*     3.7     5.2    -      -       -      +
     48C  ALA*     1.3    73.4    -      -       +      +
     50C  SER*     1.3    58.0    +      -       -      +
     52C  GLY*     3.2     3.1    +      -       -      -
     53C  VAL*     2.9    34.1    +      -       +      +
     91C  LEU      5.5     1.1    -      -       -      +
     94C  PRO*     4.2    11.7    -      -       +      +
     95C  LEU*     3.9    47.1    -      -       +      +
     98C  HIS*     3.8    37.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  GLY      3.0    17.6    +      -       -      -
     47C  VAL      3.2     4.0    +      -       -      -
     49C  LEU*     1.3    77.8    -      -       -      +
     51C  LEU*     1.3    59.5    +      -       -      +
     53C  VAL*     3.1     8.2    +      -       -      +
     54C  SER*     2.8    33.0    +      -       -      -
     47D  GLY*     3.6    26.7    +      -       -      -
     51D  LEU*     4.1    27.5    -      -       -      +
     75D  LEU*     6.4     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  VAL*     3.0    39.2    +      -       +      +
     48C  ALA*     4.0     6.3    -      -       -      +
     50C  SER*     1.3    77.5    -      -       -      +
     52C  GLY*     1.3    56.5    +      -       -      +
     54C  SER*     3.9     5.0    -      -       -      -
     55C  LEU*     3.0    41.8    +      -       +      +
     51D  LEU*     5.5     5.2    -      -       +      -
     75D  LEU*     4.9    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48C  ALA      2.9    16.0    +      -       -      -
     49C  LEU*     3.2     4.5    +      -       -      -
     51C  LEU*     1.3    74.3    -      -       -      +
     53C  VAL*     1.3    64.5    +      -       -      +
     55C  LEU*     3.3     8.0    +      -       -      +
     56C  PHE*     3.0    24.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  LEU*     2.9    19.2    +      -       +      +
     50C  SER*     3.1     9.2    +      -       -      +
     52C  GLY*     1.3    73.7    -      -       -      +
     54C  SER*     1.3    59.9    +      -       -      +
     56C  PHE*     3.7     7.4    -      -       -      +
     57C  SER*     2.9    27.5    +      -       -      -
     43D  LEU*     4.5    32.5    -      -       +      +
     44D  THR*     5.7     0.4    -      -       -      +
     79D  THR*     3.7    20.6    -      -       +      -
     83D  LEU*     3.9    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  SER*     2.8    19.0    +      -       -      -
     51C  LEU*     4.0     8.1    -      -       -      -
     53C  VAL*     1.3    77.3    -      -       -      +
     55C  LEU*     1.3    57.3    +      -       -      +
     57C  SER*     3.4     2.1    +      -       -      -
     58C  LEU*     2.8    30.0    +      -       -      +
     75D  LEU*     3.4    31.2    -      -       -      +
     78D  ILE*     6.1     0.3    -      -       -      +
     79D  THR*     2.7    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  LEU*     3.0    28.6    +      -       +      +
     52C  GLY*     3.7     7.2    -      -       -      +
     54C  SER*     1.3    76.4    -      -       -      +
     56C  PHE*     1.3    52.1    +      -       -      +
     58C  LEU*     3.1    19.1    +      -       +      +
     59C  ALA*     2.7    36.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52C  GLY      3.0    17.2    +      -       -      +
     53C  VAL*     3.7     5.2    -      -       -      +
     55C  LEU*     1.3    77.2    -      -       -      +
     57C  SER*     1.3    65.2    +      -       -      +
     59C  ALA*     3.1    10.1    +      -       +      +
     60C  ALA*     2.9    23.1    +      -       +      +
     67C  PHE*     4.2    25.1    -      +       -      -
     83D  LEU*     3.9    22.4    -      -       +      -
     86D  PHE*     3.6    51.6    -      +       +      -
     93D  ILE*     5.2     4.9    -      -       +      -
     96D  ALA*     4.8     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  VAL      2.9    18.1    +      -       -      -
     54C  SER      3.6     4.7    -      -       -      -
     56C  PHE*     1.3    82.3    -      -       -      +
     58C  LEU*     1.3    62.6    +      -       -      +
     60C  ALA*     3.4     5.0    +      -       -      +
     61C  LEU*     3.4    23.6    +      -       -      +
     78D  ILE*     3.3     9.4    +      -       -      +
     79D  THR*     2.8    35.6    +      -       -      -
     82D  GLY*     3.1    17.4    -      -       -      -
     83D  LEU*     4.1    11.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  SER      2.8    18.5    +      -       -      +
     55C  LEU*     3.1    20.2    +      -       +      +
     57C  SER*     1.3    74.8    +      -       -      +
     59C  ALA*     1.3    66.0    +      -       -      +
     61C  LEU*     3.1    10.6    +      -       +      +
     62C  LEU*     3.1    48.8    +      -       +      +
     78D  ILE*     4.4    21.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55C  LEU      2.7    19.4    +      -       -      +
     56C  PHE*     3.6    10.1    -      -       +      +
     58C  LEU*     1.3    73.3    -      -       -      +
     60C  ALA*     1.3    57.2    +      -       -      +
     62C  LEU*     4.6     2.5    -      -       -      +
     63C  LEU*     2.8    58.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56C  PHE*     2.9    18.3    +      -       +      +
     57C  SER*     3.7     7.6    -      -       -      +
     58C  LEU      3.2     0.2    -      -       -      -
     59C  ALA*     1.3    77.6    -      -       -      +
     61C  LEU*     1.3    60.9    +      -       -      +
     63C  LEU      4.3     6.9    -      -       -      +
     82D  GLY      4.5     5.6    -      -       -      +
     85D  TYR*     3.4    20.4    +      -       +      -
     86D  PHE*     4.0    38.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  SER      3.4    16.4    -      -       -      +
     58C  LEU*     3.1    11.5    +      -       +      +
     60C  ALA*     1.3    78.7    -      -       -      +
     62C  LEU*     1.3    68.9    +      -       +      +
     63C  LEU      4.6     1.6    -      -       -      +
     78D  ILE*     4.1    24.0    -      -       +      +
     81D  THR*     4.5    11.7    -      -       +      +
     82D  GLY*     3.8    22.7    -      -       -      +
     85D  TYR*     3.8    40.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  LEU*     3.1    45.0    +      -       +      +
     59C  ALA*     5.0     2.0    -      -       -      -
     61C  LEU*     1.3    86.1    -      -       +      +
     63C  LEU*     1.3    69.8    +      -       +      +
     64C  PRO*     3.6     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  ALA*     2.8    42.3    +      -       +      +
     60C  ALA*     4.3     8.1    -      -       -      +
     61C  LEU      4.6     1.6    -      -       -      +
     62C  LEU*     1.3    79.2    -      -       +      +
     64C  PRO*     1.3    76.0    -      -       +      +
     65C  GLU      3.6     5.6    +      -       -      +
     70C  TYR*     3.6    37.7    -      -       +      +
----------------------------------------------------------
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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