Contacts of the helix formed by residues 42 - 69 (chain A) in PDB entry 3DVA


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 42 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  GLU      4.3     0.2    -      -       -      -
     41A  LEU*     1.3    75.6    -      -       -      +
     43A  ASP*     1.3    61.7    +      -       -      +
     44A  GLU*     3.6     6.6    +      -       -      +
     45A  GLN*     2.8    37.5    +      -       -      +
     46A  LEU*     3.0    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 43 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LEU      5.0     0.9    -      -       -      +
     42A  SER*     1.3    75.8    -      -       -      +
     44A  GLU*     1.3    57.8    +      -       -      +
     46A  LEU*     3.5     8.6    +      -       -      +
     47A  LYS*     2.9    36.9    +      -       +      +
    306A  LYS*     4.9     5.4    +      -       -      -
    308A  LEU*     3.4    44.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 44 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  SER*     3.2     7.0    +      -       -      +
     43A  ASP*     1.3    77.0    -      -       -      +
     45A  GLN*     1.3    61.2    +      -       +      +
     47A  LYS*     3.1    26.4    +      -       -      +
     48A  GLU*     2.9    38.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 45 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  GLU      4.2     2.8    +      -       -      +
     41A  LEU*     3.4    22.7    -      -       +      +
     42A  SER*     2.8    43.1    +      -       -      +
     44A  GLU*     1.3    77.2    -      -       +      +
     46A  LEU*     1.3    63.8    +      -       -      +
     48A  GLU*     3.2     3.5    +      -       -      -
     49A  LEU*     3.0    22.0    +      -       -      +
     90A  PHE*     3.5    31.2    -      -       +      -
    242A  TYR*     5.5     1.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 46 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LEU*     3.7    40.2    -      -       +      +
     42A  SER      3.0    24.2    +      -       -      +
     43A  ASP*     3.6     7.6    -      -       -      +
     45A  GLN*     1.3    75.9    -      -       -      +
     47A  LYS*     1.3    60.8    +      -       -      +
     49A  LEU*     3.6     2.1    +      -       -      +
     50A  MET      3.3    15.8    +      -       -      -
    239A  LEU*     4.2     9.6    -      -       +      -
    299A  PHE*     3.5    31.9    -      -       +      -
    302A  PHE*     4.5     9.4    -      -       +      -
    303A  LEU*     3.7    21.5    -      -       +      +
    306A  LYS*     4.3    25.4    -      -       -      -
    308A  LEU*     4.4     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 47 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43A  ASP*     2.9    31.0    +      -       +      +
     44A  GLU*     3.1    29.4    +      -       -      +
     46A  LEU*     1.3    77.5    -      -       +      +
     48A  GLU*     1.3    58.9    +      -       -      +
     50A  MET      3.4     1.2    +      -       -      -
     51A  ARG*     2.9    26.5    +      -       -      +
    303A  LEU*     4.6     3.1    -      -       +      -
    308A  LEU*     2.9    46.8    +      -       +      +
    309A  TRP*     3.6    13.9    -      -       +      -
    313A  GLU*     2.5    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 48 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  GLU*     2.9    26.1    +      -       +      +
     45A  GLN*     3.9     4.9    -      -       -      +
     47A  LYS*     1.3    73.4    -      -       -      +
     49A  LEU*     1.3    61.5    +      -       -      +
     51A  ARG*     3.0    30.5    +      -       -      +
     52A  ARG*     2.8    69.6    +      -       -      +
     90A  PHE*     4.4     9.6    -      -       +      -
    110A  TRP*     4.7     5.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 49 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LEU*     4.9    14.4    -      -       +      -
     45A  GLN      3.0    16.3    +      -       -      +
     46A  LEU*     3.8     6.5    -      -       +      +
     48A  GLU*     1.3    75.1    -      -       -      +
     50A  MET*     1.3    59.6    +      -       -      +
     52A  ARG*     3.3     2.5    +      -       -      +
     53A  MET*     3.0    44.2    +      -       +      +
     86A  ILE*     4.1     8.7    -      -       +      -
     87A  ALA*     3.7    34.1    -      -       +      +
     90A  PHE*     3.8    35.3    -      -       +      -
    238A  PRO*     4.2    19.1    -      -       +      +
    239A  LEU*     5.0     1.3    -      -       +      -
    242A  TYR*     5.2     2.7    -      -       +      -
    299A  PHE*     4.0    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 50 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  LEU      3.3     2.8    +      -       -      +
     47A  LYS      3.6     8.5    -      -       -      +
     48A  GLU      3.2     0.2    -      -       -      -
     49A  LEU*     1.3    75.5    -      -       -      +
     51A  ARG*     1.3    59.2    +      -       -      +
     53A  MET*     3.3    13.0    +      -       -      -
     54A  VAL*     3.0    53.3    +      -       +      +
    296A  LEU*     3.8    14.6    -      -       +      +
    299A  PHE*     3.6    32.7    -      -       +      -
    300A  ARG*     3.7    36.1    -      -       +      +
    303A  LEU*     3.6    12.3    -      -       +      -
    309A  TRP*     3.7    36.3    -      -       +      +
    314A  GLU*     4.1     4.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 51 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LYS      2.9    15.7    +      -       -      +
     48A  GLU*     3.0    33.6    +      -       -      +
     50A  MET*     1.3    77.4    -      -       -      +
     52A  ARG*     1.3    57.2    +      -       -      +
     55A  TYR*     2.9    30.7    +      -       +      +
    110A  TRP*     5.3     1.6    -      -       +      -
    309A  TRP*     4.1    10.2    -      -       +      -
    313A  GLU*     4.7    17.4    +      -       -      +
    316A  ASN*     4.9     8.1    +      -       -      +
    317A  VAL*     3.4    50.8    -      -       +      +
    320A  GLN*     2.9    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  GLU*     2.8    48.1    +      -       -      +
     49A  LEU      3.7     2.0    -      -       -      +
     51A  ARG*     1.3    74.3    -      -       -      +
     53A  MET*     1.3    56.9    +      -       -      +
     55A  TYR*     3.5     1.0    -      -       -      +
     56A  THR*     2.7    37.7    +      -       -      -
     86A  ILE*     3.6    20.4    -      -       +      -
     89A  HIS*     3.6    31.7    +      -       -      -
     90A  PHE*     3.9    31.0    -      -       -      +
    110A  TRP*     3.7    46.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LEU*     3.0    29.3    +      -       +      +
     50A  MET*     3.3     9.6    +      -       -      +
     52A  ARG*     1.3    74.6    -      -       -      +
     54A  VAL*     1.3    59.4    +      -       -      +
     56A  THR*     3.5     1.1    +      -       -      -
     57A  ARG*     3.0    25.3    +      -       -      +
     82A  GLU*     3.4    27.8    -      -       +      +
     83A  ALA*     4.1    16.8    -      -       -      -
     86A  ILE*     4.0    15.7    -      -       +      -
    238A  PRO*     3.7    30.7    -      -       +      -
    295A  PRO*     4.8     3.6    -      -       -      +
    296A  LEU*     3.5    17.4    -      -       +      +
    299A  PHE*     3.3    39.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  MET*     3.0    49.5    +      -       +      +
     51A  ARG      4.0     2.7    -      -       -      +
     53A  MET*     1.3    73.4    -      -       -      +
     55A  TYR*     1.3    65.7    +      -       -      +
     57A  ARG*     3.2     6.5    +      -       +      +
     58A  ILE*     3.1    23.4    +      -       +      +
    296A  LEU*     4.0    12.6    -      -       +      -
    309A  TRP*     4.4     3.4    -      -       +      -
    314A  GLU*     3.9    27.4    -      -       +      +
    317A  VAL*     4.1    12.3    -      -       +      -
    318A  ILE*     3.9    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  ARG*     2.9    21.7    +      -       +      +
     52A  ARG      3.5     5.6    -      -       -      +
     53A  MET      3.3     0.2    -      -       -      -
     54A  VAL*     1.3    77.3    -      -       -      +
     56A  THR*     1.3    58.7    +      -       -      +
     58A  ILE*     3.2     5.9    +      -       -      +
     59A  LEU*     2.8    37.3    +      -       +      -
    109A  ILE*     5.9     5.4    -      -       +      -
    110A  TRP*     3.5    32.3    -      +       +      -
    115A  LEU*     3.8    21.2    -      -       +      +
    317A  VAL*     4.0    13.2    -      -       +      +
    320A  GLN*     4.4    10.3    -      -       +      -
    321A  ALA*     3.5    39.0    +      -       +      +
    324A  GLU*     2.6    40.5    +      -       -      +
    325A  ILE*     5.3     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  ARG      2.7    25.2    +      -       -      -
     53A  MET      3.8     4.0    -      -       -      -
     55A  TYR*     1.3    73.3    -      -       -      +
     57A  ARG*     1.3    65.9    +      -       -      +
     59A  LEU*     3.2    12.7    +      -       +      +
     60A  ASP*     3.1    21.5    +      -       -      +
     78A  THR*     4.1    10.6    +      -       -      +
     82A  GLU*     4.2    11.0    -      -       +      -
     85A  GLN*     4.9     3.1    -      -       -      +
     86A  ILE*     3.4    14.4    -      -       +      +
    106A  PRO*     3.8    30.7    -      -       +      -
    110A  TRP*     3.1    21.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  MET      3.0    14.5    +      -       -      +
     54A  VAL*     3.2    10.1    +      -       +      +
     56A  THR*     1.3    74.9    -      -       -      +
     58A  ILE*     1.3    63.6    +      -       +      +
     60A  ASP*     3.3     7.1    +      -       -      +
     61A  GLN*     3.3    41.9    +      -       -      +
     79A  ALA*     4.0    14.1    -      -       -      -
     80A  GLY*     3.7    13.9    -      -       -      +
     82A  GLU*     2.6    44.3    +      -       -      -
    268A  TYR*     4.1     8.3    -      -       -      -
    294A  ASP*     2.8    43.2    +      -       -      -
    295A  PRO*     4.1     0.6    -      -       -      +
    296A  LEU*     3.6    26.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  VAL*     3.1    16.3    +      -       +      +
     55A  TYR      3.5     6.7    -      -       -      +
     57A  ARG*     1.3    75.2    -      -       +      +
     59A  LEU*     1.3    66.1    +      -       -      +
     61A  GLN*     3.3    28.8    +      -       -      +
     62A  ARG*     3.1    36.6    +      -       +      +
    318A  ILE*     3.6    45.8    -      -       +      +
    321A  ALA*     3.8    20.9    -      -       +      -
    322A  LYS*     4.2    17.9    -      -       +      -
    325A  ILE*     4.3     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  TYR*     2.8    23.7    +      -       +      +
     56A  THR*     3.2    18.4    +      -       +      +
     58A  ILE*     1.3    77.9    -      -       -      +
     60A  ASP*     1.3    53.3    +      -       -      +
     62A  ARG*     3.9     1.1    -      -       +      +
     63A  SER*     2.7    47.9    +      -       -      +
     75A  TYR*     5.6     3.4    -      -       +      +
     78A  THR*     6.1     0.4    -      -       -      +
    105A  VAL*     6.0     0.7    -      -       +      -
    106A  PRO*     4.8    18.8    -      -       +      -
    109A  ILE*     3.9    26.5    -      -       +      -
    110A  TRP*     6.0     1.6    -      -       -      +
    115A  LEU*     3.7    24.9    -      -       +      -
    119A  PHE*     4.2     9.2    -      -       +      -
    325A  ILE*     3.9    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  THR      3.1     7.9    +      -       -      +
     57A  ARG      3.5     9.4    -      -       -      +
     58A  ILE      3.2     0.4    -      -       -      -
     59A  LEU*     1.3    75.6    -      -       -      +
     61A  GLN*     1.3    66.6    +      -       -      +
     63A  SER*     3.3     0.9    +      -       -      -
     64A  ILE*     2.9    44.0    +      -       -      +
     75A  TYR*     2.4    40.5    +      -       -      +
     77A  PRO*     3.4     4.5    -      -       -      +
     78A  THR*     3.2    19.9    +      -       -      +
     79A  ALA*     2.8    41.0    +      -       +      +
    269A  GLY*     5.8     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  ARG*     3.3    31.3    +      -       +      +
     58A  ILE*     3.3    32.3    +      -       -      +
     60A  ASP*     1.3    79.1    -      -       +      +
     62A  ARG*     1.3    63.1    +      -       +      +
     64A  ILE*     3.3     9.0    +      -       -      +
     65A  SER*     3.0    27.8    +      -       -      -
    322A  LYS*     5.7     2.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  ILE*     3.1    25.4    +      -       +      +
     59A  LEU      4.0     0.4    -      -       -      +
     61A  GLN*     1.3    79.5    -      -       +      +
     63A  SER*     1.3    61.2    +      -       -      +
     65A  SER*     3.2    25.4    +      -       -      -
     66A  LEU*     2.8    59.9    +      -       +      +
     69A  GLN*     4.5     5.5    -      -       -      +
     71A  ARG*     5.6     2.2    -      -       -      +
    119A  PHE*     6.2     0.2    -      -       +      -
    322A  LYS*     4.9    19.3    -      -       +      +
    325A  ILE*     3.7    39.7    -      -       +      +
    326A  LYS*     4.7    18.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  LEU*     2.7    36.5    +      -       -      +
     60A  ASP      3.7     0.4    -      -       -      -
     62A  ARG*     1.3    76.2    -      -       -      +
     64A  ILE*     1.3    63.2    +      -       -      +
     66A  LEU*     4.9     0.7    -      -       -      -
     67A  ASN*     3.0    26.7    +      -       -      +
     72A  LEU*     3.7    17.1    -      -       -      +
     75A  TYR*     3.6    38.7    -      -       -      -
    119A  PHE*     4.1    11.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ASP*     2.9    41.6    +      -       -      +
     61A  GLN*     3.5     7.2    -      -       -      +
     63A  SER*     1.3    76.2    -      -       -      +
     65A  SER*     1.3    59.0    +      -       -      +
     67A  ASN*     3.5     2.9    +      -       -      +
     68A  ARG*     3.0    58.0    +      -       -      +
     75A  TYR*     3.8    14.6    -      -       +      -
     77A  PRO*     4.5    11.2    -      -       +      -
    269A  GLY*     5.4     3.1    -      -       -      -
    270A  PRO*     4.9     9.6    -      -       +      -
    273A  MET*     3.9    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  GLN      3.0    16.2    +      -       -      -
     62A  ARG*     3.2    21.7    +      -       -      -
     64A  ILE*     1.3    75.3    -      -       -      +
     66A  LEU*     1.3    60.2    +      -       -      +
     68A  ARG*     3.1    11.6    +      -       -      +
     69A  GLN*     2.9    50.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 66 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  ARG*     2.8    43.9    +      -       -      +
     65A  SER*     1.3    68.8    +      -       -      +
     67A  ASN*     1.3    66.2    +      -       -      +
     69A  GLN*     2.9    16.5    +      -       -      +
     71A  ARG*     2.8    65.9    +      -       +      +
     72A  LEU*     3.7    25.4    -      -       +      -
    119A  PHE*     4.6     4.5    -      -       +      -
    325A  ILE*     4.3    19.7    -      -       +      -
    329A  ILE*     3.8    27.8    -      -       +      -
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Residues in contact with ASN 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  SER      3.0    19.9    +      -       -      +
     64A  ILE      3.7     3.5    -      -       -      +
     66A  LEU*     1.3    75.1    -      -       -      +
     68A  ARG*     1.3    64.7    +      -       -      +
     70A  GLY*     3.0    19.2    +      -       -      -
     72A  LEU*     3.8    20.8    +      -       +      +
     73A  GLY*     2.7    28.4    +      -       -      +
     74A  PHE*     4.9     0.2    -      -       -      +
     75A  TYR*     4.5     2.9    -      -       +      +
    273A  MET*     3.1    47.9    +      -       +      +
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Residues in contact with ARG 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  ILE*     3.0    44.0    +      -       +      +
     65A  SER*     3.1    14.3    +      -       -      +
     67A  ASN*     1.3    82.4    +      -       -      +
     69A  GLN*     1.3    58.1    +      -       +      +
     70A  GLY      3.1     0.8    +      -       -      -
    270A  PRO*     5.6     2.6    -      -       -      +
    273A  MET*     4.6     8.6    -      -       -      +
    278A  PRO*     4.0    28.9    +      -       -      +
    279A  THR*     4.7     7.1    -      -       -      +
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Residues in contact with GLN 69 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  ARG*     4.5     8.5    -      -       -      +
     65A  SER*     2.9    40.1    +      -       -      +
     66A  LEU*     2.9    21.1    +      -       -      +
     68A  ARG*     1.3    77.6    -      -       +      +
     70A  GLY*     1.3    59.4    +      -       -      +
     71A  ARG*     3.1    33.7    +      -       +      +
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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