Contacts of the helix formed by residues 471 - 496 (chain B) in PDB entry 3VF1


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 PHE 471 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  LEU*     3.0    57.9    -      -       +      -
    244B  ASN*     3.9     0.7    -      -       -      -
    248B  PRO*     3.9    18.8    -      -       +      -
    251B  ILE*     5.5     1.8    -      -       +      -
    460B  LEU*     4.4     4.0    -      -       +      -
    465B  VAL*     3.4    44.0    -      -       +      -
    468B  LEU*     3.6    24.0    -      -       +      +
    469B  ARG      3.3     3.2    -      -       -      -
    470B  LYS*     1.3    76.0    -      -       -      +
    472B  TYR*     1.3    65.1    +      -       -      +
    473B  TYR*     3.7    26.9    -      +       -      -
    474B  LYS*     3.1    27.6    +      -       +      +
    475B  ASP*     3.2    15.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 472 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244B  ASN*     2.9    33.1    +      -       -      +
    469B  ARG      4.1     7.0    -      -       -      -
    470B  LYS*     3.6    46.3    -      -       +      +
    471B  PHE*     1.3    69.9    -      -       -      +
    473B  TYR*     1.3    66.7    +      -       -      +
    475B  ASP*     3.3     5.1    +      -       -      -
    476B  ASP*     3.1    29.5    +      -       -      +
    657B  ARG*     3.6    40.2    +      -       +      +
    661B  MET*     3.5    30.2    -      -       +      +
    663B  SER      5.9     2.0    -      -       -      -
    665B  TYR*     3.8    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 473 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  LEU      3.6    18.8    -      -       -      +
    244B  ASN*     3.3     3.6    +      -       -      -
    248B  PRO*     3.8    28.5    -      -       +      -
    249B  GLU*     5.8     0.7    -      -       -      +
    456B  LEU*     3.7    17.5    -      -       +      +
    460B  LEU*     4.7    12.8    -      -       +      -
    463B  ARG*     5.6     0.7    -      -       -      -
    471B  PHE*     3.3    17.5    -      +       +      -
    472B  TYR*     1.3    77.2    -      -       -      +
    474B  LYS*     1.3    64.5    +      -       -      +
    477B  ALA*     2.8    51.9    +      -       +      +
    550B  PHE*     4.8     0.4    -      +       -      -
    555B  GLN*     2.8    34.4    +      -       -      -
    558B  ALA*     4.0    15.5    -      -       +      -
    559B  VAL*     5.7     0.2    -      -       +      -
    665B  TYR*     3.5    35.9    -      -       +      +
    668B  LEU*     3.9     6.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 474 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460B  LEU*     3.7    24.0    -      -       +      -
    465B  VAL      3.9     4.7    -      -       -      -
    466B  ASP*     2.9    40.9    +      -       -      +
    468B  LEU      2.8    27.3    +      -       -      -
    471B  PHE*     3.1    33.6    +      -       +      +
    473B  TYR*     1.3    89.5    -      -       -      +
    475B  ASP*     1.3    82.9    +      -       -      +
    477B  ALA*     4.1     0.8    -      -       -      +
    478B  LEU*     3.1    36.7    +      -       +      +
      2D  FRU      3.2    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 475 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    469B  ARG      3.7    18.9    -      -       -      +
    471B  PHE      3.2     9.6    +      -       -      +
    472B  TYR*     3.8    12.8    -      -       -      +
    474B  LYS*     1.3   106.1    +      -       -      +
    476B  ASP*     1.3    66.1    +      -       -      +
    478B  LEU*     3.5     2.4    +      -       -      +
    479B  LEU*     3.3    28.8    +      -       +      +
    657B  ARG*     4.4     8.2    +      -       -      +
      2D  FRU      3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 476 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    472B  TYR      3.1    14.4    +      -       -      +
    475B  ASP*     1.3    75.4    -      -       -      +
    477B  ALA*     1.3    65.4    +      -       -      +
    479B  LEU*     3.2    12.3    +      -       -      +
    480B  LEU*     3.1    29.4    +      -       +      +
    650B  ILE*     5.3     0.3    -      -       -      +
    654B  ILE*     3.4    30.1    -      -       +      +
    657B  ARG*     2.9    38.5    +      -       -      -
    665B  TYR*     3.3    13.9    -      -       -      +
    668B  LEU*     3.9    21.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 477 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456B  LEU*     3.4    18.5    -      -       +      +
    460B  LEU*     5.7     0.2    -      -       +      -
    473B  TYR*     2.8    38.7    +      -       +      +
    474B  LYS*     4.1     2.9    -      -       -      +
    476B  ASP*     1.3    76.8    -      -       -      +
    478B  LEU*     1.3    57.5    +      -       -      +
    480B  LEU*     4.4     2.5    -      -       -      -
    481B  TRP*     2.9    30.1    +      -       -      +
    550B  PHE*     3.5    15.2    -      -       +      -
    668B  LEU*     3.6    14.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 478 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456B  LEU*     3.8    19.5    -      -       +      -
    457B  VAL*     4.1    28.5    -      -       +      -
    460B  LEU*     3.9    15.3    -      -       +      -
    466B  ASP*     5.0     5.8    -      -       +      -
    474B  LYS*     3.1    36.2    +      -       +      +
    475B  ASP      3.9     3.8    -      -       -      +
    476B  ASP      3.2     0.2    -      -       -      -
    477B  ALA*     1.3    75.3    -      -       -      +
    479B  LEU*     1.3    65.3    +      -       -      +
    481B  TRP*     3.9     1.5    -      -       +      +
    482B  ASN*     3.0    37.3    +      -       -      +
      1D  GLC      4.6     6.5    -      -       -      +
      2D  FRU      3.5    32.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 479 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    475B  ASP*     3.3    16.1    +      -       +      +
    476B  ASP*     3.2    16.9    +      -       -      +
    478B  LEU*     1.3    79.7    -      -       +      +
    480B  LEU*     1.3    57.5    +      -       -      +
    482B  ASN*     3.5     5.9    +      -       -      +
    483B  VAL*     3.0    32.6    +      -       -      +
    650B  ILE*     3.7    30.3    -      -       +      -
    653B  GLN*     3.6    40.6    -      -       +      +
    654B  ILE*     5.3     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 480 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476B  ASP*     3.1    23.4    +      -       +      +
    477B  ALA*     3.9     3.8    -      -       -      +
    479B  LEU*     1.3    76.0    -      -       -      +
    481B  TRP*     1.3    59.6    +      -       -      +
    483B  VAL*     3.7     1.5    -      -       -      +
    484B  ILE*     2.8    38.3    +      -       +      +
    550B  PHE*     4.4     1.8    -      -       +      -
    554B  CYS*     3.7    24.5    -      -       +      -
    623B  LEU*     3.9    27.4    -      -       +      -
    647B  LEU*     4.0    15.9    -      -       +      -
    650B  ILE*     4.1    14.6    -      -       +      -
    668B  LEU*     3.5    39.3    -      -       +      +
    670B  PRO*     4.3    13.9    -      -       +      -
    673B  VAL*     5.3     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 481 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  TYR      3.6    24.5    -      -       -      -
    455B  ASP*     4.4     4.2    +      -       -      -
    456B  LEU*     3.8    31.2    -      -       +      -
    457B  VAL*     3.9    20.6    -      -       +      +
    477B  ALA      2.9    18.8    +      -       -      +
    478B  LEU*     3.9     4.9    -      -       +      +
    479B  LEU      3.4     0.2    -      -       -      -
    480B  LEU*     1.3    76.9    -      -       -      +
    482B  ASN*     1.3    72.8    +      -       -      +
    484B  ILE*     3.8     2.3    -      -       -      +
    485B  HIS*     2.8    39.6    +      +       +      +
    543B  HIS*     4.1    20.0    -      +       -      -
    546B  THR*     3.9    21.1    -      -       +      +
    547B  VAL*     3.7    24.7    -      -       +      -
    550B  PHE*     3.5    49.9    -      +       +      -
----------------------------------------------------------
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Residues in contact with ASN 482 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457B  VAL*     4.9     6.1    -      -       -      +
    478B  LEU*     3.0    28.4    +      -       -      +
    479B  LEU*     3.9     5.8    -      -       -      +
    481B  TRP*     1.3    93.9    -      -       -      +
    483B  VAL*     1.3    58.5    +      -       +      +
    485B  HIS*     3.8     6.5    +      -       -      +
    486B  GLN*     3.1    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 483 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    479B  LEU      3.0    20.2    +      -       -      +
    480B  LEU      3.3     4.0    +      -       -      +
    482B  ASN*     1.3    76.7    -      -       +      +
    484B  ILE*     1.3    65.7    +      -       +      +
    486B  GLN*     3.5     6.6    +      -       -      +
    487B  PHE      3.2    16.3    +      -       -      -
    643B  PHE*     3.4    29.7    -      -       +      -
    646B  ASN*     3.7    33.0    +      -       +      +
    647B  LEU*     3.7    17.9    -      -       +      -
    650B  ILE*     3.5    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 484 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    480B  LEU*     2.8    20.8    +      -       -      +
    481B  TRP*     3.8     3.6    -      -       -      +
    483B  VAL*     1.3    75.0    -      -       +      +
    485B  HIS*     1.3    66.2    +      -       -      +
    487B  PHE*     3.3     2.9    +      -       +      +
    488B  VAL*     3.0    29.9    +      -       +      +
    546B  THR*     4.3    14.1    -      -       +      +
    549B  VAL*     3.6    30.7    -      -       +      -
    550B  PHE*     4.0    20.9    -      -       +      -
    553B  SER*     4.2     6.3    -      -       -      +
    554B  CYS*     3.9    26.9    -      -       -      -
    623B  LEU*     4.4     8.5    -      -       +      -
    643B  PHE*     3.8    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 485 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481B  TRP*     2.8    28.6    +      -       +      +
    482B  ASN*     3.8     9.8    +      -       -      +
    483B  VAL      3.3     0.2    -      -       -      -
    484B  ILE*     1.3    76.3    -      -       -      +
    486B  GLN*     1.3    64.9    +      -       -      +
    488B  VAL*     3.6     1.6    +      -       -      +
    489B  GLN*     3.0    46.3    +      -       -      +
    539B  GLU      5.6     0.6    +      -       -      -
    542B  VAL*     3.6    16.2    -      -       +      +
    543B  HIS*     4.8    13.1    +      -       -      +
    546B  THR*     3.4    33.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 486 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    482B  ASN      3.1    17.9    +      -       -      +
    483B  VAL*     3.6     8.5    -      -       -      +
    485B  HIS*     1.3    80.2    +      -       -      +
    487B  PHE*     1.3    57.1    +      -       -      +
    489B  GLN*     3.3    20.2    +      -       -      +
    490B  ASP*     2.9    60.5    +      -       -      +
    642B  LYS*     3.4    29.3    -      -       -      +
    646B  ASN*     4.8     7.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 487 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401B  LEU*     3.6    24.2    -      -       +      -
    405B  HIS*     5.1     2.2    -      -       -      -
    483B  VAL      3.2     3.0    +      -       -      +
    484B  ILE*     3.3     7.8    +      -       +      +
    486B  GLN*     1.3    80.2    -      -       -      +
    488B  VAL*     1.3    70.5    +      -       +      +
    490B  ASP*     3.1     8.4    +      -       -      +
    491B  ILE*     3.0    44.2    +      -       +      +
    549B  VAL*     5.8     2.2    -      -       +      -
    626B  TYR*     3.8    25.1    -      +       -      -
    631B  PHE*     5.7     2.0    -      +       -      -
    639B  ALA*     3.7    18.2    -      -       +      -
    640B  MET*     3.6    38.6    -      -       +      -
    643B  PHE*     3.4    41.7    -      +       +      -
----------------------------------------------------------
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Residues in contact with VAL 488 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401B  LEU*     4.4    12.1    -      -       +      -
    484B  ILE*     3.0    30.5    +      -       +      +
    485B  HIS      4.0     0.7    -      -       -      +
    487B  PHE*     1.3    83.3    -      -       +      +
    489B  GLN*     1.3    58.0    +      -       -      +
    491B  ILE*     3.4     5.8    +      -       -      +
    492B  ILE*     3.0    35.9    +      -       +      +
    542B  VAL*     3.7    30.5    -      -       +      +
    545B  LEU*     3.9    16.2    -      -       +      -
    546B  THR*     4.0    18.2    -      -       -      +
    549B  VAL*     4.4    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 489 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    485B  HIS*     3.0    40.5    +      -       -      +
    486B  GLN*     3.6    24.0    +      -       -      +
    488B  VAL*     1.3    74.9    -      -       -      +
    490B  ASP*     1.3    66.9    +      -       -      +
    492B  ILE*     3.9     0.7    -      -       -      +
    493B  GLN*     3.0    57.3    +      -       +      +
    539B  GLU*     5.7     7.3    +      -       -      +
    542B  VAL*     3.9    22.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 490 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    486B  GLN*     2.9    37.9    +      -       -      +
    487B  PHE*     3.1    10.0    +      -       -      +
    489B  GLN*     1.3    79.6    -      -       -      +
    491B  ILE*     1.3    62.9    +      -       -      +
    493B  GLN*     3.4     6.8    +      -       -      +
    494B  ILE*     3.2    28.2    +      -       +      +
    639B  ALA*     4.0    19.7    -      -       +      +
    642B  LYS*     2.9    36.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 491 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    397B  PRO*     5.0     4.3    -      -       +      +
    401B  LEU*     4.1    22.2    -      -       +      -
    487B  PHE*     3.0    39.2    +      -       +      +
    488B  VAL*     3.8     5.8    -      -       -      +
    490B  ASP*     1.3    76.6    -      -       -      +
    492B  ILE*     1.3    67.1    +      -       +      +
    494B  ILE*     3.1    15.4    +      -       +      +
    495B  TYR*     3.1    31.7    -      -       +      -
    631B  PHE*     4.1    23.3    -      -       +      -
    636B  ALA*     4.1    23.6    -      -       +      +
    639B  ALA*     3.6    24.7    -      -       +      -
    640B  MET*     5.1     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 492 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    397B  PRO*     6.3     1.6    -      -       +      -
    398B  VAL*     4.2     9.4    -      -       +      -
    401B  LEU*     4.8     6.1    -      -       +      -
    488B  VAL*     3.0    29.1    +      -       +      +
    489B  GLN      3.9     3.4    -      -       -      +
    491B  ILE*     1.3    79.1    -      -       +      +
    493B  GLN*     1.3    58.1    +      -       +      +
    494B  ILE      3.2     0.4    -      -       -      -
    495B  TYR*     3.3     1.4    +      -       -      -
    496B  TYR*     2.8    57.6    +      -       +      +
    538B  ARG*     4.6    13.0    -      -       +      -
    541B  LEU*     3.9    20.6    -      -       +      -
    542B  VAL*     4.0    22.9    -      -       +      -
    545B  LEU*     3.8    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 493 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489B  GLN*     3.0    49.6    +      -       +      +
    490B  ASP*     3.9     7.1    -      -       -      +
    491B  ILE      3.3     0.2    -      -       -      -
    492B  ILE*     1.3    76.8    -      -       +      +
    494B  ILE*     1.3    63.6    +      -       -      +
    495B  TYR      3.3     0.2    -      -       -      -
    496B  TYR      3.7    14.1    -      -       -      +
    497B  ASN*     5.0     3.3    -      -       -      -
    538B  ARG*     3.6    36.5    +      -       +      +
    539B  GLU*     5.2     5.7    +      -       -      -
    542B  VAL*     6.0     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 494 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    490B  ASP*     3.2    17.4    +      -       +      +
    491B  ILE*     3.1    18.0    +      -       +      +
    493B  GLN*     1.3    80.8    -      -       -      +
    495B  TYR*     1.3    83.1    +      -       +      +
    633B  ASP*     5.7     1.8    -      -       +      -
    635B  ALA*     3.4    50.0    -      -       +      +
    636B  ALA*     3.8     9.2    -      -       +      +
    639B  ALA*     4.5     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 495 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119B  ALA*     3.6    32.3    -      -       +      -
    121B  LEU*     3.2    30.2    -      -       +      +
    397B  PRO*     3.7    30.1    -      -       +      -
    491B  ILE*     3.1    30.7    -      -       +      -
    492B  ILE*     3.3     2.1    +      -       +      -
    494B  ILE*     1.3   101.5    -      -       +      +
    496B  TYR*     1.3    68.1    +      -       +      +
    497B  ASN*     3.7     3.4    +      -       -      +
    501B  SER*     4.9     1.2    -      -       -      -
    631B  PHE*     3.5    24.0    -      +       -      -
    633B  ASP*     2.7    34.8    +      -       -      +
    636B  ALA*     3.9     4.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 496 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121B  LEU*     3.6    20.0    -      -       +      -
    396B  HIS*     3.2    15.8    -      -       -      -
    397B  PRO*     4.8     2.7    -      -       +      -
    398B  VAL*     4.1     7.9    -      -       +      +
    492B  ILE*     2.8    44.1    +      -       +      +
    493B  GLN*     3.7     6.6    -      -       -      +
    495B  TYR*     1.3    81.4    -      +       +      +
    497B  ASN*     1.3    59.8    +      -       -      +
    498B  ASP      3.3     0.9    -      -       -      -
    501B  SER*     3.7    28.7    -      -       -      -
    502B  VAL*     3.6    26.5    -      -       +      -
    505B  ASP*     2.6    29.7    +      -       +      -
    508B  ILE*     4.3     5.4    -      -       +      +
    538B  ARG*     2.9    39.2    +      -       +      -
    541B  LEU*     4.0    16.3    -      -       +      +
----------------------------------------------------------
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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