Contacts of the helix formed by residues 512 - 536 (chain A) in PDB entry 3K5M


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 ASP 512 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394A  VAL*     3.9    15.2    -      -       +      +
    438A  LEU*     3.8     6.8    -      -       +      +
    503A  LEU      3.1    11.3    +      -       -      +
    510A  PHE      3.4     1.8    +      -       -      +
    511A  PHE*     1.3    77.2    -      -       -      +
    513A  PRO*     1.3    66.3    -      -       -      +
    514A  ARG*     2.6    72.8    +      -       -      +
    515A  LEU*     2.7    48.0    +      -       +      +
    516A  ALA      3.3     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 513 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394A  VAL*     3.8    12.8    -      -       +      -
    395A  PRO      4.0     4.7    -      -       -      +
    397A  HIS*     3.5    42.0    -      -       +      +
    398A  ALA      5.0     1.3    -      -       -      +
    399A  SER*     3.8    11.7    -      -       -      +
    455A  LEU*     4.0    15.3    -      -       +      -
    511A  PHE*     3.6    21.0    -      -       +      -
    512A  ASP*     1.3    91.4    -      -       -      +
    514A  ARG*     1.3    55.2    +      -       +      +
    516A  ALA*     4.6     1.6    -      -       +      +
    517A  SER*     2.9    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 514 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394A  VAL*     5.2     8.0    -      -       -      +
    438A  LEU*     3.8    24.0    -      -       +      +
    442A  MET*     4.1    25.6    -      -       -      +
    454A  PHE      4.3     2.0    -      -       -      +
    455A  LEU*     3.7    39.0    -      -       +      +
    456A  ASP*     5.0     1.3    -      -       -      -
    457A  ALA*     4.2    17.3    -      -       +      +
    459A  PHE*     4.0     2.4    -      -       -      -
    512A  ASP*     2.6    42.2    +      -       -      +
    513A  PRO*     1.3    74.1    -      -       +      +
    515A  LEU*     1.3    61.1    +      -       -      +
    518A  SER*     3.0    29.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 515 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433A  ILE*     3.5    20.5    -      -       +      +
    434A  ASP*     3.5    35.9    -      -       -      +
    435A  PRO*     3.8    15.7    -      -       +      -
    438A  LEU*     4.1     8.5    -      -       +      -
    459A  PHE*     3.6    17.3    -      -       +      -
    503A  LEU*     4.0    26.9    -      -       +      -
    510A  PHE      3.2    27.1    -      -       -      +
    512A  ASP*     2.7    29.4    +      -       +      +
    514A  ARG*     1.3    74.5    -      -       -      +
    516A  ALA*     1.3    61.3    +      -       -      +
    518A  SER*     3.4     5.2    +      -       -      -
    519A  ILE*     3.4    11.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 516 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399A  SER*     3.2    22.7    -      -       -      +
    500A  TYR*     4.4    20.8    -      -       +      +
    503A  LEU*     4.6     4.1    +      -       -      +
    504A  GLY*     3.8    28.7    -      -       -      +
    512A  ASP      3.3     4.7    +      -       -      +
    513A  PRO*     4.2     0.9    -      -       +      +
    515A  LEU*     1.3    74.5    -      -       -      +
    517A  SER*     1.3    66.3    +      -       -      +
    519A  ILE*     3.0    15.6    +      -       -      +
    520A  THR*     3.1    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 517 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398A  ALA      4.6     1.7    +      -       -      -
    399A  SER*     2.9    23.6    +      -       -      -
    400A  PRO*     3.6     9.0    -      -       -      +
    454A  PHE*     4.5     2.0    -      -       -      -
    455A  LEU*     3.6    29.1    -      -       -      +
    513A  PRO      2.9    16.4    +      -       -      -
    514A  ARG      4.4     0.2    -      -       -      -
    516A  ALA*     1.3    77.2    -      -       -      +
    518A  SER*     1.3    57.8    +      -       -      +
    520A  THR*     3.7     8.1    -      -       -      -
    521A  MET*     2.9    46.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 518 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431A  PHE*     5.7     0.2    -      -       -      +
    433A  ILE*     3.6    27.8    -      -       -      +
    453A  GLY*     3.5     2.2    -      -       -      -
    454A  PHE*     3.0    33.8    +      -       -      +
    457A  ALA*     3.8     2.1    -      -       -      +
    459A  PHE*     3.2    17.7    -      -       -      -
    514A  ARG      3.0    23.8    +      -       -      -
    515A  LEU      3.7     3.1    -      -       -      -
    516A  ALA      3.2     0.6    -      -       -      -
    517A  SER*     1.3    77.7    -      -       -      +
    519A  ILE*     1.3    59.6    +      -       -      +
    522A  ARG*     3.4    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 519 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424A  TYR*     3.7    40.8    -      -       +      +
    427A  ILE*     3.5    23.6    -      -       +      +
    428A  ILE*     3.5    29.6    -      -       +      -
    433A  ILE*     3.6    26.9    -      -       +      -
    500A  TYR*     4.1    24.2    -      -       +      -
    503A  LEU*     4.8     6.5    -      -       +      -
    515A  LEU      3.4    13.2    +      -       -      +
    516A  ALA*     3.0     6.3    +      -       -      +
    518A  SER*     1.3    78.5    -      -       -      +
    520A  THR*     1.3    64.5    +      -       -      +
    522A  ARG*     3.4     2.4    +      -       -      +
    523A  GLY      3.1    15.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 520 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399A  SER*     5.7     0.2    -      -       -      -
    400A  PRO*     2.9    42.6    +      -       -      +
    401A  GLY      3.9     8.1    -      -       -      +
    424A  TYR*     3.8    24.9    +      -       +      +
    500A  TYR*     3.6    34.5    -      -       +      +
    516A  ALA      3.1    10.4    +      -       -      +
    517A  SER      3.7     1.2    +      -       -      -
    519A  ILE*     1.3    74.8    -      -       -      +
    521A  MET*     1.3    66.3    +      -       -      +
    523A  GLY*     3.0     3.2    +      -       -      +
    524A  HIS*     3.0    29.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 521 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400A  PRO*     3.7    26.9    -      -       +      -
    454A  PHE*     3.6    48.5    -      -       +      -
    455A  LEU*     3.7    18.4    -      -       +      -
    517A  SER*     2.9    40.6    +      -       -      +
    520A  THR*     1.3    71.3    +      -       -      +
    522A  ARG*     1.3    64.6    +      -       -      +
    524A  HIS*     3.1    23.6    +      -       -      +
    525A  GLN*     3.2    12.1    +      -       -      +
    528A  ARG*     5.2     0.3    +      -       -      -
    805T    G      4.1    15.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 522 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427A  ILE*     4.1     6.5    -      -       +      -
    431A  PHE*     3.4    57.1    -      -       +      +
    452A  GLU*     3.2    28.7    +      -       -      +
    453A  GLY*     4.2     3.0    +      -       -      -
    454A  PHE*     3.5    31.4    -      -       +      -
    518A  SER      3.4    18.8    +      -       -      +
    519A  ILE      3.4     5.3    +      -       -      +
    520A  THR      3.2     0.2    -      -       -      -
    521A  MET*     1.3    75.0    -      -       -      +
    523A  GLY*     1.3    60.3    +      -       -      +
    525A  GLN*     2.7    49.0    +      -       -      +
    526A  ILE*     2.8    38.0    +      -       +      +
    584A  GLN*     6.0     1.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 523 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  TYR*     5.0     0.7    -      -       -      -
    423A  LEU*     4.7     9.0    -      -       -      -
    424A  TYR*     5.0     4.0    -      -       -      -
    427A  ILE*     3.8    17.7    -      -       -      +
    519A  ILE      3.1     8.0    +      -       -      -
    520A  THR*     3.0    10.0    +      -       -      -
    522A  ARG*     1.3    77.6    -      -       -      +
    524A  HIS*     1.3    64.0    +      -       -      +
    526A  ILE*     3.3     5.0    +      -       -      +
    527A  MET*     3.0    31.5    +      -       -      +
    546A  THR      5.3     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 524 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400A  PRO*     4.0    26.2    -      -       +      -
    401A  GLY      2.5    29.3    +      -       -      -
    402A  GLY*     3.7     3.2    +      -       -      -
    403A  TYR*     3.5    36.9    +      +       +      -
    520A  THR      3.0    20.4    +      -       -      -
    521A  MET*     3.1    16.2    +      -       +      +
    523A  GLY*     1.3    78.5    -      -       -      +
    525A  GLN*     1.3    56.5    +      -       -      +
    527A  MET*     3.3     1.7    +      -       -      +
    528A  ARG*     3.0    46.8    +      -       -      +
    805T    G      5.8     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 525 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431A  PHE*     5.3     0.9    -      -       -      -
    454A  PHE*     4.9     7.4    -      -       +      -
    521A  MET      3.2     7.9    +      -       -      +
    522A  ARG*     2.7    47.6    +      -       -      +
    524A  HIS*     1.3    80.3    -      -       -      +
    526A  ILE*     1.3    63.5    +      -       -      +
    528A  ARG*     3.3    29.6    +      -       -      +
    529A  GLN*     3.0    25.9    +      -       +      +
    577A  TRP*     5.6     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 526 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420A  TYR*     3.6    32.1    -      -       +      -
    423A  LEU*     4.3     6.7    -      -       +      -
    427A  ILE*     3.8    23.3    -      -       +      -
    431A  PHE*     4.3    10.5    -      -       +      -
    522A  ARG*     2.8    24.1    +      -       +      +
    523A  GLY*     3.8     4.7    -      -       -      +
    525A  GLN*     1.3    76.4    -      -       +      +
    527A  MET*     1.3    55.6    +      -       +      +
    530A  THR*     2.5    36.9    +      -       -      -
    577A  TRP*     3.5    35.3    -      -       +      -
    590A  LEU*     3.8    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 527 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  TYR*     3.5    45.1    -      -       +      -
    420A  TYR*     4.1    18.4    -      -       -      -
    423A  LEU*     5.0     2.7    -      -       +      -
    523A  GLY      3.0    19.7    +      -       -      +
    524A  HIS      3.7     0.7    -      -       -      +
    526A  ILE*     1.3    74.2    -      -       -      +
    528A  ARG*     1.3    63.5    +      -       -      +
    530A  THR*     3.4     3.6    +      -       -      -
    531A  LYS*     3.1    21.8    +      -       -      +
    544A  GLY*     4.9     0.9    -      -       -      -
    545A  ASP      4.6     1.1    -      -       -      +
    546A  THR      3.3    27.6    -      -       -      +
    547A  ASP*     3.9    13.5    -      -       -      -
    548A  SER      3.6    29.8    -      -       -      +
    549A  THR*     3.7    16.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 528 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  TYR*     3.9    19.3    -      -       +      -
    521A  MET      5.2     0.4    +      -       -      -
    524A  HIS*     3.0    39.0    +      -       -      +
    525A  GLN*     3.4    38.0    -      -       -      +
    527A  MET*     1.3    72.3    -      -       -      +
    529A  GLN*     1.3    67.3    +      -       -      +
    531A  LYS*     3.2     8.7    +      -       -      +
    532A  ALA*     3.1    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 529 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    525A  GLN*     3.0    17.7    +      -       +      +
    526A  ILE      3.9     3.1    -      -       -      +
    528A  ARG*     1.3    77.3    -      -       -      +
    530A  THR*     1.3    58.0    +      -       -      +
    532A  ALA*     3.2    14.2    +      -       -      +
    533A  LEU*     2.8    61.8    +      -       +      +
    576A  TRP*     3.4    41.4    -      -       +      -
    577A  TRP*     4.0    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 530 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  LEU*     6.0     0.2    -      -       +      -
    420A  TYR*     2.5    42.1    +      -       +      +
    526A  ILE      2.5    21.2    +      -       -      -
    527A  MET*     3.6     7.4    -      -       -      -
    528A  ARG      3.2     0.2    -      -       -      -
    529A  GLN*     1.3    77.7    -      -       -      +
    531A  LYS*     1.3    61.1    +      -       -      +
    533A  LEU*     3.3    10.2    +      -       -      +
    534A  ILE*     3.1    27.9    +      -       +      +
    549A  THR*     3.7    22.9    -      -       -      +
    573A  VAL*     4.6     6.7    -      -       +      -
    577A  TRP*     4.3     0.9    -      -       -      -
    592A  LEU*     4.4    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 531 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  TYR*     4.0    17.6    +      -       -      +
    405A  MET*     3.8    29.6    -      -       -      +
    527A  MET      3.1    13.4    +      -       -      +
    528A  ARG*     3.5    10.1    -      -       -      +
    530A  THR*     1.3    79.1    -      -       -      +
    532A  ALA*     1.3    62.9    +      -       -      +
    534A  ILE*     3.5     2.0    +      -       -      +
    535A  GLU*     3.1    53.9    +      -       -      +
    541A  VAL*     3.7    32.1    +      -       +      -
    549A  THR*     5.0     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 532 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    528A  ARG      3.1    13.0    +      -       -      +
    529A  GLN*     3.2    21.1    +      -       -      +
    531A  LYS*     1.3    78.1    -      -       -      +
    533A  LEU*     1.3    62.5    +      -       -      +
    535A  GLU*     3.5    12.8    +      -       -      +
    536A  ALA*     3.1    24.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 533 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529A  GLN*     2.8    59.5    +      -       +      +
    530A  THR*     3.3     8.0    +      -       -      +
    532A  ALA*     1.3    77.8    -      -       -      +
    534A  ILE*     1.3    61.4    +      -       -      +
    536A  ALA*     3.4     9.1    -      -       +      +
    537A  GLN*     3.4    25.6    +      -       -      +
    572A  HIS*     4.9    13.2    +      -       +      +
    573A  VAL*     4.4    27.6    -      -       +      -
    576A  TRP*     3.8    46.2    -      -       +      +
    577A  TRP*     4.9     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 534 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  LEU*     3.6    23.1    -      -       +      -
    530A  THR*     3.1    25.1    +      -       +      +
    531A  LYS      3.9     3.4    -      -       -      +
    532A  ALA      3.3     0.2    -      -       -      -
    533A  LEU*     1.3    75.0    -      -       -      +
    535A  GLU*     1.3    58.8    +      -       -      +
    537A  GLN*     2.8    26.5    +      -       -      +
    538A  GLY      3.5     3.3    +      -       -      -
    539A  TYR*     3.5    11.1    +      -       +      +
    541A  VAL*     3.7    20.9    -      -       +      -
    549A  THR*     4.8     3.8    -      -       +      -
    551A  VAL*     3.7    26.0    -      -       +      -
    569A  LEU*     3.3    41.5    -      -       +      -
    573A  VAL*     4.9     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 535 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  ARG*     5.6     2.6    +      -       -      -
    531A  LYS*     3.1    49.0    +      -       -      +
    532A  ALA*     3.9    11.1    -      -       -      +
    534A  ILE*     1.3    75.4    -      -       -      +
    536A  ALA*     1.3    57.1    +      -       -      +
    538A  GLY*     2.9    19.6    +      -       -      -
    539A  TYR      3.3    19.6    +      -       -      +
    540A  ASP*     5.1     0.7    -      -       -      -
    541A  VAL*     4.1    14.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 536 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    532A  ALA      3.1    17.6    +      -       -      +
    533A  LEU*     3.4    11.4    -      -       +      +
    535A  GLU*     1.3    75.8    -      -       -      +
    537A  GLN*     1.3    68.1    +      -       -      +
    538A  GLY      3.1     1.2    +      -       -      -
----------------------------------------------------------
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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