Contacts of the helix formed by residues 532 - 558 (chain A) in PDB entry 4DKT


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASN 532 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498A  TYR*     4.3     0.5    +      -       -      -
    524A  GLN*     6.1     1.0    -      -       -      +
    528A  ASN      3.3    12.2    +      -       -      +
    529A  ILE*     3.0    19.4    +      -       -      +
    530A  LEU      3.2     1.3    -      -       -      -
    531A  SER*     1.3    76.6    -      -       -      +
    533A  LYS*     1.3    64.2    +      -       -      +
    534A  THR*     3.2    17.9    +      -       -      +
    535A  LEU*     3.5    32.1    +      -       +      +
    536A  ARG*     3.4    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 533 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    531A  SER      3.5    11.1    +      -       -      +
    532A  ASN*     1.3    73.0    +      -       -      +
    534A  THR*     1.3    65.6    +      -       -      +
    536A  ARG*     3.1    13.4    +      -       -      +
    537A  GLU*     2.9    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 534 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    532A  ASN*     3.2    10.8    +      -       -      +
    533A  LYS*     1.3    74.8    -      -       -      +
    535A  LEU*     1.3    67.6    +      -       -      +
    537A  GLU*     3.0    13.6    +      -       -      +
    538A  HIS*     2.9    55.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 535 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498A  TYR*     3.4     9.4    -      -       -      +
    524A  GLN*     6.1     0.7    -      -       -      +
    529A  ILE*     4.0    32.8    -      -       +      +
    532A  ASN*     3.5    32.8    +      -       -      +
    534A  THR*     1.3    80.6    -      -       -      +
    536A  ARG*     1.3    55.6    +      -       -      +
    538A  HIS*     3.2     7.6    +      -       +      +
    539A  ASN*     2.7    57.5    +      -       -      +
    570A  LEU*     5.0     4.5    -      -       +      -
    571A  PHE      3.5    14.1    -      -       -      +
    572A  LYS*     5.0     5.2    -      -       +      -
    582A  PHE*     4.1    35.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 536 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498A  TYR*     3.3    42.7    +      -       +      +
    502A  GLN*     4.8     8.3    +      -       -      +
    530A  LEU*     2.3    42.8    +      -       -      +
    531A  SER      5.1     0.4    -      -       -      -
    532A  ASN      3.4    12.0    +      -       -      +
    533A  LYS*     3.1    17.4    +      -       -      +
    534A  THR      3.0     0.8    -      -       -      -
    535A  LEU*     1.3    78.3    -      -       -      +
    537A  GLU*     1.3    60.0    +      -       +      +
    539A  ASN*     3.8     0.7    -      -       -      +
    540A  SER*     2.9    30.9    +      -       -      +
    708A  EDO      3.9    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 537 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    533A  LYS*     2.9    23.6    +      -       -      +
    534A  THR*     3.0    12.5    +      -       -      +
    536A  ARG*     1.3    74.1    -      -       -      +
    538A  HIS*     1.3    71.6    +      -       +      +
    540A  SER*     2.9    18.1    +      -       -      -
    541A  PHE*     2.9    14.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 538 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    534A  THR*     2.9    39.9    +      -       +      +
    535A  LEU*     3.3    11.6    -      -       -      +
    537A  GLU*     1.3    85.9    -      -       +      +
    539A  ASN*     1.3    60.7    +      -       -      +
    541A  PHE*     3.2     4.2    +      -       -      +
    542A  VAL*     2.9    32.5    +      -       +      +
    571A  PHE      4.6     4.7    -      -       -      +
    572A  LYS*     4.2     6.4    -      -       +      +
    573A  LEU*     3.3    62.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 539 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494A  PRO*     3.7    21.5    -      -       +      +
    498A  TYR*     3.6    24.9    +      -       +      -
    535A  LEU*     2.7    54.5    +      -       -      +
    536A  ARG      4.2     0.7    -      -       -      +
    538A  HIS*     1.3    72.0    -      -       -      +
    540A  SER*     1.3    59.6    +      -       -      +
    542A  VAL*     3.9     6.1    -      -       -      +
    543A  GLU*     2.9    28.5    +      -       -      +
    570A  LEU*     3.7     8.8    -      -       -      +
    571A  PHE*     2.7    36.7    +      -       -      +
    708A  EDO      3.7     5.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 540 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536A  ARG*     2.9    15.5    +      -       -      +
    537A  GLU*     2.9    13.0    +      -       -      -
    539A  ASN*     1.3    77.2    -      -       -      +
    541A  PHE*     1.3    57.7    +      -       -      +
    543A  GLU*     3.2    11.5    +      -       -      +
    544A  ARG*     2.9    31.3    +      -       -      +
    708A  EDO      3.8    18.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 541 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463A  TYR*     5.0     5.8    -      +       -      -
    466A  TRP*     4.6    13.5    -      +       +      -
    537A  GLU      2.9    11.1    +      -       -      +
    538A  HIS*     3.5     6.5    -      -       -      +
    540A  SER*     1.3    74.0    -      -       -      +
    542A  VAL*     1.3    70.3    +      -       +      +
    544A  ARG*     2.8    27.1    +      -       +      +
    545A  CYS*     3.0    37.9    +      -       -      -
    573A  LEU*     3.7    36.8    -      -       +      -
    577A  SER*     4.7     6.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 542 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466A  TRP*     3.5    27.1    -      -       +      -
    494A  PRO*     4.1     4.3    -      -       +      -
    538A  HIS      2.9    21.1    +      -       -      +
    539A  ASN*     3.9     6.5    -      -       -      +
    541A  PHE*     1.3    78.4    -      -       +      +
    543A  GLU*     1.3    63.8    +      -       -      +
    545A  CYS*     3.0     8.2    +      -       -      +
    546A  ILE*     2.9    44.6    +      -       +      +
    571A  PHE*     3.7    36.6    -      -       +      -
    573A  LEU*     4.0    21.3    -      -       +      -
    579A  ALA*     4.1     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 543 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494A  PRO*     4.7    11.8    -      -       +      +
    495A  ARG*     2.9    53.7    +      -       -      +
    539A  ASN      2.9    21.2    +      -       -      +
    540A  SER*     3.2    10.8    +      -       -      +
    541A  PHE      3.1     0.2    -      -       -      -
    542A  VAL*     1.3    76.8    -      -       -      +
    544A  ARG*     1.3    66.5    +      -       +      +
    546A  ILE*     4.0     4.3    -      -       -      +
    547A  ASP*     2.9    46.7    +      -       -      +
    708A  EDO      3.7    14.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 544 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    540A  SER      2.9    20.8    +      -       -      +
    541A  PHE*     2.8    20.9    +      -       +      +
    543A  GLU*     1.3    79.5    -      -       -      +
    545A  CYS*     1.3    57.0    +      -       -      +
    547A  ASP*     3.2     8.0    +      -       -      +
    548A  TRP*     2.9    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 545 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463A  TYR*     4.3    13.9    -      -       +      -
    466A  TRP*     3.6    39.7    -      -       +      +
    541A  PHE*     3.0    52.4    +      -       -      -
    542A  VAL      3.0     6.3    +      -       -      +
    544A  ARG*     1.3    73.4    -      -       -      +
    546A  ILE*     1.3    66.8    +      -       -      +
    548A  TRP*     3.1    10.4    +      -       -      +
    549A  ASN*     3.1    27.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 546 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466A  TRP*     3.6    22.9    -      -       +      -
    475A  PHE*     4.4    11.4    -      -       +      -
    491A  LEU*     4.3    23.7    -      -       +      +
    492A  ALA*     3.5    39.7    -      -       +      +
    494A  PRO*     4.1    12.3    -      -       +      -
    542A  VAL*     2.9    32.9    +      -       +      +
    543A  GLU*     4.0     3.4    -      -       -      +
    545A  CYS*     1.3    74.8    -      -       -      +
    547A  ASP*     1.3    60.7    +      -       -      +
    549A  ASN*     3.3    11.0    +      -       -      +
    550A  ARG*     2.9    24.0    +      -       +      +
    571A  PHE*     4.3     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 547 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    543A  GLU*     2.9    45.8    +      -       -      +
    544A  ARG*     3.5     7.0    -      -       -      +
    546A  ILE*     1.3    78.5    -      -       -      +
    548A  TRP*     1.3    65.9    +      -       -      +
    550A  ARG*     2.8    34.1    +      -       +      +
    551A  GLU*     3.0    20.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 548 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434A  CYS*     3.8    22.4    -      -       -      -
    463A  TYR*     4.1    24.5    -      +       +      -
    544A  ARG      2.9    12.8    +      -       -      +
    545A  CYS*     3.3    12.1    -      -       -      +
    547A  ASP*     1.3    74.5    -      -       -      +
    549A  ASN*     1.3    59.0    +      -       -      +
    551A  GLU*     3.4     7.6    +      -       +      +
    552A  LEU*     3.0    45.9    +      -       +      +
    709A  EDO      4.0     7.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 549 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462A  LEU*     3.1    17.2    -      -       +      +
    463A  TYR*     2.7    54.1    +      -       -      +
    466A  TRP*     3.9     4.2    -      -       -      +
    475A  PHE*     3.5    30.6    -      -       +      -
    491A  LEU*     5.7     0.9    -      -       +      -
    545A  CYS      3.1    24.7    +      -       -      -
    546A  ILE*     3.5     8.0    -      -       -      +
    548A  TRP*     1.3    78.0    -      -       -      +
    550A  ARG*     1.3    57.4    +      -       -      +
    552A  LEU*     3.3     7.5    -      -       -      +
    553A  LEU*     2.9    36.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 550 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489A  LEU*     6.1     0.2    -      -       -      -
    491A  LEU*     3.8    29.0    -      -       +      +
    546A  ILE      2.9    13.5    +      -       -      +
    547A  ASP*     2.8    28.6    +      -       -      +
    549A  ASN*     1.3    78.3    -      -       -      +
    551A  GLU*     1.3    67.5    +      -       -      +
    553A  LEU*     3.5     4.8    +      -       -      +
    554A  LYS*     2.9    34.9    +      -       +      +
    561A  GLU*     2.5    43.4    +      -       -      -
    564A  ILE*     3.8    26.2    +      -       +      +
    566A  ASP*     2.9    41.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 551 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    547A  ASP*     3.0    17.4    +      -       +      +
    548A  TRP*     3.9     8.5    -      -       +      +
    550A  ARG*     1.3    82.1    -      -       -      +
    552A  LEU*     1.3    67.2    +      -       -      +
    554A  LYS*     3.1    38.6    +      -       -      +
    555A  ARG*     2.9    27.7    +      -       -      +
    561A  GLU*     5.0     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 552 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460A  VAL*     5.4     0.2    -      -       +      -
    461A  LYS      3.7    23.6    -      -       -      +
    462A  LEU*     4.1    19.1    -      -       +      -
    548A  TRP*     3.0    39.6    +      -       +      +
    549A  ASN*     3.3    17.0    -      -       -      +
    551A  GLU*     1.3    75.2    -      -       -      +
    553A  LEU*     1.3    59.1    +      -       -      +
    555A  ARG*     3.0    39.0    +      -       -      +
    556A  GLU*     2.9    37.3    +      -       +      +
    709A  EDO      4.3     9.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 553 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    429A  LEU*     4.2    13.0    -      -       +      -
    460A  VAL*     5.5     2.0    -      -       +      -
    462A  LEU*     3.7    31.0    -      -       +      -
    476A  LEU*     3.9    22.7    -      -       +      -
    478A  PHE*     5.6     0.4    -      -       +      -
    489A  LEU*     3.6    33.0    -      -       +      -
    491A  LEU*     4.5    10.1    -      -       +      -
    549A  ASN*     2.9    25.9    +      -       +      +
    550A  ARG*     3.8     4.3    -      -       -      +
    552A  LEU*     1.3    70.3    -      -       -      +
    554A  LYS*     1.3    61.7    +      -       +      +
    556A  GLU*     4.6     2.7    -      -       +      +
    557A  LEU*     2.9    60.0    +      -       +      +
    559A  LEU*     4.1     3.3    -      -       +      +
    564A  ILE*     6.4     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 554 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    550A  ARG*     2.9    24.5    +      -       -      +
    551A  GLU*     3.1    43.5    +      -       -      +
    553A  LEU*     1.3    74.3    -      -       -      +
    555A  ARG*     1.3    57.2    +      -       -      +
    558A  GLY*     3.0    23.6    +      -       -      -
    559A  LEU*     3.1    34.2    +      -       +      +
    560A  ALA*     4.8     3.8    -      -       -      -
    561A  GLU*     2.9    31.3    +      -       +      +
    564A  ILE*     4.0    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 555 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  VAL*     3.4    19.1    -      -       -      +
    419A  ARG*     3.8    28.8    +      -       -      +
    551A  GLU*     2.9    12.9    +      -       -      +
    552A  LEU*     3.5    39.1    -      -       -      +
    554A  LYS*     1.3    79.9    -      -       -      +
    556A  GLU*     1.3    85.5    +      -       -      +
    558A  GLY*     3.5     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 556 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  VAL*     3.0    18.6    -      -       -      +
    419A  ARG*     5.7     2.8    +      -       -      -
    427A  ARG*     3.1    36.9    +      -       -      +
    460A  VAL*     3.8    37.5    -      -       +      +
    552A  LEU*     2.9    22.0    +      -       +      +
    553A  LEU*     4.7     1.8    -      -       +      +
    555A  ARG*     1.3   113.1    +      -       -      +
    557A  LEU*     1.3    63.0    +      -       +      +
    558A  GLY      3.5     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 557 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    413A  SER*     4.0    16.4    -      -       -      +
    416A  VAL*     2.8    37.1    -      -       +      +
    417A  THR      4.2     0.3    -      -       -      +
    418A  VAL*     3.5     9.2    -      -       -      +
    427A  ARG*     4.1    24.9    -      -       +      -
    429A  LEU*     4.3     9.4    -      -       +      -
    460A  VAL*     5.0     0.7    -      -       +      -
    478A  PHE*     4.0    24.5    -      -       +      -
    487A  PHE*     6.2     0.7    -      -       +      -
    553A  LEU*     2.9    42.0    +      -       +      +
    556A  GLU*     1.3    89.4    -      -       +      +
    558A  GLY*     1.3    63.0    +      -       -      +
    559A  LEU*     3.5    22.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 558 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417A  THR      4.4     8.6    -      -       -      +
    418A  VAL*     3.7    13.7    -      -       -      +
    419A  ARG      5.6     0.4    -      -       -      -
    485A  LYS*     2.7    28.8    +      -       -      -
    554A  LYS      3.0    11.9    +      -       -      -
    555A  ARG      3.5     5.6    +      -       -      -
    556A  GLU      3.5     3.2    -      -       -      -
    557A  LEU*     1.3    78.2    -      -       -      +
    559A  LEU*     1.3    53.3    +      -       -      +
----------------------------------------------------------
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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