Contacts of the helix formed by residues 512 - 537 (chain B) in PDB entry 3K5N


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 B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394B  VAL*     3.7    13.3    -      -       -      +
    438B  LEU*     3.2    18.1    -      -       +      +
    503B  LEU      4.4     0.4    +      -       -      +
    510B  PHE      3.5     3.4    +      -       -      -
    511B  PHE*     1.3    84.3    -      -       -      +
    513B  PRO*     1.3    79.1    -      -       -      +
    514B  ARG*     2.9    48.2    +      -       -      +
    515B  LEU*     2.8    36.9    +      -       +      +
    516B  ALA*     3.4     4.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 513 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394B  VAL*     3.5    13.7    -      -       +      -
    395B  PRO      3.5    19.7    -      -       -      +
    396B  PRO*     3.9    12.6    -      -       +      -
    397B  HIS*     3.9    22.4    -      -       +      +
    455B  LEU*     4.7     6.3    -      -       +      -
    511B  PHE*     3.9    11.2    -      -       +      -
    512B  ASP*     1.3    96.1    -      -       -      +
    514B  ARG*     1.3    58.3    +      -       +      +
    516B  ALA*     3.5     3.2    +      -       +      +
    517B  SER*     2.3    37.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 514 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    438B  LEU*     3.5    30.7    -      -       +      +
    442B  MET*     3.9    21.6    -      -       -      +
    455B  LEU*     4.3    37.7    -      -       +      +
    457B  ALA*     4.4    12.3    -      -       +      +
    459B  PHE*     4.6     0.2    -      -       -      -
    512B  ASP*     2.9    38.4    +      -       -      +
    513B  PRO*     1.3    78.1    -      -       +      +
    515B  LEU*     1.3    57.3    +      -       -      +
    517B  SER*     4.2     2.7    -      -       -      -
    518B  SER*     2.4    35.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 515 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433B  ILE*     3.9    23.9    -      -       +      +
    434B  ASP      4.0     4.7    -      -       -      +
    435B  PRO*     3.7    42.0    -      -       +      -
    438B  LEU*     5.0     6.0    -      -       +      +
    459B  PHE*     4.2     7.2    -      -       +      -
    503B  LEU*     4.0    22.9    -      -       +      +
    510B  PHE      2.8    30.7    -      -       -      +
    512B  ASP*     2.8    26.4    +      -       +      +
    514B  ARG*     1.3    81.7    -      -       -      +
    516B  ALA*     1.3    58.8    +      -       -      +
    518B  SER*     4.3     1.1    -      -       -      -
    519B  ILE*     3.5    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 516 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    500B  TYR*     5.2    11.7    -      -       +      +
    503B  LEU*     4.1    22.4    +      -       -      +
    504B  GLY*     4.3    12.8    -      -       -      +
    511B  PHE*     5.7     2.0    -      -       +      -
    512B  ASP      3.4     4.0    +      -       -      +
    513B  PRO*     3.5     6.0    +      -       +      +
    515B  LEU*     1.3    78.8    -      -       -      +
    517B  SER*     1.3    61.5    +      -       -      +
    519B  ILE*     2.9    29.9    +      -       -      +
    520B  THR*     3.1    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 517 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  PHE*     5.0     1.1    -      -       -      -
    455B  LEU*     4.1    23.4    -      -       -      +
    513B  PRO*     2.3    29.6    +      -       -      +
    514B  ARG*     4.3     1.6    -      -       -      -
    516B  ALA*     1.3    73.0    -      -       -      +
    518B  SER*     1.3    68.7    +      -       -      +
    519B  ILE      2.8     1.3    -      -       -      -
    520B  THR*     2.7    19.6    +      -       -      -
    521B  MET*     2.8    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 518 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433B  ILE*     3.4    25.5    -      -       -      +
    453B  GLY*     4.5     3.4    -      -       -      -
    454B  PHE*     3.8    25.6    +      -       -      +
    457B  ALA*     3.6     9.2    -      -       -      +
    459B  PHE*     3.5    21.4    -      -       -      -
    514B  ARG      2.4    27.8    +      -       -      -
    515B  LEU      4.3     0.7    -      -       -      -
    517B  SER*     1.3    78.7    -      -       -      +
    519B  ILE*     1.3    65.1    +      -       -      +
    522B  ARG*     3.5    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 519 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424B  TYR*     3.0    37.8    -      -       +      +
    427B  ILE*     3.7    14.7    -      -       +      +
    428B  ILE*     2.5    45.1    -      -       +      -
    433B  ILE*     4.1    12.8    -      -       +      -
    500B  TYR*     3.6    25.1    -      -       +      -
    503B  LEU*     4.9     7.6    -      -       +      -
    515B  LEU      3.5    13.7    +      -       -      +
    516B  ALA*     2.9    15.1    +      -       -      +
    517B  SER      2.8     1.2    -      -       -      -
    518B  SER*     1.3    83.5    -      -       -      +
    520B  THR*     1.3    58.9    +      -       -      +
    522B  ARG*     4.0     0.2    -      -       -      +
    523B  GLY      3.7     8.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 520 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424B  TYR*     2.9    34.3    -      -       +      +
    500B  TYR*     3.7    19.0    +      -       +      +
    516B  ALA*     3.2    12.0    +      -       -      +
    517B  SER*     2.7    15.5    +      -       -      -
    519B  ILE*     1.3    71.4    -      -       -      +
    521B  MET*     1.3    54.5    +      -       -      +
    522B  ARG      2.8     5.4    -      -       -      -
    523B  GLY*     2.3    27.5    +      -       -      +
    524B  HIS*     2.9    28.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with MET 521 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  PHE*     2.6    75.0    -      -       +      -
    455B  LEU*     4.9    10.5    -      -       +      +
    517B  SER*     2.8    25.5    +      -       -      +
    520B  THR*     1.3    72.9    -      -       -      +
    522B  ARG*     1.3    56.6    +      -       -      +
    524B  HIS*     3.4    24.1    +      -       +      +
    525B  GLN*     2.9    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 522 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427B  ILE*     3.7     9.6    -      -       +      +
    431B  PHE*     2.4    78.3    -      -       -      +
    433B  ILE*     5.4     1.8    -      -       -      +
    451B  THR*     6.0     0.6    -      -       -      +
    452B  GLU      3.3    24.2    +      -       -      -
    453B  GLY*     4.5     1.8    -      -       -      -
    454B  PHE*     3.7    24.0    -      -       +      -
    518B  SER*     3.5    20.9    +      -       -      +
    519B  ILE      4.0     2.0    -      -       -      +
    520B  THR      2.8     0.8    -      -       -      -
    521B  MET*     1.3    78.0    -      -       -      +
    523B  GLY*     1.3    60.8    +      -       -      +
    525B  GLN*     3.3    21.8    +      -       -      +
    526B  ILE*     2.8    46.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 523 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423B  LEU*     4.8    10.0    -      -       -      +
    424B  TYR*     5.0     5.8    -      -       -      -
    427B  ILE*     3.9    16.8    -      -       -      +
    519B  ILE      3.7     4.1    +      -       -      -
    520B  THR*     2.3    23.4    +      -       -      -
    522B  ARG*     1.3    66.6    -      -       -      +
    524B  HIS*     1.3    66.9    +      -       -      -
    526B  ILE*     3.0     6.9    +      -       -      +
    527B  MET*     2.8    24.3    +      -       -      +
    546B  THR      5.3     5.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 524 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424B  TYR*     5.5     0.7    -      -       -      -
    520B  THR*     2.9    26.7    +      -       +      -
    521B  MET*     3.6    30.9    +      -       +      +
    523B  GLY*     1.3    75.6    -      -       -      +
    525B  GLN*     1.3    50.6    +      -       -      +
    527B  MET*     2.7    24.6    +      -       -      +
    528B  ARG*     2.4    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 525 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431B  PHE*     5.4     0.8    -      -       -      -
    454B  PHE*     4.0    19.3    -      -       +      -
    521B  MET      2.9    15.1    +      -       -      +
    522B  ARG*     3.3    30.1    +      -       -      +
    524B  HIS*     1.3    76.9    -      -       -      +
    526B  ILE*     1.3    68.1    +      -       +      +
    528B  ARG*     3.1    17.9    +      -       -      +
    529B  GLN*     3.2    22.8    +      -       +      +
    577B  TRP*     4.5    20.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 526 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  TYR*     3.8    20.6    -      -       +      +
    423B  LEU*     5.1     4.7    -      -       +      -
    427B  ILE*     4.6     7.4    -      -       +      -
    431B  PHE*     4.2    11.0    -      -       +      -
    522B  ARG*     2.8    46.6    +      -       +      +
    523B  GLY*     3.5     6.1    -      -       -      +
    525B  GLN*     1.3    78.5    -      -       +      +
    527B  MET*     1.3    58.2    +      -       -      +
    529B  GLN*     4.0     0.2    -      -       -      +
    530B  THR*     2.4    45.8    +      -       -      +
    577B  TRP*     3.5    27.1    -      -       +      -
    590B  LEU*     3.9    32.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 527 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  TYR*     4.5    12.1    -      -       +      -
    423B  LEU*     5.7     2.5    -      -       -      -
    523B  GLY      2.8    10.2    +      -       -      +
    524B  HIS*     2.7    15.7    +      -       -      +
    526B  ILE*     1.3    78.7    -      -       -      +
    528B  ARG*     1.3    66.3    +      -       +      +
    530B  THR*     3.1    12.9    +      -       -      +
    531B  LYS*     3.0    21.4    +      -       -      +
    544B  GLY*     5.3     4.7    -      -       -      -
    545B  ASP      3.6    17.5    -      -       -      +
    546B  THR*     3.7    20.0    -      -       -      +
    547B  ASP*     4.1     7.9    -      -       -      -
    548B  SER      4.0    10.5    -      -       -      +
    549B  THR*     2.9    38.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 528 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    524B  HIS*     2.4    40.7    +      -       -      +
    525B  GLN*     3.1    20.8    +      -       -      +
    527B  MET*     1.3    76.4    -      -       +      +
    529B  GLN*     1.3    59.1    +      -       -      +
    531B  LYS*     2.4    40.7    +      -       +      +
    532B  ALA*     2.8     6.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 529 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    525B  GLN*     3.2    15.8    +      -       +      +
    526B  ILE      4.0     0.2    -      -       -      +
    528B  ARG*     1.3    76.1    -      -       -      +
    530B  THR*     1.3    71.0    +      -       -      +
    531B  LYS      2.9     1.6    -      -       -      -
    532B  ALA*     4.1    10.8    -      -       -      +
    533B  LEU*     2.9    46.4    +      -       +      +
    576B  TRP*     3.1    36.2    -      -       +      -
    577B  TRP*     4.0    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 530 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418B  LEU*     6.3     0.4    -      -       +      -
    420B  TYR*     3.2    32.5    +      -       +      +
    526B  ILE*     2.4    32.3    +      -       -      +
    527B  MET*     3.1    12.8    +      -       -      -
    529B  GLN*     1.3    75.6    -      -       -      +
    531B  LYS*     1.3    58.7    +      -       -      +
    533B  LEU*     3.5     7.6    +      -       -      +
    534B  ILE*     2.9    32.6    +      -       +      +
    549B  THR*     4.7    12.1    -      -       +      +
    573B  VAL*     4.0    18.6    -      -       +      +
    577B  TRP*     4.4     3.6    -      -       -      -
    592B  LEU*     4.1    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 531 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527B  MET      3.0    10.0    +      -       -      +
    528B  ARG*     2.4    34.7    +      -       +      +
    529B  GLN      2.9     0.6    -      -       -      -
    530B  THR*     1.3    76.5    -      -       -      +
    532B  ALA*     1.3    77.5    -      -       +      +
    534B  ILE*     3.1     6.7    +      -       -      +
    535B  GLU*     3.1    50.1    +      -       -      +
    541B  VAL*     4.0    36.1    +      -       +      +
    549B  THR*     6.0     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 532 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    528B  ARG      2.8     9.0    +      -       -      +
    529B  GLN*     3.1    17.7    +      -       -      +
    531B  LYS*     1.3    84.1    -      -       +      +
    533B  LEU*     1.3    68.2    +      -       +      +
    535B  GLU*     3.3    11.2    +      -       -      +
    536B  ALA*     2.9    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 533 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529B  GLN*     2.9    51.8    +      -       +      +
    530B  THR*     3.6     4.5    -      -       -      +
    532B  ALA*     1.3    80.3    -      -       +      +
    534B  ILE*     1.3    64.9    +      -       -      +
    536B  ALA*     2.8    24.2    +      -       -      +
    537B  GLN*     3.4     3.6    +      -       -      +
    572B  HIS*     4.0    27.0    -      -       +      +
    573B  VAL*     4.5    18.8    -      -       +      -
    576B  TRP*     3.4    52.5    -      -       +      -
    577B  TRP*     5.4     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 534 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418B  LEU*     4.8    13.5    -      -       +      -
    530B  THR*     2.9    23.3    +      -       +      +
    531B  LYS*     3.1     4.5    +      -       -      +
    533B  LEU*     1.3    76.7    -      -       -      +
    535B  GLU*     1.3    66.9    +      -       +      +
    537B  GLN*     3.3    14.6    +      -       -      +
    539B  TYR*     3.9    20.0    +      -       +      +
    540B  ASP      4.9     1.8    -      -       -      +
    541B  VAL*     3.8    28.3    -      -       +      -
    549B  THR*     5.5     3.6    -      -       -      +
    551B  VAL*     4.9     6.3    -      -       +      -
    569B  LEU*     3.4    51.6    -      -       +      -
    572B  HIS*     5.8     1.6    -      -       -      +
    573B  VAL*     4.7    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 535 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    531B  LYS*     3.1    39.8    +      -       -      +
    532B  ALA*     3.7    10.5    -      -       -      +
    534B  ILE*     1.3    80.9    -      -       +      +
    536B  ALA*     1.3    53.8    +      -       -      +
    537B  GLN      2.5     6.1    +      -       -      -
    538B  GLY*     2.4    32.7    +      -       -      -
    539B  TYR      3.4    23.7    +      -       -      +
    540B  ASP*     4.8     4.7    -      -       -      +
    541B  VAL*     4.8    12.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 536 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    532B  ALA      2.9    13.4    +      -       -      +
    533B  LEU*     2.8    18.5    +      -       -      +
    535B  GLU*     1.3    76.8    -      -       -      +
    537B  GLN*     1.3    61.0    +      -       +      +
    538B  GLY      3.3     1.0    +      -       -      -
    572B  HIS*     5.8     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 537 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    533B  LEU      3.4     1.5    +      -       -      +
    534B  ILE*     3.3    11.3    +      -       -      +
    535B  GLU      2.5     5.9    +      -       -      -
    536B  ALA*     1.3    79.7    -      -       +      +
    538B  GLY*     1.3    57.7    +      -       -      -
    539B  TYR*     3.6    12.2    +      -       +      -
    568B  ALA*     5.3     2.4    +      -       -      +
    569B  LEU*     3.2    35.3    -      -       +      +
    572B  HIS*     4.2    39.5    +      -       +      +
----------------------------------------------------------
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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