Contacts of the helix formed by residues 488 - 514 (chain C) in PDB entry 2HYE


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 THR 488 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476C  LEU*     4.4    10.1    -      -       +      +
    479C  LEU*     3.5    35.7    -      -       +      -
    480C  LYS*     3.7    16.5    -      -       -      +
    484C  GLY      3.5    11.6    +      -       -      +
    485C  ALA      3.8     2.3    +      -       -      -
    487C  PHE*     1.3    90.0    -      -       +      +
    489C  SER*     1.3    68.1    +      -       -      +
    490C  LYS      3.0     4.5    +      -       -      -
    491C  LEU*     3.1    22.7    +      -       +      +
    492C  GLU*     2.8    35.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 489 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    485C  ALA      3.1    17.6    +      -       -      -
    486C  ALA*     2.8    23.1    +      -       -      -
    488C  THR*     1.3    76.8    -      -       -      +
    490C  LYS*     1.3    65.3    +      -       -      +
    492C  GLU*     3.3    10.5    +      -       -      +
    493C  GLY*     3.2    12.8    +      -       -      -
     74D  VAL*     5.1     5.7    -      -       -      +
    102D  GLU*     6.0     1.7    -      -       -      -
    104D  GLN*     3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 490 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450C  GLU*     4.3    20.5    +      -       -      +
    454C  LYS*     3.7    28.0    -      -       +      +
    486C  ALA      4.3     5.9    +      -       -      +
    487C  PHE      5.5     1.6    +      -       -      +
    488C  THR      3.0     1.6    +      -       -      -
    489C  SER*     1.3    78.1    -      -       -      +
    491C  LEU*     1.3    55.4    +      -       +      +
    493C  GLY*     2.6    24.9    +      -       -      -
    494C  MET*     2.9    13.7    +      -       -      +
    532C  TYR*     3.6    33.2    -      -       -      +
    695C  GLN*     5.9     2.8    -      -       -      +
    104D  GLN*     2.9    55.6    +      -       +      +
    105D  LYS*     4.7     6.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 491 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450C  GLU*     4.4    16.6    -      -       -      +
    453C  TYR*     3.8    25.4    -      -       +      -
    454C  LYS*     3.5    44.2    -      -       +      +
    457C  LEU*     4.7     6.2    -      -       +      +
    476C  LEU*     3.4    32.8    -      -       +      -
    479C  LEU*     4.5    12.3    -      -       +      -
    487C  PHE*     5.8     1.8    -      -       +      -
    488C  THR*     3.1    13.8    +      -       +      +
    490C  LYS*     1.3    77.8    -      -       +      +
    492C  GLU*     1.3    62.8    +      -       -      +
    494C  MET*     3.0    25.6    +      -       +      +
    495C  PHE*     3.2    15.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 492 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476C  LEU*     4.4    22.1    -      -       +      +
    480C  LYS*     3.5    32.4    +      -       -      -
    485C  ALA*     4.1     6.0    -      -       -      +
    488C  THR*     2.8    38.2    +      -       -      +
    489C  SER*     3.5    10.8    -      -       -      +
    491C  LEU*     1.3    76.8    -      -       -      +
    493C  GLY*     1.3    59.3    +      -       -      +
    495C  PHE*     3.6     6.0    +      -       -      +
    496C  LYS*     3.3    22.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 493 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489C  SER      3.2     5.2    +      -       -      -
    490C  LYS      2.6    17.5    +      -       -      -
    492C  GLU*     1.3    70.9    -      -       -      +
    494C  MET*     1.3    65.2    +      -       -      -
    495C  PHE      3.0     2.6    +      -       -      -
    496C  LYS*     3.1     8.5    +      -       -      +
    497C  ASP*     3.0    25.8    +      -       -      +
    532C  TYR*     3.8    25.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 494 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454C  LYS*     3.7    34.8    -      -       +      +
    457C  LEU*     3.9    15.5    -      -       +      -
    458C  ALA*     3.8    35.9    -      -       +      +
    461C  LEU*     4.6     8.9    -      -       +      +
    490C  LYS      2.9     5.5    +      -       -      +
    491C  LEU*     3.0    27.1    +      -       +      +
    493C  GLY*     1.3    76.1    -      -       -      +
    495C  PHE*     1.3    63.6    +      -       -      +
    497C  ASP*     3.5     5.5    +      -       -      +
    498C  MET*     3.4    13.7    +      -       -      +
    532C  TYR*     4.4     2.2    -      -       +      +
    533C  TRP*     3.5    59.8    -      -       +      +
    534C  PRO*     4.4     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 495 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457C  LEU*     4.0    19.3    -      -       +      -
    461C  LEU*     4.1    28.7    -      -       +      -
    469C  VAL*     5.7     6.1    -      -       +      -
    472C  GLU*     3.4    36.6    -      -       +      -
    473C  LYS*     5.3    16.8    -      -       +      -
    476C  LEU*     3.5    33.4    -      -       +      -
    491C  LEU      3.2    12.3    +      -       -      -
    492C  GLU*     3.7     8.7    -      -       -      +
    494C  MET*     1.3    78.2    -      -       -      +
    496C  LYS*     1.3    58.6    +      -       -      +
    498C  MET*     2.6    36.8    +      -       +      +
    499C  GLU*     3.2    11.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 496 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492C  GLU      3.3    13.3    +      -       -      +
    493C  GLY*     3.1    11.7    +      -       -      +
    495C  PHE*     1.3    76.4    -      -       -      +
    497C  ASP*     1.3    56.0    +      -       -      +
    499C  GLU*     2.7    61.8    +      -       +      +
    500C  LEU*     3.0    27.9    +      -       +      +
    532C  TYR*     6.1     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 497 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    493C  GLY      3.0     7.3    +      -       -      +
    494C  MET      3.5    11.2    -      -       -      +
    495C  PHE      3.1     0.2    -      -       -      -
    496C  LYS*     1.3    76.1    -      -       -      +
    498C  MET*     1.3    53.9    +      -       -      +
    500C  LEU*     3.9    19.6    -      -       -      +
    501C  SER*     2.6    39.0    +      -       -      -
    527C  ILE*     3.8    16.5    -      -       -      +
    528C  LEU*     4.5     0.7    -      -       +      -
    529C  THR*     2.8    51.6    +      -       -      -
    532C  TYR*     3.7     8.5    -      -       -      -
    533C  TRP*     3.6    16.5    +      -       +      +
     33D  TRP*     4.3     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 498 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    461C  LEU*     2.9    65.1    -      -       +      +
    462C  LEU*     3.8     7.9    -      -       +      -
    494C  MET      3.4     4.0    +      -       -      +
    495C  PHE*     2.6    28.5    +      -       +      +
    497C  ASP*     1.3    75.0    -      -       -      +
    499C  GLU*     1.3    59.0    +      -       +      +
    501C  SER*     3.4     5.1    +      -       -      -
    502C  LYS*     3.3    33.2    +      -       -      +
    526C  ASN*     3.1    30.3    +      -       -      +
    528C  LEU*     4.7     2.0    -      -       -      -
    533C  TRP*     4.1    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 499 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    495C  PHE*     4.1     7.8    -      -       -      +
    496C  LYS*     2.7    54.4    +      -       +      +
    498C  MET*     1.3    75.1    -      -       +      +
    500C  LEU*     1.3    61.3    +      -       +      +
    502C  LYS*     3.2    22.5    -      -       +      +
    503C  ASP*     3.0    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 500 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    496C  LYS*     3.0    29.9    +      -       +      +
    497C  ASP*     3.9    23.3    -      -       -      +
    499C  GLU*     1.3    74.2    -      -       +      +
    501C  SER*     1.3    66.7    +      -       -      +
    502C  LYS      3.0     1.6    -      -       -      -
    503C  ASP*     3.0    17.5    +      -       -      +
    504C  ILE*     2.9    37.7    +      -       +      +
    527C  ILE*     5.4     3.6    -      -       +      -
    562C  HIS*     6.4     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 501 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497C  ASP      2.6    23.4    +      -       -      -
    498C  MET      3.6     4.0    -      -       -      -
    499C  GLU      3.4     0.2    -      -       -      -
    500C  LEU*     1.3    74.9    -      -       -      +
    502C  LYS*     1.3    56.9    +      -       -      +
    504C  ILE*     4.0     3.7    -      -       -      +
    505C  MET*     3.0    36.2    +      -       -      +
    525C  VAL      4.1     1.6    -      -       -      +
    526C  ASN*     3.1    31.8    +      -       -      -
    527C  ILE*     3.0    38.7    +      -       -      +
    528C  LEU*     5.1     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 502 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498C  MET*     3.3    21.5    +      -       -      +
    499C  GLU*     3.2    21.2    +      -       +      +
    500C  LEU      3.0     0.4    -      -       -      -
    501C  SER*     1.3    76.4    -      -       -      +
    503C  ASP*     1.3    70.3    +      -       -      +
    505C  MET*     3.1     8.4    +      -       -      +
    506C  VAL*     2.9    25.0    +      -       +      +
    526C  ASN*     6.0     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 503 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    499C  GLU*     3.0    19.0    -      -       -      +
    500C  LEU*     3.3    22.7    -      -       +      +
    502C  LYS*     1.3    77.2    -      -       -      +
    504C  ILE*     1.3    68.2    +      -       +      +
    506C  VAL*     2.8    26.3    +      -       -      +
    507C  HIS*     3.3    15.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 504 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    500C  LEU*     2.9    25.3    +      -       +      +
    501C  SER*     4.0     4.3    -      -       -      +
    503C  ASP*     1.3    80.5    -      -       +      +
    505C  MET*     1.3    57.4    +      -       +      +
    507C  HIS*     2.7    35.5    +      -       +      +
    508C  PHE*     2.9    10.9    +      -       -      +
    527C  ILE*     4.4    12.6    -      -       +      -
    554C  PHE*     4.4    25.8    -      -       +      -
    557C  PHE*     4.5    13.5    -      -       +      -
    558C  TYR*     3.7    34.1    -      -       +      -
    562C  HIS*     4.0    15.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 505 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501C  SER*     3.0    20.5    +      -       -      +
    502C  LYS*     3.1     9.4    +      -       -      +
    504C  ILE*     1.3    81.3    -      -       +      +
    506C  VAL*     1.3    61.1    +      -       +      +
    508C  PHE*     3.6    13.6    +      -       -      +
    509C  LYS*     3.2    33.6    +      -       +      +
    523C  LEU      4.6     4.3    -      -       -      +
    524C  THR*     4.0    25.8    -      -       +      -
    525C  VAL*     3.0    41.5    -      -       +      +
    554C  PHE*     3.7    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 506 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502C  LYS*     2.9    17.6    +      -       +      +
    503C  ASP*     2.8    18.3    +      -       -      +
    505C  MET*     1.3    71.7    -      -       +      +
    507C  HIS*     1.3    65.2    +      -       +      +
    509C  LYS*     3.3     7.1    +      -       -      +
    510C  GLN*     3.0    46.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 507 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    503C  ASP*     3.3    26.6    +      -       +      +
    504C  ILE*     2.7    16.7    +      -       +      +
    506C  VAL*     1.3    78.5    -      -       +      +
    508C  PHE*     1.3    64.9    +      -       -      +
    509C  LYS      3.0     2.0    -      -       -      -
    510C  GLN*     3.1    10.0    +      -       -      +
    511C  HIS*     2.9    26.9    +      -       -      +
    557C  PHE*     4.0    16.8    -      -       +      -
    561C  LYS*     4.0    14.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 508 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    504C  ILE      2.9     9.2    +      -       -      +
    505C  MET*     3.9    17.7    -      -       -      +
    507C  HIS*     1.3    75.9    -      -       -      +
    509C  LYS*     1.3    66.6    +      -       +      +
    511C  HIS*     3.8     1.9    -      +       -      +
    512C  MET*     2.8    66.1    +      -       +      +
    523C  LEU*     4.8    17.0    -      -       +      -
    550C  LEU*     4.8     3.1    -      -       -      -
    553C  VAL*     4.1     7.2    -      -       +      -
    554C  PHE*     3.7    54.3    -      +       +      -
    557C  PHE*     3.5    43.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with LYS 509 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505C  MET*     3.2    20.8    +      -       +      +
    506C  VAL*     3.5     9.9    -      -       -      +
    507C  HIS      3.0     0.6    -      -       -      -
    508C  PHE*     1.3    85.9    -      -       +      +
    510C  GLN*     1.3    61.8    +      -       +      +
    511C  HIS      3.1     1.3    -      -       -      -
    512C  MET*     3.7     7.9    -      -       +      +
    513C  GLN*     2.9    33.1    +      -       -      +
    522C  ASP*     4.2    20.8    +      -       -      +
    523C  LEU      5.2     9.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 510 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    506C  VAL*     3.0    33.5    +      -       +      +
    507C  HIS*     3.1    10.4    +      -       -      +
    509C  LYS*     1.3    76.1    -      -       +      +
    511C  HIS*     1.3    58.8    +      -       -      +
    513C  GLN*     3.2    19.7    -      -       -      +
    514C  ASN*     3.3    12.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 511 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507C  HIS      2.9    16.2    +      -       -      +
    508C  PHE*     3.8     7.0    -      +       -      +
    510C  GLN*     1.3    76.1    -      -       -      +
    512C  MET*     1.3    94.1    +      -       +      +
    513C  GLN      2.8     9.8    +      -       -      -
    514C  ASN*     3.2    31.6    +      -       -      +
    515C  GLN*     5.0     2.6    +      -       -      +
    553C  VAL*     5.6     1.4    -      -       -      +
    557C  PHE*     4.1    31.5    -      +       +      +
    561C  LYS*     5.7     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 512 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    508C  PHE*     2.8    50.7    +      -       +      +
    509C  LYS*     3.5    10.5    +      -       +      +
    511C  HIS*     1.3   101.9    -      -       +      +
    513C  GLN*     1.3    64.3    +      -       -      +
    515C  GLN*     3.1    51.0    -      -       -      +
    517C  ASP*     4.5    19.3    -      -       -      +
    553C  VAL*     3.9    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 513 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509C  LYS*     2.9    17.0    +      -       -      +
    510C  GLN*     3.2    19.4    -      -       -      +
    511C  HIS      2.8     1.2    -      -       -      -
    512C  MET*     1.3    79.3    -      -       -      +
    514C  ASN*     1.3    54.9    +      -       +      +
    515C  GLN      2.6    15.6    +      -       -      -
    516C  SER*     3.6     7.4    +      -       -      -
    517C  ASP*     4.5     4.4    +      -       -      +
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Residues in contact with ASN 514 (chain C). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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    510C  GLN      3.3    19.2    +      -       -      -
    511C  HIS*     3.2    20.4    +      -       -      +
    513C  GLN*     1.3    72.9    -      -       +      +
    515C  GLN*     1.3    57.8    +      -       -      +
    516C  SER*     3.7     1.6    -      -       -      +
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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