Contacts of the helix formed by residues 521 - 547 (chain D) in PDB entry 4DAJ


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 PRO 521 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    518D  SER      5.1     2.5    -      -       -      +
    519D  CYS      3.1    11.2    -      -       -      +
    520D  ILE*     1.3    85.6    -      -       -      +
    522D  LYS*     1.3    66.8    +      -       -      +
    523D  THR*     3.1    16.5    +      -       -      +
    524D  TYR*     3.3    36.3    +      -       +      -
    525D  TRP*     3.1    12.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 522 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    520D  ILE      3.9     0.4    +      -       -      -
    521D  PRO*     1.3    72.3    -      -       -      +
    523D  THR*     1.3    59.8    +      -       -      +
    525D  TRP*     3.1    15.4    +      -       -      +
    526D  ASN*     2.6    40.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 523 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    521D  PRO*     4.0    12.7    -      -       -      +
    522D  LYS*     1.3    75.5    +      -       -      +
    524D  TYR*     1.3    70.5    +      -       +      +
    526D  ASN*     3.5     7.1    +      -       -      +
    527D  LEU*     2.8    46.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 524 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509D  MET*     3.6    13.3    -      -       -      +
    520D  ILE*     3.9    17.0    -      -       +      -
    521D  PRO*     3.3    36.0    +      -       +      +
    523D  THR*     1.3    88.1    -      -       +      +
    525D  TRP*     1.3    67.8    +      -       -      +
    527D  LEU*     3.2    19.8    +      -       +      +
    528D  GLY      2.9    18.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 525 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231D  THR*     6.2     2.7    -      -       +      -
    506D  TYR*     4.0    27.6    -      +       +      -
    509D  MET*     3.5    24.6    -      -       +      +
    510D  VAL*     4.1    26.0    -      -       +      -
    513D  ASN*     3.3    46.5    -      -       +      +
    520D  ILE*     3.2    28.8    +      -       +      +
    521D  PRO      3.1    28.7    -      -       -      -
    522D  LYS*     3.1    12.3    +      -       -      +
    524D  TYR*     1.3    76.9    -      -       -      +
    526D  ASN*     1.3    66.8    +      -       -      +
    528D  GLY*     2.9    14.2    +      -       -      -
    529D  TYR*     2.9    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 526 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127D  TYR*     4.9    11.1    -      -       -      -
    128D  ILE*     4.4    31.6    -      -       +      +
    522D  LYS*     2.6    37.2    +      -       -      +
    523D  THR*     3.8     7.4    -      -       -      +
    525D  TRP*     1.3    80.5    -      -       -      +
    527D  LEU*     1.3    65.9    +      -       +      +
    529D  TYR*     2.9    14.5    +      -       -      +
    530D  TRP*     2.9    26.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 527 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523D  THR*     2.8    39.6    +      -       +      +
    524D  TYR*     3.3    26.7    -      -       +      +
    525D  TRP      3.1     0.2    -      -       -      -
    526D  ASN*     1.3    78.0    -      -       +      +
    528D  GLY*     1.3    64.1    +      -       -      +
    530D  TRP*     2.9    24.0    +      -       +      +
    531D  LEU*     2.9    20.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 528 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505D  PRO*     5.8     0.7    -      -       -      -
    506D  TYR*     3.6    20.8    -      -       -      +
    509D  MET*     4.2     5.6    -      -       -      -
    524D  TYR      2.9     9.4    +      -       -      -
    525D  TRP      2.9     9.0    +      -       -      -
    527D  LEU*     1.3    75.1    -      -       -      +
    529D  TYR*     1.3    61.9    +      -       -      +
    531D  LEU*     3.2    18.5    +      -       -      +
    532D  CYS*     2.9    26.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 529 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124D  PHE*     5.6     2.7    -      -       +      -
    143D  TRP*     4.8    10.4    -      +       -      -
    144D  LEU*     4.8     7.4    -      -       -      +
    147D  ASP*     4.0     6.6    +      -       -      -
    148D  TYR*     3.5    23.2    +      -       -      -
    506D  TYR*     3.6    28.5    -      +       -      -
    525D  TRP*     2.9     6.6    +      -       +      +
    526D  ASN*     2.9    22.1    +      -       -      +
    528D  GLY*     1.3    76.3    -      -       -      +
    530D  TRP*     1.3    55.1    +      -       +      +
    532D  CYS*     3.0    12.0    +      -       -      +
    533D  TYR*     3.0    63.5    +      +       +      -
   2000D  0HK      3.3    45.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 530 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74D  THR*     3.9    29.3    -      -       +      +
     77D  LEU*     4.0    15.3    -      -       +      -
    121D  MET*     3.1    50.0    -      -       +      -
    124D  PHE*     4.8     3.1    -      -       +      -
    125D  THR*     2.9    28.5    -      -       -      -
    128D  ILE*     3.7    25.6    -      -       +      +
    526D  ASN*     2.9    20.1    +      -       +      -
    527D  LEU*     2.9    15.2    +      -       +      +
    529D  TYR*     1.3    73.1    -      -       +      +
    531D  LEU*     1.3    61.8    +      -       +      +
    533D  TYR*     3.1    37.7    +      +       +      +
    534D  ILE*     2.9    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 531 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502D  THR*     3.3    22.3    -      -       +      +
    505D  PRO*     3.9    31.2    -      -       +      -
    527D  LEU*     2.9    18.5    +      -       +      +
    528D  GLY*     3.2    17.3    -      -       -      +
    530D  TRP*     1.3    77.3    -      -       +      +
    532D  CYS*     1.3    64.0    +      -       -      +
    533D  TYR      2.9     1.4    +      -       -      -
    534D  ILE*     2.9    41.3    +      -       +      +
    535D  ASN      3.0     5.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 532 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116D  ILE*     4.7     1.6    -      -       -      +
    502D  THR      3.5    12.6    -      -       -      -
    503D  TRP*     3.2    32.3    +      -       -      +
    506D  TYR*     3.7    25.8    -      -       -      -
    528D  GLY      2.9    28.2    +      -       -      -
    529D  TYR      3.0     3.1    +      -       -      +
    531D  LEU*     1.3    76.1    -      -       -      +
    533D  TYR*     1.3    61.1    +      -       -      +
    535D  ASN*     3.6     5.0    -      -       -      +
    536D  SER*     4.2     5.4    +      -       -      -
   2000D  0HK      3.1    49.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 533 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116D  ILE*     3.7    30.5    -      -       +      +
    120D  SER*     3.0    19.0    +      -       -      -
    121D  MET*     3.5    33.1    -      -       +      +
    124D  PHE*     4.1    10.8    -      -       +      -
    143D  TRP*     3.7     4.3    -      -       -      -
    147D  ASP*     2.7    25.1    +      -       -      -
    529D  TYR*     3.0    29.3    +      +       +      -
    530D  TRP*     3.3    43.3    -      +       +      +
    531D  LEU      2.9     1.2    +      -       -      -
    532D  CYS*     1.3    76.5    -      -       -      +
    534D  ILE*     1.3    56.3    +      -       -      +
    535D  ASN      2.9     4.9    -      -       -      -
    536D  SER*     2.8    24.8    +      -       -      -
    537D  THR*     3.0    10.4    +      -       -      -
   2000D  0HK      3.9    18.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 534 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77D  LEU*     3.6    30.7    -      -       +      -
    502D  THR*     4.1    15.3    -      -       +      -
    530D  TRP*     2.9    24.6    +      -       +      +
    531D  LEU*     2.9    44.3    +      -       +      +
    533D  TYR*     1.3    70.5    -      -       -      +
    535D  ASN*     1.3    57.4    +      -       -      +
    537D  THR*     3.2    14.2    -      -       +      +
    538D  VAL*     2.9    41.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 535 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154D  SER*     4.9     4.3    +      -       -      -
    498D  ALA*     3.8     8.3    -      -       -      +
    499D  PHE*     3.1    42.6    -      -       -      +
    502D  THR*     2.8    24.1    +      -       -      +
    503D  TRP*     3.6    27.3    +      -       -      +
    531D  LEU      3.0     5.4    +      -       -      +
    532D  CYS      3.6     3.4    -      -       -      +
    533D  TYR      2.9     0.6    -      -       -      -
    534D  ILE*     1.3    75.3    -      -       -      +
    536D  SER*     1.3    66.4    +      -       -      +
    537D  THR      2.9     3.8    -      -       -      -
    538D  VAL*     2.8    20.8    +      -       -      +
    539D  ASN*     3.0    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 536 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  THR*     3.7     9.7    -      -       -      +
     85D  ASN*     3.9     0.7    +      -       -      -
    112D  ALA      5.3     0.2    -      -       -      -
    113D  ASP*     2.8    51.8    +      -       -      +
    116D  ILE*     3.4    37.7    -      -       -      +
    154D  SER*     5.2     3.1    +      -       -      -
    503D  TRP*     5.7     2.3    -      -       -      -
    532D  CYS      4.4     2.3    +      -       -      -
    533D  TYR      2.8    12.4    +      -       -      -
    535D  ASN*     1.3    82.2    +      -       -      +
    537D  THR*     1.3    60.4    +      -       -      +
    539D  ASN      4.2     0.2    -      -       -      -
    540D  PRO*     3.8     5.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 537 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77D  LEU*     3.8    24.6    -      -       +      +
     80D  VAL*     4.5    13.8    -      -       +      +
     81D  THR*     2.6    36.1    +      -       -      +
    121D  MET*     4.0     4.0    -      -       -      +
    533D  TYR      3.0     6.0    +      -       -      -
    534D  ILE*     3.2    26.3    +      -       +      +
    535D  ASN      2.9     0.2    -      -       -      -
    536D  SER*     1.3    80.4    -      -       -      +
    538D  VAL*     1.3    64.4    +      -       +      +
    539D  ASN      3.5     0.7    +      -       -      -
    540D  PRO*     3.6     9.2    -      -       -      +
    541D  VAL*     3.7    12.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 538 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498D  ALA*     4.7    11.2    -      -       +      -
    502D  THR*     5.8     4.0    -      -       +      -
    534D  ILE*     2.9    30.4    +      -       +      +
    535D  ASN*     2.8     7.6    +      -       -      +
    537D  THR*     1.3    83.1    -      -       +      +
    539D  ASN*     1.3    66.3    +      -       -      +
    540D  PRO      3.5     0.2    -      -       -      -
    541D  VAL*     3.2    15.6    +      -       +      +
    542D  CYS*     2.9    36.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 539 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109D  LEU*     4.3    19.0    -      -       +      +
    113D  ASP*     2.7    29.3    +      -       -      +
    154D  SER*     5.0     4.0    +      -       -      -
    158D  LEU*     5.8     1.9    -      -       -      +
    495D  ILE*     3.2    33.9    -      -       +      +
    498D  ALA*     5.1     1.7    -      -       -      +
    535D  ASN*     3.0    34.7    +      -       -      +
    538D  VAL*     1.3    75.1    -      -       -      +
    540D  PRO*     1.3    69.7    -      -       +      +
    542D  CYS*     2.8    21.5    +      -       -      +
    543D  TYR*     2.9    24.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 540 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  THR      5.3     0.4    -      -       -      +
     84D  GLY*     4.3    11.4    -      -       -      -
     85D  ASN*     2.9    33.9    -      -       -      +
     88D  VAL*     3.4    25.8    -      -       +      -
    110D  ALA*     5.5     0.9    -      -       -      -
    113D  ASP*     4.0     0.2    -      -       -      +
    536D  SER      3.8     3.8    -      -       -      +
    537D  THR      3.6    13.9    -      -       -      +
    539D  ASN*     1.3    96.3    -      -       +      +
    541D  VAL*     1.3    57.3    +      -       +      +
    543D  TYR*     3.0    21.8    -      -       +      +
    544D  ALA*     3.0    25.5    +      -       -      +
    554D  PHE*     5.1     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 541 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80D  VAL*     5.8     6.7    -      -       +      -
    537D  THR*     3.7    21.5    -      -       +      +
    538D  VAL*     3.5    16.8    -      -       +      +
    539D  ASN      3.1     0.6    -      -       -      -
    540D  PRO*     1.3    77.0    -      -       +      +
    542D  CYS*     1.3    62.8    +      -       -      +
    544D  ALA*     3.1    11.9    +      -       +      +
    545D  LEU*     3.1    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 542 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491D  THR*     4.0     2.8    +      -       -      -
    494D  ALA*     4.2    25.9    -      -       +      +
    495D  ILE*     3.2    24.2    -      -       +      -
    498D  ALA*     4.4     8.5    -      -       -      -
    538D  VAL*     2.9    36.2    +      -       -      -
    539D  ASN      2.8    11.5    +      -       -      +
    541D  VAL*     1.3    75.3    -      -       -      +
    543D  TYR*     1.3    63.6    +      -       -      +
    545D  LEU*     3.0    17.4    +      -       -      +
    546D  CYS*     3.1    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 543 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88D  VAL*     4.1    23.3    -      -       +      -
    106D  LEU*     3.3    56.0    +      -       +      +
    109D  LEU*     3.2    34.3    -      -       -      +
    110D  ALA*     4.9     2.7    -      -       +      -
    491D  THR*     4.3     9.6    -      -       -      -
    495D  ILE*     3.5    25.8    -      -       +      -
    539D  ASN*     2.9    19.6    +      -       +      +
    540D  PRO*     3.0    26.0    -      -       +      +
    542D  CYS*     1.3    76.0    -      -       -      +
    544D  ALA*     1.3    60.3    +      -       -      +
    547D  ASN*     3.3    27.9    +      -       -      +
    550D  PHE*     4.0    27.2    -      +       +      +
    554D  PHE*     5.2     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 544 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    540D  PRO      3.0    11.6    +      -       -      +
    541D  VAL*     3.3    15.3    -      -       +      +
    542D  CYS      3.1     0.2    -      -       -      -
    543D  TYR*     1.3    78.9    -      -       -      +
    545D  LEU*     1.3    57.7    +      -       -      +
    546D  CYS      3.5     0.3    +      -       -      -
    547D  ASN      3.8     2.0    -      -       -      +
    550D  PHE*     4.7     4.9    -      -       -      -
    551D  ARG*     2.8    41.9    +      -       +      +
    554D  PHE*     4.8    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 545 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494D  ALA*     5.9     4.3    -      -       +      -
    541D  VAL*     3.1    10.7    +      -       +      +
    542D  CYS*     3.0    11.1    +      -       -      +
    544D  ALA*     1.3    77.4    -      -       -      +
    546D  CYS*     1.3    66.3    +      -       -      +
    551D  ARG*     3.0    24.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 546 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491D  THR*     3.2    51.8    -      -       -      +
    494D  ALA*     4.1    17.9    -      -       -      -
    542D  CYS      3.1     7.3    +      -       -      +
    543D  TYR      4.2     0.9    -      -       -      +
    545D  LEU*     1.3    87.6    -      -       -      +
    547D  ASN*     1.3    68.8    +      -       -      +
    548D  LYS*     3.5     2.8    +      -       -      +
    551D  ARG*     4.6     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 547 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103D  ASN*     4.0     8.9    +      -       -      +
    106D  LEU*     5.1     1.4    -      -       -      +
    490D  GLN*     5.2    14.1    +      -       -      +
    491D  THR*     4.8    15.7    -      -       -      +
    543D  TYR*     3.3     7.4    +      -       -      +
    546D  CYS*     1.3    82.7    -      -       -      +
    548D  LYS*     1.3    63.5    +      -       -      +
    549D  THR*     3.3    10.2    +      -       -      +
    550D  PHE*     3.3    43.1    +      -       +      +
    551D  ARG*     3.4    20.2    +      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il