Contacts of the helix formed by residues 25 - 52 (chain D) in PDB entry 5YWB


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 GLY 25 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24D  ASN*     1.3    74.8    -      -       -      +
     26D  CYS*     1.3    62.6    +      -       -      +
     28D  VAL*     3.1     9.3    +      -       -      +
     29D  ASP*     2.9    22.1    +      -       -      +
    106D  LEU*     5.1     5.1    -      -       -      +
    153D  LYS*     4.6     2.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 26 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  TRP*     5.6     1.0    -      -       -      -
     95C  PHE*     4.2    18.8    -      -       +      -
     24D  ASN      3.4     0.2    -      -       -      -
     25D  GLY*     1.3    75.0    -      -       -      +
     27D  PHE*     1.3    56.5    +      -       -      +
     29D  ASP*     3.3     8.9    +      -       -      +
     30D  ALA*     2.9    29.8    +      -       -      +
    103D  HIS*     5.7     3.6    -      -       -      -
    105D  HIS*     5.1    13.0    -      -       +      +
    106D  LEU*     3.6    25.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 27 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  LEU*     4.1    17.0    -      -       +      +
     95C  PHE*     3.4    35.3    -      +       +      -
     96C  ALA*     3.6    31.4    -      -       +      -
     24D  ASN*     3.1    30.0    +      -       +      +
     26D  CYS*     1.3    79.8    -      -       -      +
     28D  VAL*     1.3    67.1    +      -       +      +
     30D  ALA*     3.3     5.0    +      -       -      +
     31D  LEU*     2.9    46.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 28 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24D  ASN*     3.2    19.1    -      -       +      +
     25D  GLY*     3.1     7.9    +      -       -      +
     27D  PHE*     1.3    81.8    -      -       +      +
     29D  ASP*     1.3    66.1    +      -       -      +
     31D  LEU*     3.3     8.9    +      -       +      +
     32D  ASN*     2.9    31.5    +      -       -      +
    149D  THR*     4.8     0.4    -      -       -      +
    152D  ILE*     3.6    28.3    -      -       +      -
    153D  LYS*     3.5    35.4    -      -       +      +
    156D  LYS*     5.0    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 29 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25D  GLY      2.9    13.1    +      -       -      +
     26D  CYS*     3.3    12.5    +      -       -      +
     28D  VAL*     1.3    75.9    -      -       -      +
     30D  ALA*     1.3    57.2    +      -       -      +
     32D  ASN*     3.1     5.2    +      -       -      +
     33D  VAL*     2.9    32.0    +      -       -      +
    105D  HIS*     3.2    26.5    -      -       +      +
    106D  LEU*     4.8     8.3    -      -       +      +
    109D  PRO*     3.7    10.8    -      -       +      +
    153D  LYS*     3.5    13.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 30 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88C  MET*     5.4     2.9    -      -       +      +
     91C  TRP*     3.6    34.3    -      -       +      -
     92C  LEU*     4.7    11.4    -      -       +      -
     95C  PHE*     5.6     2.2    -      -       +      -
     26D  CYS      2.9    15.6    +      -       -      +
     27D  PHE*     3.7     6.3    -      -       -      +
     29D  ASP*     1.3    76.9    -      -       -      +
     31D  LEU*     1.3    63.4    +      -       -      +
     33D  VAL*     2.9    20.5    +      -       -      +
     34D  VAL*     3.0    19.0    +      -       +      +
    105D  HIS*     6.2     1.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 31 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  LEU*     4.9    19.4    -      -       +      +
     27D  PHE*     2.9    38.9    +      -       +      +
     28D  VAL*     3.6     8.5    -      -       +      +
     30D  ALA*     1.3    76.8    -      -       -      +
     32D  ASN*     1.3    60.6    +      -       -      +
     34D  VAL*     3.7     8.7    +      -       +      +
     35D  PRO*     3.2    17.9    -      -       +      +
    149D  THR*     3.4    21.3    -      -       +      +
    152D  ILE*     4.9    21.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 32 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28D  VAL*     2.9    20.0    +      -       -      +
     29D  ASP      3.5     8.3    -      -       -      +
     30D  ALA      3.1     0.2    -      -       -      -
     31D  LEU*     1.3    76.3    -      -       -      +
     33D  VAL*     1.3    65.6    +      -       -      +
     34D  VAL      3.1     0.2    -      -       -      -
     35D  PRO*     3.1    12.1    -      -       -      +
     36D  HIS*     3.1    23.3    +      -       -      +
    109D  PRO*     4.4    10.9    -      -       +      +
    149D  THR*     3.4    33.9    +      -       -      +
    150D  LYS*     3.4    42.2    -      -       -      +
    153D  LYS*     3.4    23.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 33 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88C  MET*     4.2    21.8    -      -       +      -
     29D  ASP      2.9    19.4    +      -       -      +
     30D  ALA*     2.9    12.6    +      -       -      +
     32D  ASN*     1.3    77.7    -      -       -      +
     34D  VAL*     1.3    66.2    +      -       -      +
     35D  PRO      3.5     0.3    -      -       -      -
     36D  HIS*     3.5    11.3    +      -       -      +
     37D  VAL*     3.3    20.6    +      -       +      +
    105D  HIS*     5.5     1.3    -      -       -      +
    108D  MET*     4.1    13.9    -      -       +      -
    109D  PRO*     3.8    29.8    -      -       +      -
    112D  MET*     4.1    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 34 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88C  MET*     4.2    26.5    -      -       +      -
     89C  VAL*     6.1     4.0    -      -       +      -
     92C  LEU*     4.0    29.2    -      -       +      -
     30D  ALA*     3.0    16.3    +      -       +      +
     31D  LEU*     3.8     9.9    -      -       +      +
     33D  VAL*     1.3    76.3    -      -       -      +
     35D  PRO*     1.3    73.5    -      -       +      +
     37D  VAL*     3.0    20.0    +      -       +      +
     38D  PHE*     3.0    13.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 35 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31D  LEU*     3.2    14.6    -      -       +      +
     32D  ASN*     3.1    24.7    -      -       -      +
     34D  VAL*     1.3    83.1    -      -       +      +
     36D  HIS*     1.3    64.5    +      -       +      +
     38D  PHE*     3.1    10.5    +      -       +      +
     39D  LEU      3.0    19.1    +      -       -      -
    142D  TYR*     3.5    23.4    -      -       +      -
    145D  LEU*     4.2    31.0    -      -       +      +
    146D  ALA*     4.6     6.1    -      -       +      +
    149D  THR*     4.1    17.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 36 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32D  ASN*     3.1    35.7    +      -       -      -
     33D  VAL*     3.8     3.6    -      -       -      +
     34D  VAL      3.3     0.6    -      -       -      -
     35D  PRO*     1.3    76.5    -      -       +      +
     37D  VAL*     1.3    58.3    +      -       -      +
     39D  LEU*     3.3     2.3    +      -       -      +
     40D  LEU*     2.9    35.9    +      -       +      +
    109D  PRO*     3.9     8.6    +      -       -      +
    112D  MET*     3.6    31.9    -      -       +      +
    113D  ALA*     3.4    39.9    -      -       +      +
    116D  ALA*     3.6     3.7    -      -       +      +
    142D  TYR*     2.8    37.2    +      +       -      -
    146D  ALA*     5.0     5.8    -      -       +      -
    150D  LYS*     5.6     4.3    +      -       -      -
    179D  TYR*     3.5    10.8    -      +       -      -
----------------------------------------------------------
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Residues in contact with VAL 37 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85C  LEU*     4.9     7.0    -      -       +      -
     88C  MET*     4.4    29.6    -      -       +      -
     33D  VAL*     3.3    12.2    +      -       +      +
     34D  VAL*     3.0    13.1    +      -       +      +
     36D  HIS*     1.3    76.8    -      -       -      +
     38D  PHE*     1.3    67.7    +      -       +      +
     40D  LEU*     3.4     4.8    +      -       -      -
     41D  PHE*     2.9    64.0    +      -       +      -
    112D  MET*     3.9    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 38 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85C  LEU*     4.5    24.7    -      -       +      -
     34D  VAL*     3.0    14.5    +      -       +      +
     35D  PRO*     3.4    14.8    -      -       +      +
     37D  VAL*     1.3    79.1    -      -       +      +
     39D  LEU*     1.3    63.4    +      -       +      +
     41D  PHE*     3.2     6.4    +      -       -      +
     42D  ILE*     3.0    59.9    +      -       +      +
    138D  ALA      5.7     3.4    -      -       -      -
    141D  ILE*     5.2    15.0    -      -       +      -
    142D  TYR*     5.4     8.1    -      -       +      -
    145D  LEU*     5.3    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 39 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35D  PRO      3.0    14.5    +      -       -      +
     36D  HIS      3.9     3.4    -      -       -      +
     38D  PHE*     1.3    78.1    -      -       +      +
     40D  LEU*     1.3    60.7    +      -       -      +
     41D  PHE      3.0     1.6    -      -       -      -
     42D  ILE*     3.3     6.8    +      -       +      +
     43D  THR*     2.9    29.1    +      -       -      -
    116D  ALA*     3.9    21.1    -      -       +      +
    119D  THR*     3.9    11.9    -      -       +      -
    120D  SER*     4.7     1.6    -      -       -      +
    123D  TYR*     4.5    15.0    -      -       +      -
    138D  ALA*     4.3    13.7    -      -       +      +
    139D  LEU*     4.3    18.4    -      -       +      -
    142D  TYR*     3.5    50.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 40 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36D  HIS      2.9    17.6    +      -       -      +
     37D  VAL*     3.9     4.0    -      -       -      +
     39D  LEU*     1.3    76.9    -      -       -      +
     41D  PHE*     1.3    67.4    +      -       +      +
     43D  THR*     3.1     6.5    -      -       +      +
     44D  PHE*     2.9    40.0    -      -       +      -
    112D  MET*     3.7    29.2    -      -       +      +
    115D  MET*     3.3    57.4    -      -       +      +
    116D  ALA*     4.0     3.8    -      -       -      +
    119D  THR*     3.6    19.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 41 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81C  CYS*     3.6    44.4    -      -       +      -
     84C  LEU*     3.7    29.4    -      -       +      -
     85C  LEU*     3.4    42.4    -      -       +      -
     88C  MET*     5.8     0.2    -      -       +      -
     37D  VAL*     2.9    48.5    +      -       +      +
     38D  PHE      3.7     4.0    -      -       -      +
     39D  LEU      3.0     0.2    -      -       -      -
     40D  LEU*     1.3    89.1    -      -       +      +
     42D  ILE*     1.3    64.1    +      -       +      +
     43D  THR      3.2     0.2    -      -       -      -
     44D  PHE*     3.6     7.7    +      +       -      +
     45D  PRO*     3.3    17.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 42 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81C  CYS*     5.7     0.2    -      -       -      -
     85C  LEU*     5.7     3.8    -      -       +      -
     38D  PHE*     3.0    50.0    +      -       +      +
     39D  LEU*     3.3     8.7    +      -       +      +
     41D  PHE*     1.3    77.2    -      -       +      +
     43D  THR*     1.3    65.0    +      -       -      +
     44D  PHE      3.3     0.7    +      -       -      -
     45D  PRO*     3.4    12.1    -      -       -      +
     46D  ILE*     4.2    12.5    +      -       +      +
    123D  TYR*     3.4    18.7    +      -       +      +
    138D  ALA*     5.3     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 43 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39D  LEU      2.9    14.5    +      -       -      +
     40D  LEU*     3.1    25.1    -      -       +      +
     42D  ILE*     1.3    78.2    -      -       -      +
     44D  PHE*     1.3    67.5    +      -       +      +
     45D  PRO      3.5     0.2    -      -       -      -
     46D  ILE*     3.6     2.1    +      -       -      +
     47D  LEU*     2.8    34.7    +      -       +      +
    119D  THR*     3.2    31.3    +      -       +      +
    122D  VAL*     5.1     4.7    -      -       -      +
    123D  TYR*     3.3    35.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 44 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77C  MET*     4.1    25.1    -      -       +      -
     81C  CYS*     5.8     2.0    -      -       +      -
     40D  LEU*     2.9    37.0    -      -       +      +
     41D  PHE*     3.6     8.2    +      +       -      +
     42D  ILE      3.2     0.2    -      -       -      -
     43D  THR*     1.3    86.5    -      -       +      +
     45D  PRO*     1.3    68.6    -      -       +      +
     47D  LEU*     4.0     5.6    -      -       +      +
     48D  PHE*     2.9    74.0    +      +       -      -
    115D  MET*     6.3     3.6    -      -       +      -
    119D  THR*     5.6     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 45 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74C  ILE*     4.2    11.6    -      -       +      +
     77C  MET*     5.4     3.1    -      -       +      -
     78C  SER*     4.4    20.0    -      -       -      +
     81C  CYS*     5.3     9.0    -      -       +      -
     41D  PHE      3.3    18.4    -      -       -      +
     42D  ILE*     3.4    10.3    -      -       -      +
     44D  PHE*     1.3    91.7    -      -       +      +
     46D  ILE*     1.3    59.4    +      -       +      +
     48D  PHE*     3.1     5.9    +      -       +      +
     49D  ILE*     2.9    38.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 46 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42D  ILE*     4.3    10.5    -      -       +      +
     43D  THR      3.6     5.5    +      -       -      +
     44D  PHE      3.4     0.2    -      -       -      -
     45D  PRO*     1.3    79.0    -      -       +      +
     47D  LEU*     1.3    58.7    +      -       -      +
     49D  ILE*     3.3    10.3    +      -       +      +
     50D  GLY*     2.9    27.2    +      -       -      -
    123D  TYR*     3.3    29.6    -      -       +      +
    126D  ASN*     4.4    12.6    +      -       +      +
    135D  LEU*     3.7    35.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 47 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43D  THR*     2.8    29.2    +      -       +      +
     44D  PHE*     4.0     8.3    -      -       +      +
     46D  ILE*     1.3    77.6    -      -       -      +
     48D  PHE*     1.3    61.1    +      -       +      +
     50D  GLY      3.8     0.2    -      -       -      -
     51D  TRP*     2.9    31.4    +      -       -      +
    122D  VAL*     4.6    18.2    -      -       +      -
    126D  ASN*     4.2    12.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 48 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     4.8     3.6    -      -       -      +
     73C  LEU*     4.8    22.9    -      -       +      -
     74C  ILE*     4.4    20.6    -      -       +      +
     77C  MET*     3.4    39.0    -      -       +      -
     44D  PHE*     2.9    57.0    +      +       -      +
     45D  PRO*     3.7     3.1    -      -       +      +
     47D  LEU*     1.3    79.3    -      -       +      +
     49D  ILE*     1.3    60.5    +      -       -      +
     51D  TRP*     3.8    19.6    -      +       +      +
     52D  GLY*     3.0    24.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 49 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  VAL*     4.6    34.8    -      -       +      +
     62C  THR*     5.1    16.7    -      -       +      +
     63C  LEU*     4.9    12.8    -      -       +      +
     66C  LEU*     4.9    12.7    -      -       +      +
     74C  ILE*     3.6    21.1    -      -       +      -
     45D  PRO*     2.9    26.1    +      -       +      +
     46D  ILE*     3.8     8.5    -      -       +      +
     48D  PHE*     1.3    77.1    -      -       -      +
     50D  GLY*     1.3    63.3    +      -       -      +
     52D  GLY*     3.4    15.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 50 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46D  ILE      2.9    15.4    +      -       -      -
     47D  LEU*     3.8     1.8    -      -       -      -
     49D  ILE*     1.3    79.5    -      -       -      +
     51D  TRP*     1.3    59.1    +      -       -      +
     52D  GLY      4.8     1.0    -      -       -      -
    126D  ASN*     5.2    10.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 51 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70C  HIS*     4.0    32.8    -      +       -      -
     73C  LEU*     5.3     9.6    -      -       +      -
     47D  LEU      2.9    19.3    +      -       -      +
     48D  PHE*     4.2    19.5    -      +       +      +
     50D  GLY*     1.3    76.3    -      -       -      +
     52D  GLY*     1.3    70.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 52 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     3.9    32.4    -      -       -      +
     67C  LYS*     5.8     0.7    +      -       -      -
     70C  HIS*     4.6    17.1    +      -       -      -
     48D  PHE      3.0    18.5    +      -       -      -
     49D  ILE      3.4     9.7    +      -       -      -
     50D  GLY      4.8     1.1    -      -       -      -
     51D  TRP*     1.3    89.6    -      -       -      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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