Contacts of the helix formed by residues 29 - 56 (chain B) in PDB entry 5VBL


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 ALA 29 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  GLY*     1.3    72.1    -      -       -      -
     30B  LEU*     1.4    62.4    +      -       -      +
     32B  PRO*     3.6     5.5    -      -       -      +
     33B  ALA*     3.3    25.3    +      -       -      +
     90B  TYR*     3.9    22.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 30 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  GLY*     3.4     3.2    -      -       -      -
     29B  ALA*     1.4    74.2    -      -       -      +
     31B  ILE*     1.4    66.0    +      -       +      +
     33B  ALA*     3.4     6.3    +      -       -      +
     34B  ILE*     3.2    46.5    +      -       +      +
    293B  TYR*     4.0    30.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 31 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  SER*     3.8    20.0    -      -       -      -
     28B  GLY      4.6     1.7    +      -       -      +
     30B  LEU*     1.4    75.6    -      -       +      +
     32B  PRO*     1.4    68.0    -      -       +      +
     34B  ILE*     3.2    10.5    +      -       +      +
     35B  TYR*     3.1    55.4    +      -       +      +
     89B  THR*     4.1    17.0    -      -       +      -
    292B  PRO*     3.8    37.0    -      -       +      +
    293B  TYR*     3.8    35.4    -      -       +      -
    296B  CYS*     4.3     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 32 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  GLY      3.4    22.9    -      -       -      +
     29B  ALA      3.6     7.6    -      -       -      +
     31B  ILE*     1.4    92.7    -      -       +      +
     33B  ALA*     1.4    59.5    +      -       -      +
     35B  TYR*     3.5     5.2    +      -       +      +
     36B  MET*     3.3    27.7    +      -       -      +
     86B  ALA*     3.5    35.2    -      -       +      +
     89B  THR*     4.3     7.9    -      -       +      -
     90B  TYR*     3.9    28.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 33 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  ALA      3.3    19.4    +      -       -      +
     30B  LEU*     3.6     5.4    -      -       -      +
     31B  ILE      3.3     0.8    -      -       -      -
     32B  PRO*     1.4    75.2    -      -       -      +
     34B  ILE*     1.4    65.4    +      -       +      +
     36B  MET*     3.4     9.0    +      -       -      +
     37B  LEU*     3.2    30.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 34 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30B  LEU*     3.2    43.0    +      -       +      +
     31B  ILE*     3.2     5.3    +      -       +      +
     33B  ALA*     1.4    74.2    -      -       +      +
     35B  TYR*     1.4    53.9    +      -       +      +
     37B  LEU*     3.0    13.3    +      -       +      +
     38B  VAL*     2.8    41.2    +      -       +      +
    296B  CYS*     3.7    31.0    -      -       -      -
    300B  VAL*     3.8    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 35 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  200      4.3    13.5    -      -       +      -
     31B  ILE*     3.1    36.1    +      -       +      +
     32B  PRO      3.6     8.5    -      -       -      +
     34B  ILE*     1.4    78.6    -      -       +      +
     36B  MET*     1.3    56.4    +      -       -      +
     38B  VAL*     3.7     6.5    +      -       +      +
     39B  PHE*     3.2    25.6    +      -       -      +
     82B  LEU*     3.7    30.5    -      -       +      +
     85B  TRP*     4.3     3.1    -      -       +      -
     86B  ALA*     3.8    31.2    -      -       +      -
     89B  THR*     3.8    14.6    -      -       +      -
    292B  PRO      4.2     0.2    +      -       -      -
    295B  THR*     3.5    19.9    +      -       -      -
    296B  CYS*     3.7    27.8    -      -       +      -
    299B  TYR*     3.6    35.1    -      +       +      -
----------------------------------------------------------
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Residues in contact with MET 36 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32B  PRO      3.3    15.8    +      -       -      +
     33B  ALA*     3.7    10.1    -      -       -      +
     34B  ILE      3.2     0.4    -      -       -      -
     35B  TYR*     1.3    73.6    -      -       -      +
     37B  LEU*     1.4    59.6    +      -       -      +
     39B  PHE*     3.3    18.1    +      -       +      +
     40B  LEU*     3.0    27.8    +      -       -      +
     83B  PRO*     3.7    41.5    -      -       +      +
     86B  ALA*     4.2     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 37 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  ALA*     3.2    21.2    +      -       +      +
     34B  ILE*     3.0    14.0    +      -       +      +
     36B  MET*     1.4    73.2    -      -       -      +
     38B  VAL*     1.4    59.9    +      -       +      +
     40B  LEU*     3.4    11.3    +      -       +      +
     41B  LEU*     2.9    61.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 38 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  ILE*     2.8    28.7    +      -       +      +
     35B  TYR*     4.0     8.7    -      -       +      +
     36B  MET      3.4     0.2    -      -       -      -
     37B  LEU*     1.4    69.4    -      -       +      +
     39B  PHE*     1.4    54.6    +      -       -      +
     41B  LEU*     6.2     0.2    -      -       +      -
     42B  GLY*     2.8    30.8    +      -       -      -
     79B  VAL*     3.6     6.2    -      -       +      +
     82B  LEU*     3.8    16.6    -      -       +      -
    299B  TYR      3.4    24.9    -      -       -      +
    300B  VAL*     3.8    31.6    -      -       +      +
    303B  CYS*     3.7    30.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 39 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  TYR      3.2    15.2    +      -       -      +
     36B  MET*     3.4    21.3    -      -       +      +
     37B  LEU      3.3     0.2    -      -       -      -
     38B  VAL*     1.4    75.7    -      -       -      +
     40B  LEU*     1.3    61.8    +      -       +      +
     43B  THR*     2.7    58.6    +      -       +      -
     79B  VAL*     3.2    36.9    -      -       -      +
     80B  VAL*     4.0    17.0    -      -       +      -
     82B  LEU*     4.4     1.1    -      -       +      +
     83B  PRO*     3.7    29.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 40 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36B  MET      3.0    16.2    +      -       -      +
     37B  LEU*     3.4    12.1    +      -       +      +
     39B  PHE*     1.3    86.4    -      -       +      +
     41B  LEU*     1.3    70.5    +      -       +      +
     43B  THR*     3.3    12.4    +      -       -      +
     44B  THR*     2.8    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 41 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  LEU*     2.9    43.9    +      -       +      +
     40B  LEU*     1.3    86.0    -      -       +      +
     42B  GLY*     1.3    58.3    +      -       -      +
     44B  THR*     3.9     4.4    +      -       -      +
     45B  GLY*     3.0    27.1    +      -       -      -
    303B  CYS*     4.0    26.4    -      -       +      +
    306B  PRO*     5.2     0.5    -      -       -      +
    307B  PHE*     3.7    36.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 42 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38B  VAL      2.8    20.7    +      -       -      -
     39B  PHE      3.9     0.2    -      -       -      -
     41B  LEU*     1.3    76.5    -      -       -      +
     43B  THR*     1.4    58.7    +      -       -      +
     46B  ASN*     3.1    39.9    +      -       -      +
     76B  LEU*     3.9     2.9    -      -       -      +
     79B  VAL*     3.7    16.3    -      -       -      +
    303B  CYS*     3.7    11.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 43 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  PHE*     2.7    48.3    +      -       +      +
     40B  LEU*     3.3    10.9    +      -       -      +
     42B  GLY*     1.4    73.9    -      -       -      +
     44B  THR*     1.3    64.4    +      -       -      +
     47B  GLY*     3.2    24.4    +      -       -      -
     76B  LEU*     3.4    17.2    -      -       +      +
     79B  VAL*     3.6    13.9    -      -       +      +
     80B  VAL*     4.2    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 44 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40B  LEU*     2.8    27.2    +      -       +      +
     41B  LEU*     3.9     5.4    +      -       -      +
     43B  THR*     1.3    78.0    +      -       -      +
     45B  GLY*     1.3    60.6    +      -       -      +
     47B  GLY*     4.0     0.6    -      -       -      -
     48B  LEU*     3.1    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 45 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  LEU      3.0    22.5    +      -       -      -
     44B  THR*     1.3    75.0    +      -       -      +
     46B  ASN*     1.4    59.4    +      -       -      +
     48B  LEU*     3.2    22.1    +      -       -      +
     49B  VAL*     3.2    16.5    +      -       -      +
    306B  PRO*     3.5    21.0    -      -       -      +
    307B  PHE*     6.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 46 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  GLY*     3.1    30.7    +      -       -      +
     45B  GLY*     1.4    71.5    -      -       -      +
     47B  GLY*     1.3    58.8    +      -       -      +
     49B  VAL*     3.3    10.0    +      -       -      +
     50B  LEU*     3.0    32.9    +      -       -      +
     72B  ALA*     3.6    32.0    -      -       -      +
     75B  ASP*     3.5    26.3    -      -       -      +
     76B  LEU*     4.2     8.7    -      -       +      -
    302B  SER      3.0    26.2    +      -       -      +
    305B  ASN*     5.2     2.3    +      -       -      +
    306B  PRO*     4.0    14.3    -      -       -      +
    309B  TYR*     6.1     0.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 47 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  THR      3.2    21.0    +      -       -      -
     44B  THR*     4.0     1.3    -      -       -      -
     45B  GLY      3.2     0.2    -      -       -      -
     46B  ASN*     1.3    75.7    -      -       -      +
     48B  LEU*     1.4    57.2    +      -       -      +
     50B  LEU*     3.7     8.9    +      -       -      +
     51B  TRP*     3.1    28.1    +      -       -      +
     76B  LEU*     4.1     7.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 48 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44B  THR      3.1    18.7    +      -       -      +
     45B  GLY*     3.2     9.1    +      -       -      +
     47B  GLY*     1.4    74.4    -      -       -      +
     49B  VAL*     1.4    61.5    +      -       -      +
     51B  TRP*     3.5    14.6    -      -       +      +
     52B  THR*     3.3    30.4    +      -       +      +
    306B  PRO*     6.5     0.4    -      -       +      -
    316B  PHE*     4.0    10.0    -      -       +      -
    320B  CYS*     3.8    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 49 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  GLY      3.2    15.4    +      -       -      +
     46B  ASN*     3.3    11.8    +      -       -      +
     48B  LEU*     1.4    76.4    -      -       -      +
     50B  LEU*     1.4    61.2    +      -       -      +
     52B  THR*     2.7    21.3    +      -       -      -
     53B  VAL*     3.2    15.7    +      -       +      +
     68B  ILE*     3.9    28.9    -      -       +      +
     69B  ALA*     5.4     0.4    -      -       -      +
     72B  ALA*     3.9    16.6    -      -       +      -
    306B  PRO*     4.0    20.6    -      -       +      -
    309B  TYR*     4.1    16.2    -      -       +      -
    316B  PHE*     3.7    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 50 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  ASN      3.0    20.2    +      -       -      +
     47B  GLY*     3.9     7.4    -      -       -      +
     48B  LEU      3.5     0.2    -      -       -      -
     49B  VAL*     1.4    73.6    -      -       -      +
     51B  TRP*     1.3    62.7    +      -       -      +
     53B  VAL*     4.8     3.1    -      -       -      +
     54B  PHE*     3.3    57.1    +      -       +      +
     69B  ALA*     3.5    23.6    -      -       -      +
     72B  ALA*     3.8    14.4    -      -       +      -
     73B  VAL*     3.7    22.0    -      -       +      -
     76B  LEU*     4.1    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 51 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  GLY      3.1    18.9    +      -       -      +
     48B  LEU*     3.5    18.2    -      -       +      +
     49B  VAL      3.2     0.2    -      -       -      -
     50B  LEU*     1.3    77.1    -      -       -      +
     52B  THR*     1.4    63.3    +      -       +      +
     54B  PHE*     4.2     1.0    -      -       -      +
     55B  ARG*     2.9    52.5    +      -       +      +
    319B  ALA      5.9     0.9    -      -       -      -
    323B  MET*     3.5    52.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 52 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  LEU*     3.3    14.5    +      -       +      +
     49B  VAL      2.7    20.8    +      -       -      -
     51B  TRP*     1.4    83.9    -      -       +      +
     53B  VAL*     1.3    63.5    +      -       -      +
     55B  ARG*     3.4    20.5    -      -       -      +
     56B  SER*     3.7    12.3    +      -       -      -
    315B  ARG*     5.7     1.6    +      -       -      -
    316B  PHE*     3.6    18.0    -      -       +      -
    319B  ALA*     3.8    31.9    -      -       +      +
    320B  CYS*     3.8    25.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 53 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  VAL*     3.2    19.5    +      -       +      +
     50B  LEU      4.5     2.7    -      -       -      +
     52B  THR*     1.3    80.0    +      -       -      +
     54B  PHE*     1.3    62.7    +      -       +      +
     56B  SER*     3.0    26.0    +      -       -      +
     61B  ARG*     3.5    16.4    +      -       -      +
     65B  ASP*     3.8    44.0    -      -       +      +
     68B  ILE*     4.5    21.3    -      -       +      -
     69B  ALA*     4.1    16.8    -      -       +      -
    315B  ARG*     6.2     2.0    -      -       -      +
    316B  PHE*     6.4     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 54 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  LEU*     3.3    50.3    +      -       +      +
     51B  TRP*     4.2     1.3    -      -       -      +
     53B  VAL*     1.3    81.0    -      -       +      +
     55B  ARG*     1.4    63.1    +      -       -      +
     56B  SER      3.4     0.4    +      -       -      -
     57B  SER*     4.2     6.1    +      -       -      -
     61B  ARG*     3.5    30.6    +      -       -      +
     69B  ALA*     4.3    13.5    -      -       +      -
     73B  VAL*     5.9     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 55 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  TRP*     2.9    34.4    +      -       +      +
     52B  THR*     3.4    16.8    -      -       -      +
     54B  PHE*     1.4    76.3    -      -       -      +
     56B  SER*     1.3    66.9    +      -       -      +
     57B  SER*     3.3     8.7    +      -       -      -
    319B  ALA*     4.3    18.5    +      -       -      +
    322B  SER*     3.7    29.9    +      -       -      -
    323B  MET*     3.5    38.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  THR      3.8    13.5    -      -       -      -
     53B  VAL*     3.0    17.2    +      -       -      +
     54B  PHE      3.4     0.6    -      -       -      -
     55B  ARG*     1.3    82.4    -      -       -      +
     57B  SER*     1.3    59.0    +      -       -      +
     60B  LYS*     3.9    10.4    -      -       -      +
     61B  ARG*     3.2    16.8    +      -       -      +
    315B  ARG*     3.2    29.9    +      -       -      -
----------------------------------------------------------
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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