Contacts of the helix formed by residues 293 - 317 (chain D) in PDB entry 2GPV


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 SER 293 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291D  THR      4.0     0.2    +      -       -      -
    292D  LEU*     1.3    77.3    -      -       -      +
    294D  LEU*     1.3    63.8    +      -       -      +
    295D  ALA*     3.6     2.3    +      -       -      -
    296D  ASP*     2.9    30.5    +      -       -      +
    297D  GLN*     2.8    21.9    +      -       -      +
    383D  GLU*     3.3    24.2    +      -       -      +
    384D  ASP*     6.1     2.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 294 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256B  THR      5.9     2.2    -      -       -      +
    258B  PRO*     4.2    19.3    -      -       +      -
    451B  LEU*     5.8     4.3    -      -       +      -
    454B  LEU*     4.0    32.3    -      -       +      +
    455B  GLU*     3.7    30.7    -      -       +      +
    292D  LEU      3.7     1.0    +      -       -      -
    293D  SER*     1.3    71.4    -      -       -      +
    295D  ALA*     1.3    56.2    +      -       -      +
    297D  GLN*     3.3    21.9    +      -       -      +
    298D  MET*     2.8    39.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 295 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  PRO*     3.9    24.1    -      -       +      +
    259B  ASP      4.2     8.7    -      -       -      +
    260B  SER*     5.9     4.5    -      -       -      -
    293D  SER*     3.1     1.4    +      -       -      +
    294D  LEU*     1.3    78.3    -      -       -      +
    296D  ASP*     1.3    58.5    +      -       -      +
    298D  MET*     3.6     6.8    -      -       -      +
    299D  SER*     2.8    30.0    +      -       -      -
    381D  HIS      5.7     0.7    -      -       -      +
    383D  GLU*     3.0    41.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 296 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292D  LEU*     4.3    13.5    -      -       +      +
    293D  SER*     2.9    24.6    +      -       -      +
    295D  ALA*     1.3    72.7    -      -       -      +
    297D  GLN*     1.3    67.7    +      -       -      +
    298D  MET      3.0     1.6    -      -       -      -
    299D  SER*     3.1     4.5    +      -       -      -
    300D  LEU*     2.9    30.8    +      -       -      +
    381D  HIS      4.3     1.2    -      -       -      +
    382D  ILE*     3.4    16.6    -      -       +      +
    383D  GLU*     2.6    31.8    +      -       -      +
    384D  ASP*     2.9    33.0    +      -       -      +
    388D  VAL*     4.2    10.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 297 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  LEU*     3.7    31.1    -      -       +      +
    284D  LYS*     5.1     2.9    -      -       -      +
    289D  PHE*     3.5    50.4    +      -       +      +
    290D  SER*     3.5    23.4    +      -       -      +
    292D  LEU*     2.9    24.4    +      -       +      +
    293D  SER      2.8    17.9    +      -       -      +
    294D  LEU*     3.7    25.7    -      -       -      +
    296D  ASP*     1.3    71.9    -      -       -      +
    298D  MET*     1.3    56.6    +      -       -      +
    300D  LEU*     4.0     1.5    -      -       -      +
    301D  LEU*     3.2    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 298 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  PRO*     4.9     5.2    -      -       +      -
    260B  SER*     4.9     3.8    -      -       -      +
    447B  HIS*     3.0    49.1    -      -       +      +
    450B  PHE*     3.7    28.3    -      -       +      -
    451B  LEU*     3.8    25.4    -      -       +      -
    454B  LEU*     3.8    12.1    -      -       +      -
    294D  LEU*     2.8    29.5    +      -       +      +
    295D  ALA*     3.6     7.6    -      -       -      +
    297D  GLN*     1.3    74.5    -      -       -      +
    299D  SER*     1.3    54.8    +      -       -      +
    301D  LEU*     2.9     5.4    +      -       -      +
    302D  GLN*     2.4    50.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 299 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  SER*     6.1     0.7    -      -       -      -
    295D  ALA      2.8    20.2    +      -       -      -
    296D  ASP*     3.1     5.4    +      -       -      -
    298D  MET*     1.3    76.3    -      -       -      +
    300D  LEU*     1.3    63.5    +      -       -      +
    302D  GLN*     3.2    11.8    +      -       -      +
    303D  SER*     2.9    28.1    +      -       -      -
    379D  SER*     3.6    21.2    +      -       -      -
    381D  HIS*     3.6    14.7    +      -       -      +
    382D  ILE*     3.9    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 300 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289D  PHE*     3.9    16.4    -      -       +      -
    292D  LEU*     3.4    33.0    -      -       +      -
    296D  ASP      2.9    15.9    +      -       -      +
    297D  GLN      4.0     3.1    -      -       -      +
    299D  SER*     1.3    75.5    -      -       -      +
    301D  LEU*     1.3    59.0    +      -       -      +
    303D  SER*     3.3     0.4    +      -       -      -
    304D  ALA*     2.9    31.5    +      -       -      +
    374D  LEU*     3.1    31.0    -      -       +      +
    375D  ALA*     3.8    15.7    -      -       -      +
    377D  SER*     3.4    14.4    +      -       -      +
    378D  ASP      5.6     1.1    -      -       -      +
    379D  SER*     5.2     2.2    -      -       -      +
    382D  ILE*     4.8    11.4    -      -       +      -
    388D  VAL*     4.3    17.9    -      -       +      -
    391D  LEU*     4.6     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 301 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450B  PHE*     3.7    33.2    -      -       +      -
    454B  LEU*     3.9    28.3    -      -       +      -
    279D  ILE*     4.5    12.1    -      -       +      -
    280D  ILE*     4.0    12.3    -      -       +      -
    283D  ALA*     4.3    14.1    -      -       +      -
    289D  PHE*     4.2     8.5    -      -       +      -
    297D  GLN      3.2    15.6    +      -       -      +
    298D  MET*     2.9     4.7    +      -       -      +
    300D  LEU*     1.3    77.8    -      -       -      +
    302D  GLN*     1.3    65.6    +      -       -      +
    303D  SER      3.1     0.7    +      -       -      -
    304D  ALA      4.3     0.4    -      -       -      +
    305D  TRP*     3.2    32.1    +      -       +      +
    308D  ILE*     4.5    12.8    -      -       +      -
    374D  LEU*     3.8    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 302 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  SER*     5.5     2.2    -      -       -      -
    261B  ASP*     3.7    24.8    +      -       -      +
    262B  ILE*     4.0     6.4    -      -       -      +
    443B  LYS*     3.8    22.9    -      -       +      +
    446B  MET*     5.2     1.7    -      -       +      +
    447B  HIS*     3.7    31.2    +      -       -      +
    450B  PHE*     4.8    21.1    -      -       +      -
    298D  MET*     2.4    38.1    +      -       +      +
    299D  SER*     3.8    12.8    +      -       -      +
    301D  LEU*     1.3    68.1    -      -       -      +
    303D  SER*     1.3    57.7    +      -       -      +
    305D  TRP*     3.2    23.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 303 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299D  SER      2.9    13.4    +      -       -      -
    300D  LEU      3.6     0.2    -      -       -      -
    302D  GLN*     1.3    80.0    -      -       -      +
    304D  ALA*     1.3    61.9    +      -       -      +
    305D  TRP*     3.5     3.6    +      -       -      -
    306D  MET*     4.9     1.6    +      -       -      +
    307D  GLU*     4.8     5.2    -      -       -      +
    377D  SER*     3.6    31.8    +      -       -      -
    379D  SER*     3.4    26.4    +      -       -      -
    428D  SER*     5.3     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 304 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300D  LEU      2.9    20.3    +      -       -      +
    301D  LEU      3.3     0.2    +      -       -      -
    303D  SER*     1.3    72.4    -      -       -      +
    305D  TRP*     1.3    66.8    +      -       -      +
    306D  MET      3.3     2.0    -      -       -      -
    307D  GLU*     2.7    30.9    +      -       +      +
    308D  ILE*     3.2    10.2    +      -       +      -
    373D  ALA      4.3     2.0    -      -       -      +
    374D  LEU*     3.5    37.9    -      -       +      +
    377D  SER*     3.8    11.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 305 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    446B  MET*     3.3    34.7    -      -       +      -
    450B  PHE*     4.6    12.3    -      +       +      -
    276D  LEU*     3.7    30.5    -      -       +      -
    279D  ILE*     4.7     2.3    -      -       +      +
    301D  LEU*     3.2    17.8    +      -       +      +
    302D  GLN*     3.2    30.0    +      -       -      +
    303D  SER      4.5     2.6    +      -       -      -
    304D  ALA*     1.3    75.4    -      -       -      +
    306D  MET*     1.3   107.3    +      -       +      +
    308D  ILE*     3.1    14.8    +      -       -      +
    309D  LEU*     3.0    35.2    +      -       +      +
    432D  VAL*     4.6    12.8    -      -       +      +
    435D  PHE*     5.4     4.9    -      +       -      -
    436D  TYR*     4.5    10.1    -      +       -      -
    503D  OHT      3.8    27.6    -      +       -      -
----------------------------------------------------------
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Residues in contact with MET 306 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303D  SER      4.9     1.3    +      -       -      +
    304D  ALA      3.0     0.8    +      -       -      -
    305D  TRP*     1.3   116.1    -      -       +      +
    307D  GLU*     1.3    57.4    +      -       -      +
    309D  LEU*     3.2     8.6    +      -       -      +
    310D  ILE*     2.9    45.1    +      -       +      +
    428D  SER*     3.6    28.7    -      -       -      +
    431D  ALA*     3.8    14.1    -      -       +      +
    432D  VAL*     3.9    31.9    -      -       +      +
    435D  PHE*     5.2     2.5    -      -       +      -
    503D  OHT      3.7    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 307 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  PRO*     6.0     0.3    -      -       -      +
    303D  SER      4.8     7.4    -      -       -      +
    304D  ALA*     2.7    23.2    +      -       -      +
    306D  MET*     1.3    74.1    -      -       -      +
    308D  ILE*     1.3    54.6    +      -       +      +
    310D  ILE      3.5     0.2    +      -       -      -
    311D  LEU*     3.0    31.2    +      -       -      +
    373D  ALA*     4.1    23.2    -      -       +      +
    377D  SER*     5.0     5.2    -      -       -      +
    421D  LEU*     4.5     5.0    -      -       -      +
    424D  LEU*     3.5    34.5    -      -       +      +
    425D  ARG*     2.9    46.4    +      -       -      +
    428D  SER*     3.3    25.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 308 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279D  ILE*     3.6    36.6    -      -       +      +
    282D  TRP*     3.7    26.2    -      -       +      -
    301D  LEU*     4.5     5.2    -      -       +      -
    304D  ALA*     3.8    28.3    -      -       +      +
    305D  TRP*     3.1     7.5    +      -       -      +
    307D  GLU*     1.3    75.2    -      -       +      +
    309D  LEU*     1.3    65.7    +      -       -      +
    311D  LEU*     4.1     4.9    -      -       -      +
    312D  GLY*     3.2    17.8    +      -       -      -
    370D  LYS*     3.9    35.6    -      -       +      +
    373D  ALA*     5.4     1.8    -      -       +      -
    374D  LEU*     4.2    15.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 309 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272D  ALA*     4.1    15.7    -      -       +      +
    275D  GLU*     3.8    39.3    -      -       +      +
    276D  LEU*     4.8     4.0    -      -       +      +
    279D  ILE*     3.8    15.3    -      -       +      -
    305D  TRP*     3.0    43.1    +      -       +      +
    306D  MET*     3.4     9.6    -      -       -      +
    308D  ILE*     1.3    77.6    -      -       -      +
    310D  ILE*     1.3    57.7    +      -       -      +
    312D  GLY*     3.1     4.4    +      -       -      -
    313D  VAL      3.0    24.3    +      -       -      -
    316D  ARG*     4.9     0.2    +      -       -      -
    503D  OHT      3.8    50.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 310 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306D  MET*     2.9    43.1    +      -       +      +
    307D  GLU      4.0     2.9    -      -       -      +
    309D  LEU*     1.3    72.2    -      -       -      +
    311D  LEU*     1.3    61.4    +      -       -      +
    313D  VAL*     3.1     8.7    -      -       -      +
    314D  VAL*     2.9    43.1    +      -       +      +
    349D  ILE*     4.2    24.0    -      -       +      -
    352D  LEU*     4.6     3.4    -      -       +      -
    424D  LEU*     3.9    15.9    -      -       +      -
    427D  THR*     4.0    15.7    -      -       +      +
    428D  SER*     3.7    19.7    -      -       -      +
    431D  ALA*     3.9    14.1    -      -       +      -
    503D  OHT      4.7    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 311 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307D  GLU      3.0    16.0    +      -       -      +
    308D  ILE*     4.1     3.8    -      -       -      +
    310D  ILE*     1.3    72.8    -      -       -      +
    312D  GLY*     1.3    59.4    +      -       -      +
    314D  VAL*     3.2     9.6    +      -       +      +
    315D  TYR*     2.8    27.2    +      -       -      +
    352D  LEU*     5.5     0.4    -      -       +      -
    356D  TYR*     3.7    35.2    -      -       +      +
    361D  LEU*     5.9     1.6    -      -       +      -
    366D  PHE*     3.3    22.4    -      -       +      +
    369D  LEU*     4.1    13.5    -      -       +      +
    370D  LYS*     3.6    39.9    -      -       +      +
    373D  ALA*     5.3     1.8    -      -       +      -
    421D  LEU*     5.8     0.7    -      -       +      -
    424D  LEU*     3.6    27.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 312 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275D  GLU*     5.7     1.1    -      -       -      -
    308D  ILE      3.2    10.1    +      -       -      -
    309D  LEU*     3.1     9.9    +      -       -      -
    311D  LEU*     1.3    80.5    -      -       -      +
    313D  VAL*     1.3    61.2    +      -       -      +
    315D  TYR*     3.2     9.2    +      -       -      +
    316D  ARG*     3.1    33.5    +      -       -      +
    366D  PHE*     3.9    15.4    -      -       -      -
    370D  LYS*     5.2     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 313 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309D  LEU      3.0    12.1    +      -       -      +
    310D  ILE*     3.1    31.0    -      -       -      +
    312D  GLY*     1.3    71.3    -      -       -      +
    314D  VAL*     1.3    59.6    +      -       -      +
    316D  ARG*     3.1    18.9    +      -       -      +
    317D  SER*     2.6    41.4    +      -       -      +
    324D  LEU*     4.2     9.9    -      -       +      -
    325D  VAL      3.7    17.5    -      -       -      +
    326D  TYR*     3.6    40.4    -      -       +      +
    349D  ILE*     4.0    17.5    -      -       +      -
    503D  OHT      4.4     2.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 314 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310D  ILE*     2.9    39.9    +      -       +      +
    311D  LEU*     3.4    10.5    -      -       +      +
    313D  VAL*     1.3    72.9    -      -       -      +
    315D  TYR*     1.3    65.9    +      -       -      +
    317D  SER*     3.1    10.6    +      -       -      -
    318D  LEU*     3.5    12.2    +      -       +      +
    349D  ILE*     4.1    16.8    -      -       +      +
    352D  LEU*     3.9    22.0    -      -       +      -
    353D  VAL*     3.6    30.1    -      -       +      +
    356D  TYR*     3.5    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 315 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311D  LEU      2.8     9.9    +      -       -      -
    312D  GLY      3.6     3.4    -      -       -      +
    314D  VAL*     1.3    75.1    -      -       -      +
    316D  ARG*     1.3    70.5    +      -       +      +
    317D  SER      2.9     1.6    +      -       -      -
    318D  LEU*     3.1    48.4    +      -       +      +
    361D  LEU*     4.0     9.9    +      -       +      -
    362D  GLU*     3.9     5.7    -      -       -      -
    363D  LYS*     3.2    49.9    +      -       +      +
    366D  PHE*     3.4    63.3    -      +       +      -
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Residues in contact with ARG 316 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248D  LYS*     6.5     0.9    -      -       -      -
    249D  ILE      5.9     0.2    +      -       -      -
    275D  GLU*     3.9    15.3    +      -       -      -
    312D  GLY*     3.1    33.0    +      -       -      +
    313D  VAL*     3.1    17.6    +      -       -      +
    315D  TYR*     1.3    84.3    -      -       +      +
    317D  SER*     1.3    58.9    +      -       -      +
    318D  LEU      3.4     0.9    +      -       -      -
    319D  SER*     4.9     1.9    +      -       -      -
    320D  PHE*     3.8    10.4    -      -       -      -
    325D  VAL*     3.2    44.8    +      -       +      +
    326D  TYR      3.1    26.4    +      -       -      -
    327D  ALA*     4.7     2.3    -      -       -      +
    328D  ASP*     5.3     6.3    -      -       -      -
    366D  PHE*     5.7     1.4    -      -       +      -
    503D  OHT      3.5    20.8    +      -       -      -
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Residues in contact with SER 317 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313D  VAL*     2.6    22.0    +      -       -      +
    314D  VAL      3.5     6.3    -      -       -      -
    315D  TYR      2.9     1.2    +      -       -      -
    316D  ARG*     1.3    77.3    -      -       -      +
    318D  LEU*     1.3    62.8    +      -       -      +
    319D  SER      3.4     2.5    -      -       -      -
    320D  PHE*     3.1    26.8    +      -       -      +
    323D  GLU      3.8    17.2    -      -       -      +
    324D  LEU*     3.5     9.2    -      -       -      +
    325D  VAL*     3.1    21.1    +      -       -      -
    353D  VAL*     3.8    22.3    -      -       -      +
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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