Contacts of the helix formed by residues 295 - 323 (chain A) in PDB entry 6YBO


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 ASP 295 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  ARG*     4.2     8.7    -      -       -      +
    293A  THR      4.1     0.8    +      -       -      -
    294A  GLU*     1.3    76.4    -      -       -      +
    296A  PHE*     1.3    66.0    +      -       -      +
    297A  ASP*     3.1    24.6    +      -       -      +
    298A  GLY*     3.0    17.8    +      -       -      -
    299A  VAL*     3.0    12.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  VAL      5.0     1.8    -      -       -      -
     31A  ARG*     4.1    18.1    -      -       +      +
     32A  ARG*     3.3    66.4    -      -       +      -
     34A  LEU*     3.7    36.8    -      -       +      -
    295A  ASP*     1.3    76.9    -      -       +      +
    297A  ASP*     1.3    65.3    +      -       -      +
    299A  VAL*     3.1    24.9    +      -       +      +
    300A  TRP*     3.0    33.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  ARG*     5.4     3.8    +      -       -      -
    295A  ASP*     3.1    15.2    +      -       -      +
    296A  PHE*     1.3    78.0    -      -       -      +
    298A  GLY*     1.3    58.2    +      -       -      +
    300A  TRP*     3.4    10.6    +      -       -      +
    301A  ALA*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294A  GLU*     3.8    29.2    -      -       -      +
    295A  ASP*     3.0    16.2    +      -       -      -
    297A  ASP*     1.3    75.7    -      -       -      +
    299A  VAL*     1.3    62.9    +      -       -      +
    301A  ALA*     3.7     7.4    -      -       -      +
    302A  SER*     2.9    26.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  VAL*     3.6    38.6    -      -       +      +
     31A  ARG*     3.5    39.0    -      -       -      +
    290A  PRO*     3.9    20.9    -      -       +      +
    294A  GLU*     4.3     0.4    -      -       -      +
    295A  ASP      3.0    17.1    +      -       -      +
    296A  PHE*     3.1    18.3    +      -       +      +
    298A  GLY*     1.3    77.6    -      -       -      +
    300A  TRP*     1.3    70.7    +      -       +      +
    302A  SER*     3.3     2.4    +      -       -      -
    303A  ALA*     3.0    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  VAL*     3.8    40.8    -      -       +      -
     34A  LEU*     4.0    26.7    -      -       +      -
     38A  GLU*     5.3     2.8    +      -       +      -
     39A  SER*     4.2     9.2    -      -       -      -
     42A  ARG*     3.4    69.1    -      -       +      +
     43A  LEU*     4.1    12.6    -      -       +      -
     46A  LEU*     3.9    27.6    -      -       +      +
    296A  PHE*     3.0    37.2    +      +       +      +
    297A  ASP*     4.1     8.1    -      -       -      +
    298A  GLY      3.3     0.2    -      -       -      -
    299A  VAL*     1.3    82.2    -      -       +      +
    301A  ALA*     1.3    60.1    +      -       -      +
    303A  ALA*     3.4     2.3    +      -       +      +
    304A  ALA*     2.9    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259A  ARG*     5.2     0.2    -      -       -      -
    297A  ASP      3.0    17.8    +      -       -      +
    298A  GLY*     3.7     8.3    -      -       -      +
    299A  VAL      3.3     0.2    -      -       -      -
    300A  TRP*     1.3    77.5    -      -       -      +
    302A  SER*     1.3    56.4    +      -       -      +
    304A  ALA*     3.4     6.5    +      -       -      +
    305A  GLY*     2.9    25.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259A  ARG*     3.7    26.4    +      -       -      +
    288A  PHE*     3.3    22.1    -      -       -      -
    290A  PRO*     4.2    14.2    -      -       -      +
    291A  PRO*     4.4     8.3    -      -       -      +
    294A  GLU*     6.0     0.9    -      -       -      -
    298A  GLY      2.9    18.8    +      -       -      -
    299A  VAL      3.6     4.3    -      -       -      -
    301A  ALA*     1.3    76.8    -      -       -      +
    303A  ALA*     1.3    62.0    +      -       -      +
    305A  GLY*     3.2     2.4    +      -       -      -
    306A  CYS*     3.1    22.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  PHE*     3.6    29.4    -      -       +      -
     18A  VAL*     4.0    12.8    -      -       +      -
     43A  LEU*     4.6     2.5    -      -       +      -
     46A  LEU*     4.2    12.8    -      -       +      -
    288A  PHE*     3.7    15.4    -      -       +      -
    299A  VAL      3.0    16.9    +      -       -      +
    300A  TRP*     3.8     6.1    -      -       +      +
    302A  SER*     1.3    76.5    -      -       -      +
    304A  ALA*     1.3    62.6    +      -       -      +
    306A  CYS*     3.2    19.0    +      -       -      +
    307A  MET*     3.6     4.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  PRO*     5.7     0.9    -      -       -      +
     46A  LEU*     4.3    16.9    -      -       +      +
    300A  TRP      2.9    18.2    +      -       -      +
    301A  ALA*     3.7     6.7    -      -       -      +
    303A  ALA*     1.3    76.5    -      -       -      +
    305A  GLY*     1.3    57.4    +      -       -      +
    307A  MET*     3.2    17.9    +      -       +      +
    308A  ARG*     3.0    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259A  ARG*     4.4    12.3    -      -       -      -
    301A  ALA      2.9    15.5    +      -       -      -
    302A  SER      3.2     4.7    +      -       -      -
    303A  ALA      3.2     0.4    -      -       -      -
    304A  ALA*     1.3    73.9    -      -       -      +
    306A  CYS*     1.3    64.5    +      -       -      +
    308A  ARG*     4.2     9.6    -      -       -      -
    309A  ASN*     2.9    35.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  PHE*     4.3     0.4    -      -       +      -
    259A  ARG*     3.8    10.2    -      -       -      +
    260A  PHE*     3.6    33.0    -      -       -      -
    286A  PHE*     3.6    45.2    -      -       +      -
    288A  PHE*     4.0    23.3    -      -       -      -
    302A  SER      3.1    19.4    +      -       -      -
    303A  ALA      3.2     9.6    +      -       -      +
    305A  GLY*     1.3    78.5    -      -       -      +
    307A  MET*     1.3    61.3    +      -       -      +
    309A  ASN*     4.1     0.2    -      -       -      +
    310A  TYR*     3.3    15.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  PRO*     3.8    23.1    -      -       +      -
     11A  PHE*     3.6    43.4    -      -       +      -
     13A  PHE*     3.9    20.2    -      -       +      -
     46A  LEU*     3.6    38.1    -      -       +      +
     48A  ALA*     4.3    11.4    -      -       +      +
    286A  PHE*     3.9    14.6    -      -       +      -
    303A  ALA      4.0    12.8    -      -       -      +
    304A  ALA*     3.2    12.4    +      -       -      +
    306A  CYS*     1.3    74.1    -      -       -      +
    308A  ARG*     1.3    65.9    +      -       -      +
    310A  TYR*     3.3     3.5    +      -       -      +
    311A  LEU*     3.0    28.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  TYR*     4.0    52.7    +      -       +      +
      5A  PRO*     5.4     1.2    -      -       +      +
    304A  ALA      3.0    16.8    +      -       -      +
    305A  GLY*     3.4     8.7    +      -       -      +
    307A  MET*     1.3    76.9    -      -       -      +
    309A  ASN*     1.3    60.8    +      -       -      +
    311A  LEU*     3.2     3.7    +      -       -      +
    312A  ILE*     2.9    50.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259A  ARG*     4.0    21.8    -      -       -      +
    260A  PHE*     2.9    28.7    +      -       +      +
    261A  GLY*     4.0    18.1    -      -       -      -
    265A  LEU*     6.4     0.9    -      -       +      -
    305A  GLY*     2.9    19.2    +      -       -      +
    306A  CYS      4.1     1.1    -      -       -      +
    308A  ARG*     1.3    77.7    -      -       -      +
    310A  TYR*     1.3    65.6    +      -       -      +
    312A  ILE*     3.4    14.3    +      -       -      +
    313A  LEU*     3.0    35.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  PHE*     3.7    28.0    -      +       +      -
    246A  LEU*     4.1    17.9    -      -       +      -
    260A  PHE*     3.8    24.9    -      +       +      -
    272A  VAL*     3.8    24.2    -      -       +      +
    275A  LEU*     4.0    18.2    -      -       +      +
    276A  GLU*     2.6    30.7    +      -       -      +
    284A  ARG*     3.2    33.1    +      -       +      +
    286A  PHE*     4.6     0.9    -      -       +      -
    306A  CYS      3.3    10.7    +      -       -      +
    307A  MET      3.3     8.6    +      -       -      +
    309A  ASN*     1.3    78.6    -      -       -      +
    311A  LEU*     1.3    61.3    +      -       +      +
    313A  LEU*     3.3     3.3    +      -       -      +
    314A  LYS*     2.8    36.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  TYR*     3.5    42.5    -      -       +      +
      4A  GLN      3.8     3.4    -      -       -      +
      5A  PRO*     3.7    29.6    -      -       +      -
      9A  ASP*     4.0    18.8    -      -       -      +
     11A  PHE*     4.0    17.3    -      -       +      -
    307A  MET      3.0    18.3    +      -       -      +
    308A  ARG      3.7     6.1    -      -       -      +
    310A  TYR*     1.3    75.5    -      -       +      +
    312A  ILE*     1.3    64.9    +      -       -      +
    314A  LYS*     3.4    19.3    +      -       +      +
    315A  GLU*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  TYR*     3.8    33.7    -      -       +      -
    308A  ARG*     2.9    46.2    +      -       +      +
    309A  ASN*     3.9    15.3    -      -       -      +
    311A  LEU*     1.3    74.8    -      -       -      +
    313A  LEU*     1.3    69.1    +      -       +      +
    315A  GLU*     3.1     4.9    +      -       -      +
    316A  ARG*     3.0    52.0    +      -       +      +
    383A  LEU*     5.9     0.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 313 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260A  PHE*     4.1    13.7    -      -       +      -
    261A  GLY*     5.1     1.1    -      -       -      -
    265A  LEU*     4.3    16.6    -      -       +      -
    268A  ALA*     3.7    35.7    -      -       +      +
    269A  PHE*     4.1    14.8    -      -       +      -
    272A  VAL*     4.0    14.5    -      -       +      +
    309A  ASN*     3.0    26.6    +      -       +      +
    310A  TYR      3.8     2.7    -      -       -      +
    312A  ILE*     1.3    81.1    -      -       +      +
    314A  LYS*     1.3    57.8    +      -       -      +
    316A  ARG*     3.3     4.0    +      -       +      +
    317A  ALA*     2.9    32.7    +      -       -      +
    383A  LEU*     3.5    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 314 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  ASP*     4.6    13.1    +      -       -      -
    272A  VAL*     3.6    15.1    -      -       +      +
    276A  GLU*     3.8    37.7    +      -       +      +
    310A  TYR*     2.8    26.2    +      -       +      +
    311A  LEU*     3.6    19.3    -      -       +      +
    312A  ILE      3.2     0.2    -      -       -      -
    313A  LEU*     1.3    77.4    -      -       -      +
    315A  GLU*     1.3    61.4    +      -       -      +
    317A  ALA*     4.0     1.9    -      -       -      +
    318A  ALA*     3.0    26.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  TYR*     2.6    39.0    +      -       +      -
    311A  LEU      3.1    13.8    +      -       -      +
    312A  ILE      3.1     5.7    +      -       -      +
    314A  LYS*     1.3    77.8    -      -       -      +
    316A  ARG*     1.3    79.9    +      -       -      +
    318A  ALA*     3.4     5.1    +      -       -      +
    319A  ALA*     3.0    29.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 316 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  TYR*     3.8    16.8    +      -       -      -
    269A  PHE*     3.9    14.4    -      -       +      -
    312A  ILE*     3.0    31.6    +      -       +      +
    313A  LEU*     3.9     4.7    -      -       -      +
    315A  GLU*     1.3    94.3    +      -       -      +
    317A  ALA*     1.3    58.7    +      -       -      +
    319A  ALA*     3.4     7.8    +      -       -      +
    320A  PHE*     3.0    28.1    +      -       -      +
    382A  HIS*     3.4    23.7    -      -       -      +
    383A  LEU*     2.9    31.9    +      -       +      +
    384A  LEU      3.7     3.8    +      -       -      -
    385A  GLY*     3.5    19.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 317 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269A  PHE*     3.7    20.1    -      -       +      +
    272A  VAL*     4.8     0.4    -      -       +      -
    273A  ASP*     3.8    40.1    -      -       +      +
    276A  GLU*     6.2     1.6    -      -       +      -
    313A  LEU      2.9    17.5    +      -       -      +
    314A  LYS*     4.0     4.9    -      -       -      +
    316A  ARG*     1.3    75.8    -      -       -      +
    318A  ALA*     1.3    62.7    +      -       -      +
    320A  PHE*     3.3     3.1    +      -       -      +
    321A  ARG*     3.1    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 318 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  LYS*     3.0    20.4    +      -       +      +
    315A  GLU*     3.7     5.8    -      -       -      +
    317A  ALA*     1.3    78.1    -      -       -      +
    319A  ALA*     1.3    62.1    +      -       -      +
    321A  ARG*     3.3     5.3    +      -       -      +
    322A  ALA*     3.0    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 319 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  GLU*     3.0    19.8    +      -       +      +
    316A  ARG*     3.7    10.1    -      -       -      +
    318A  ALA*     1.3    76.1    -      -       -      +
    320A  PHE*     1.3    63.5    +      -       -      +
    322A  ALA*     3.4     5.3    +      -       -      +
    323A  ASP*     3.1    24.8    +      -       -      +
    382A  HIS*     3.5    17.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269A  PHE*     4.3    12.8    -      +       +      -
    270A  TRP*     4.0    17.5    -      +       -      -
    273A  ASP*     4.7     2.5    -      -       -      -
    316A  ARG      3.0    17.5    +      -       -      +
    317A  ALA*     3.4     7.0    -      -       -      +
    319A  ALA*     1.3    79.0    -      -       -      +
    321A  ARG*     1.3    98.7    -      -       +      +
    322A  ALA      3.3     0.2    +      -       -      -
    323A  ASP      3.4     2.3    +      -       -      -
    326A  VAL*     3.2    62.2    -      -       +      +
    330A  LEU*     5.3     1.1    -      -       +      -
    375A  LEU*     4.2    17.3    -      -       +      -
    378A  LEU      4.2     0.2    -      -       -      -
    379A  ALA*     3.6    42.6    -      -       +      -
    382A  HIS*     3.7    20.8    +      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270A  TRP*     4.0    14.1    -      -       -      -
    273A  ASP*     2.7    44.0    +      -       -      +
    277A  SER*     4.6    10.6    +      -       -      +
    317A  ALA      3.1    15.4    +      -       -      +
    318A  ALA*     4.0     5.2    -      -       -      +
    320A  PHE*     1.3    91.7    -      -       +      +
    322A  ALA*     1.3    57.8    +      -       -      +
    323A  ASP      3.4     0.6    +      -       -      -
    326A  VAL*     4.9     2.6    -      -       -      +
    327A  GLN*     3.0    26.3    +      -       -      +
    330A  LEU*     3.8    36.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    318A  ALA      3.0    17.2    +      -       -      +
    319A  ALA*     4.0     5.8    -      -       -      +
    320A  PHE      3.2     0.2    -      -       -      -
    321A  ARG*     1.3    76.2    -      -       -      +
    323A  ASP*     1.3    63.3    +      -       -      +
    324A  PRO*     3.3     9.7    -      -       -      +
    327A  GLN*     3.7    11.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  ALA      3.1    15.4    +      -       -      +
    320A  PHE      3.4     9.1    +      -       -      +
    322A  ALA*     1.3    76.0    -      -       -      +
    324A  PRO*     1.3    73.3    -      -       -      +
    325A  GLU*     2.9    19.9    +      -       -      +
    326A  VAL*     3.0    19.4    +      -       +      +
    327A  GLN*     3.0    13.4    +      -       -      +
    382A  HIS*     2.7    27.4    +      -       +      +
    387A  ARG*     2.8    25.2    +      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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