Contacts of the helix formed by residues 379 - 407 (chain A) in PDB entry 3BRW


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 379 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  HIS*     4.2    11.4    -      -       +      -
    341A  ASP*     3.4    29.8    -      -       -      +
    342A  VAL*     3.9    21.3    -      -       +      -
    343A  PRO*     5.4     0.2    -      -       -      -
    375A  ALA      3.7     1.8    +      -       -      -
    376A  CYS*     2.8    17.1    +      -       -      +
    378A  LYS*     1.3    82.0    -      -       -      +
    380A  GLU*     1.3    67.9    +      -       -      +
    381A  LYS      3.4     1.4    +      -       -      -
    382A  PHE*     3.5     2.4    +      -       +      -
    383A  ALA*     3.1    20.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 380 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  ASP*     2.8    30.1    +      -       -      +
    379A  ALA*     1.3    73.1    -      -       -      +
    381A  LYS*     1.3    82.7    +      -       +      +
    383A  ALA*     4.1     3.2    -      -       -      +
    384A  LYS*     3.4    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 381 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  ASN*     3.6    35.2    +      -       -      +
    315A  HIS*     3.7    33.1    +      -       +      +
    339A  ARG*     6.1     0.6    -      -       -      +
    341A  ASP*     5.4     0.9    -      -       -      +
    379A  ALA      3.4     0.8    +      -       -      -
    380A  GLU*     1.3    96.6    -      -       +      +
    382A  PHE*     1.3    69.5    +      -       +      +
    384A  LYS*     3.6    14.2    -      -       -      +
    385A  LEU*     3.6     7.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 382 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  ILE*     3.6    23.3    -      -       +      -
    312A  ASN      5.5     0.7    -      -       -      -
    313A  PHE*     3.5    42.4    -      +       -      -
    315A  HIS*     3.9    26.0    -      +       -      -
    376A  CYS*     3.0    45.8    -      -       +      +
    377A  TYR*     3.9    15.5    -      +       +      +
    379A  ALA*     3.5     1.7    +      -       +      -
    380A  GLU      3.4     0.4    -      -       -      -
    381A  LYS*     1.3    79.9    -      -       +      +
    383A  ALA*     1.3    60.4    +      -       -      +
    384A  LYS      3.2     0.4    -      -       -      -
    385A  LEU*     3.3    13.3    +      -       +      +
    386A  GLU*     2.8    30.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 383 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377A  TYR      3.8     9.3    +      -       -      +
    378A  LYS*     3.9    13.0    -      -       -      +
    379A  ALA      3.1    19.4    +      -       -      +
    380A  GLU*     4.1     3.8    -      -       -      +
    382A  PHE*     1.3    74.4    -      -       -      +
    384A  LYS*     1.3    63.7    -      -       -      +
    386A  GLU*     3.7     7.2    -      -       -      +
    387A  GLU*     3.1    31.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 384 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380A  GLU*     3.4    18.0    +      -       -      +
    381A  LYS*     3.6    11.7    -      -       -      +
    382A  PHE      3.2     0.4    -      -       -      -
    383A  ALA*     1.3    78.3    -      -       -      +
    385A  LEU*     1.3    63.6    +      -       -      +
    387A  GLU*     3.4    36.6    +      -       -      +
    388A  ARG*     4.0    15.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 385 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381A  LYS      3.6     7.7    +      -       -      +
    382A  PHE*     3.3    16.4    +      -       +      +
    384A  LYS*     1.3    76.8    -      -       -      +
    386A  GLU*     1.3    66.4    +      -       -      +
    388A  ARG*     3.2    39.6    +      -       -      +
    389A  THR*     3.1    21.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 386 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187A  HIS*     3.0    31.2    +      -       -      -
    188A  VAL*     3.9    13.1    -      -       +      +
    377A  TYR*     5.4    14.8    -      -       +      +
    382A  PHE*     2.8    19.4    +      -       +      +
    383A  ALA*     3.7     9.9    -      -       -      +
    384A  LYS      3.4     0.2    -      -       -      -
    385A  LEU*     1.3    75.9    -      -       -      +
    387A  GLU*     1.3    61.5    +      -       -      +
    389A  THR*     3.8    12.9    -      -       -      +
    390A  ARG*     2.9    39.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 387 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  LYS      4.7     2.8    -      -       -      +
    135A  CYS*     5.9     7.1    -      -       -      +
    383A  ALA*     3.1    20.6    +      -       -      +
    384A  LYS*     3.4    37.8    +      -       -      +
    385A  LEU      3.2     0.2    -      -       -      -
    386A  GLU*     1.3    77.1    -      -       -      +
    388A  ARG*     1.3    59.1    +      -       +      +
    390A  ARG*     3.8     5.1    +      -       -      +
    391A  ALA*     3.5    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 388 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384A  LYS*     4.0    14.1    +      -       -      +
    385A  LEU*     3.2    37.3    +      -       -      +
    387A  GLU*     1.3    76.9    -      -       -      +
    389A  THR*     1.3    66.7    +      -       -      +
    391A  ALA*     3.6     5.0    +      -       -      +
    392A  ALA*     3.2    24.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 389 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187A  HIS*     5.0     1.6    -      -       +      +
    385A  LEU*     3.1    24.5    +      -       -      +
    386A  GLU*     3.2    19.0    +      -       -      +
    388A  ARG*     1.3    77.3    -      -       -      +
    390A  ARG*     1.3    57.2    +      -       -      +
    392A  ALA*     3.1     6.3    +      -       -      +
    393A  LEU*     2.9    56.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 390 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132A  ARG*     4.1     5.3    -      -       -      +
    133A  THR      2.6    23.6    +      -       -      +
    134A  LYS      5.3     1.3    -      -       -      +
    135A  CYS*     3.7    22.6    +      -       -      +
    136A  ARG*     2.5    27.7    +      -       -      +
    137A  THR*     3.6    25.5    -      -       -      +
    184A  PHE*     3.8    32.0    -      -       +      -
    185A  ASP*     5.4     1.4    +      -       -      -
    187A  HIS*     4.0    21.7    -      -       +      -
    188A  VAL*     5.7     2.0    -      -       +      -
    386A  GLU*     2.9    31.7    +      -       -      +
    387A  GLU*     4.0     6.3    -      -       -      +
    389A  THR*     1.3    77.5    -      -       -      +
    391A  ALA*     1.3    57.1    +      -       -      +
    393A  LEU*     3.3     5.9    +      -       -      +
    394A  LEU*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 391 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  HIS*     4.9     4.3    -      -       -      -
    134A  LYS*     3.4    44.7    +      -       +      +
    387A  GLU      3.5    11.9    +      -       -      +
    388A  ARG*     4.1     4.9    -      -       -      +
    389A  THR      3.4     0.6    -      -       -      -
    390A  ARG*     1.3    78.8    -      -       -      +
    392A  ALA*     1.3    57.4    +      -       -      +
    394A  LEU*     3.3     7.7    +      -       -      +
    395A  GLU*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 392 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388A  ARG*     3.2    17.9    +      -       +      +
    389A  THR*     3.1     5.9    +      -       -      +
    391A  ALA*     1.3    79.0    -      -       -      +
    393A  LEU*     1.3    58.1    +      -       +      +
    395A  GLU*     3.4     9.7    +      -       -      +
    396A  THR*     3.0    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 393 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  PHE*     4.1    15.7    -      -       +      +
    187A  HIS*     3.9    35.7    -      -       +      +
    389A  THR*     2.9    39.6    +      -       +      +
    390A  ARG      3.8     3.4    -      -       -      +
    392A  ALA*     1.3    75.0    -      -       +      +
    394A  LEU*     1.3    60.2    +      -       -      +
    396A  THR*     3.4    16.8    -      -       +      +
    397A  LEU*     3.1    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 394 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  HIS*     3.4    40.6    -      -       +      +
    113A  VAL*     3.8    28.7    -      -       +      -
    132A  ARG*     4.7     5.8    -      -       +      +
    133A  THR*     3.6     7.4    -      -       -      +
    134A  LYS*     3.5    24.9    -      -       +      +
    184A  PHE*     3.9    28.7    -      -       +      -
    390A  ARG      2.9    17.6    +      -       -      +
    391A  ALA*     3.5     5.6    -      -       -      +
    392A  ALA      3.2     0.2    -      -       -      -
    393A  LEU*     1.3    74.5    -      -       -      +
    395A  GLU*     1.3    55.7    +      -       -      +
    397A  LEU*     3.0     7.0    +      -       +      +
    398A  TYR*     2.7    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 395 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  HIS*     3.5    37.3    -      -       +      +
    391A  ALA      3.0    13.7    +      -       -      +
    392A  ALA*     3.4    11.3    +      -       -      +
    394A  LEU*     1.3    74.3    -      -       -      +
    396A  THR*     1.3    64.6    +      -       -      +
    398A  TYR*     3.8     3.1    -      -       +      +
    399A  GLU*     2.9    52.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 396 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180A  LEU*     6.6     0.2    -      -       +      -
    392A  ALA      3.0    15.3    +      -       -      -
    393A  LEU*     3.4    22.7    -      -       +      +
    395A  GLU*     1.3    77.0    -      -       -      +
    397A  LEU*     1.3    64.9    +      -       +      +
    399A  GLU*     3.6     6.4    -      -       -      +
    400A  GLU*     3.4    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 397 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  VAL*     4.2    26.2    -      -       +      -
    180A  LEU*     3.7    45.3    -      -       +      +
    181A  ILE*     4.1     8.1    -      -       +      +
    184A  PHE*     3.9    35.7    -      -       +      -
    393A  LEU      3.1     9.1    +      -       -      +
    394A  LEU*     3.0     9.7    +      -       +      +
    396A  THR*     1.3    79.4    -      -       +      +
    398A  TYR*     1.3    68.1    +      -       -      +
    400A  GLU*     2.8    19.1    +      -       +      +
    401A  LEU*     3.1    32.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 398 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     3.6    35.2    -      +       +      -
    104A  SER*     3.4    23.5    -      -       -      -
    105A  LEU*     3.6    32.5    +      -       +      +
    111A  HIS*     3.4    42.4    -      +       +      -
    112A  LEU      4.2    10.8    -      -       -      -
    113A  VAL*     4.5    11.6    -      -       +      +
    170A  TYR*     6.0     0.5    -      -       -      -
    394A  LEU      2.7    20.1    +      -       -      +
    395A  GLU      3.8     3.8    -      -       -      +
    397A  LEU*     1.3    72.1    -      -       -      +
    399A  GLU*     1.3    72.8    +      -       +      +
    401A  LEU*     3.6     4.7    +      -       -      +
    402A  HIS*     3.1    32.2    +      +       +      +
----------------------------------------------------------
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Residues in contact with GLU 399 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  HIS*     5.8     0.6    -      -       -      -
    395A  GLU*     2.9    51.8    +      -       +      +
    396A  THR*     3.6     7.2    -      -       -      +
    398A  TYR*     1.3    83.1    -      -       +      +
    400A  GLU*     1.3    59.9    +      -       +      +
    402A  HIS*     3.0    10.0    +      -       -      +
    403A  ILE*     3.0    46.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 400 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  TYR*     4.7     3.7    +      -       +      -
    180A  LEU*     3.9    34.8    -      -       +      +
    396A  THR*     3.4    23.5    -      -       +      +
    397A  LEU*     2.8    14.5    +      -       -      +
    399A  GLU*     1.3    78.0    -      -       +      +
    401A  LEU*     1.3    61.2    +      -       +      +
    403A  ILE*     5.1     1.8    -      -       -      -
    404A  HIS*     3.2    55.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 401 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     4.1    11.6    -      -       +      -
    113A  VAL*     3.9    28.0    -      -       +      -
    172A  VAL*     3.8    24.0    -      -       +      -
    174A  TYR*     5.0     6.3    -      -       +      -
    177A  ALA*     3.5    38.6    -      -       +      +
    180A  LEU*     4.9     3.8    -      -       +      -
    181A  ILE*     4.4     6.7    -      -       +      -
    397A  LEU*     3.1    42.9    +      -       +      +
    398A  TYR*     4.1     3.8    -      -       -      +
    400A  GLU*     1.3    77.0    -      -       +      +
    402A  HIS*     1.3    58.1    -      -       -      +
    404A  HIS*     5.0     0.7    -      -       -      -
    405A  SER*     2.6    34.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 402 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     3.2    43.5    +      +       +      -
    170A  TYR*     6.2     0.7    -      +       -      -
    398A  TYR*     3.1    23.4    +      +       +      +
    399A  GLU*     3.0    13.8    +      -       -      +
    401A  LEU*     1.3    76.4    -      -       -      +
    403A  ILE*     1.3    88.0    +      -       +      +
    406A  GLN*     3.1    46.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399A  GLU*     3.0    28.6    +      -       +      +
    400A  GLU*     4.7     2.2    -      -       -      +
    402A  HIS*     1.3    96.3    -      -       +      +
    404A  HIS*     1.3    63.1    +      -       +      +
    406A  GLN*     3.4     6.9    +      -       +      +
    407A  SER*     3.0    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  TYR*     3.3    56.2    +      +       +      -
    400A  GLU*     3.2    46.7    +      -       -      +
    403A  ILE*     1.3    80.8    -      -       +      +
    405A  SER*     1.3    62.3    +      -       -      +
    407A  SER*     3.7    14.4    +      -       -      -
    408A  MET*     3.4    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     4.4     7.9    -      -       -      -
    171A  PRO      4.0    12.3    -      -       -      -
    172A  VAL*     3.4     9.5    -      -       -      +
    173A  LEU*     3.0    37.5    +      -       -      +
    174A  TYR*     3.8     4.7    +      -       -      +
    401A  LEU*     2.6    26.1    +      -       -      -
    402A  HIS      4.0     2.0    -      -       -      -
    404A  HIS*     1.3    77.9    -      -       -      +
    406A  GLN*     1.3    61.5    +      -       -      +
    408A  MET*     3.3     6.5    -      -       -      +
    409A  MET*     3.2    22.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  TYR*     4.5     7.5    +      -       -      +
    402A  HIS*     3.1    44.4    +      -       +      +
    403A  ILE*     3.5     8.1    -      -       +      +
    404A  HIS      3.2     0.2    -      -       -      -
    405A  SER*     1.3    75.7    +      -       -      +
    407A  SER*     1.3    51.1    +      -       -      +
    408A  MET      2.8     8.4    +      -       -      -
    409A  MET*     3.0     7.8    +      -       -      +
    410A  GLY      2.7    40.8    +      -       -      +
    411A  LEU*     3.0    36.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  ILE*     3.0    20.1    +      -       -      +
    404A  HIS*     3.7    15.2    +      -       -      -
    405A  SER      3.6     0.2    -      -       -      -
    406A  GLN*     1.3    72.2    -      -       -      +
    408A  MET*     1.3    59.3    +      -       -      +
    409A  MET      3.3     1.6    -      -       -      -
    410A  GLY*     4.0     8.5    -      -       -      +
----------------------------------------------------------
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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