Contacts of the helix formed by residues 257 - 279 (chain A) in PDB entry 3QI6


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 THR 257 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213A  HIS*     4.5     6.6    -      -       -      -
    254A  GLY*     2.9     8.2    +      -       -      -
    256A  LYS*     1.3    84.6    -      -       -      +
    258A  LEU*     1.3    65.4    +      -       -      +
    259A  VAL      3.3     2.9    +      -       -      -
    260A  LEU*     3.4     6.5    +      -       -      +
    261A  ARG*     2.9    52.2    +      -       -      +
    213C  HIS*     3.7    25.8    +      -       +      +
    257C  THR*     4.5     6.2    -      -       -      +
    261C  ARG*     4.0    14.4    -      -       +      -
    340C  VAL*     3.8    15.9    -      -       +      -
    373C  ILE*     3.9    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 258 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  ALA*     5.8     0.2    -      -       +      -
     74A  VAL*     5.9     0.4    -      -       +      -
    188A  SER*     3.8     7.2    -      -       -      +
    189A  PRO*     3.7    31.0    -      -       +      -
    190A  ALA*     4.1    10.5    -      -       +      +
    209A  TYR*     3.6    27.1    -      -       +      +
    210A  ILE*     4.2     4.3    -      -       +      +
    254A  GLY      3.2     3.2    +      -       -      -
    255A  LEU*     3.2    35.6    +      -       +      +
    257A  THR*     1.3    78.2    -      -       -      +
    259A  VAL*     1.3    57.1    +      -       +      +
    261A  ARG*     3.4    13.4    -      -       -      +
    262A  MET*     2.8    69.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 259 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  LEU*     3.9    32.3    -      -       +      +
     15A  ALA*     3.9    32.5    -      -       +      +
     18A  ALA*     5.3     4.5    -      -       +      -
    190A  ALA*     4.0    21.3    -      -       +      +
    255A  LEU      4.9     0.6    +      -       -      -
    256A  LYS      5.6     0.4    -      -       -      -
    257A  THR      3.3     0.8    -      -       -      -
    258A  LEU*     1.3    79.4    -      -       +      +
    260A  LEU*     1.3    62.6    +      -       -      +
    262A  MET*     3.5     2.4    +      -       -      +
    263A  GLN*     3.3    25.8    +      -       -      +
    375C  ASP*     5.5     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 260 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  ALA*     5.6     1.6    -      -       -      +
    257A  THR*     3.8     9.4    -      -       -      +
    259A  VAL*     1.3    75.9    -      -       -      +
    261A  ARG*     1.3    65.6    +      -       -      +
    263A  GLN*     3.4    21.7    -      -       -      +
    264A  ARG*     3.4     5.5    +      -       -      +
    260C  LEU*     3.5    43.4    -      -       +      +
    261C  ARG*     3.7    20.0    -      -       +      +
    264C  ARG*     3.7    51.1    -      -       +      +
    373C  ILE*     3.9    30.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 261 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  TYR*     2.7    32.9    +      -       -      +
    210A  ILE      3.2     9.7    +      -       -      -
    212A  GLY*     3.3    18.2    +      -       -      -
    213A  HIS*     4.1     5.7    -      -       -      -
    254A  GLY      2.8    24.5    +      -       -      -
    257A  THR*     2.9    38.9    +      -       -      +
    258A  LEU*     3.4    19.3    -      -       -      +
    260A  LEU*     1.3    73.9    -      -       -      +
    262A  MET*     1.3    57.0    +      -       -      +
    264A  ARG*     3.1     3.1    +      -       -      +
    265A  HIS*     2.9    49.2    +      -       +      +
    338A  GLY      4.5     0.2    +      -       -      -
    340A  VAL*     3.9    23.3    -      -       -      -
    373A  ILE*     4.0     6.5    -      -       +      +
    257C  THR*     4.0    11.0    -      -       +      -
    260C  LEU*     3.6    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 262 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186A  PHE      3.8     8.5    -      -       -      +
    187A  ALA      3.6    20.0    -      -       -      +
    188A  SER*     3.5     9.6    -      -       -      +
    190A  ALA*     3.7    13.7    -      -       +      -
    191A  LEU*     3.8    23.8    -      -       +      -
    209A  TYR*     3.1    48.9    -      -       +      -
    258A  LEU*     2.8    47.7    +      -       +      +
    259A  VAL      4.1     1.6    -      -       -      +
    261A  ARG*     1.3    72.5    -      -       -      +
    263A  GLN*     1.3    56.6    +      -       -      +
    265A  HIS*     3.7     6.5    -      -       +      +
    266A  SER*     2.8    36.6    +      -       -      -
    307A  GLY*     4.9     0.2    -      -       -      -
    308A  GLY      4.8     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 263 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  LEU*     5.7     2.0    -      -       -      +
    259A  VAL*     3.3    13.1    +      -       -      +
    260A  LEU*     3.4    23.2    -      -       -      +
    262A  MET*     1.3    79.3    -      -       -      +
    264A  ARG*     1.3    57.4    +      -       +      +
    266A  SER*     3.3     5.4    +      -       -      -
    267A  GLU*     3.0    50.1    +      -       -      +
    264C  ARG*     2.9    33.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 264 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260A  LEU      3.4     0.8    +      -       -      -
    261A  ARG      3.1     7.2    +      -       -      +
    263A  GLN*     1.3    79.0    -      -       +      +
    265A  HIS*     1.3    64.3    +      -       -      +
    267A  GLU*     3.1    22.4    +      -       -      -
    268A  ASN*     3.0    44.4    +      -       -      +
    373A  ILE*     3.8    30.0    +      -       +      +
    374A  GLU      5.5     0.4    -      -       -      -
    375A  ASP*     5.8     1.8    +      -       -      -
    259C  VAL*     5.8     5.5    -      -       -      +
    260C  LEU*     3.4    46.2    -      -       +      +
    263C  GLN*     2.8    36.2    +      -       -      +
    264C  ARG*     6.0     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 265 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  TYR*     3.6    34.7    -      +       +      -
    261A  ARG*     2.9    43.4    +      -       +      +
    262A  MET*     3.7    11.0    -      -       +      +
    264A  ARG*     1.3    73.0    -      -       -      +
    266A  SER*     1.3    57.8    +      -       -      +
    268A  ASN*     4.0     3.0    -      -       -      +
    269A  ALA*     2.9    32.4    +      -       -      +
    308A  GLY*     3.6    18.2    -      -       -      +
    338A  GLY*     4.6     0.9    -      -       -      -
    339A  SER      3.1    33.1    +      -       -      -
    340A  VAL*     4.8     0.8    +      -       -      -
    370A  SER*     5.7     0.7    -      -       -      -
    371A  VAL*     2.7    26.8    +      -       -      +
    372A  GLY*     3.8    10.2    -      -       -      -
    373A  ILE*     4.0    11.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 266 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  LEU*     4.0     8.5    -      -       -      +
    262A  MET      2.8    20.9    +      -       -      -
    263A  GLN*     3.8     5.4    -      -       -      -
    264A  ARG      3.1     0.2    -      -       -      -
    265A  HIS*     1.3    76.4    -      -       -      +
    267A  GLU*     1.3    65.0    +      -       -      +
    270A  ALA*     3.1    21.7    +      -       -      +
    287A  TYR*     3.5     8.8    +      -       -      -
    305A  GLY*     5.1     3.6    -      -       -      -
    306A  PHE      4.2     6.9    +      -       -      -
    307A  GLY*     3.2    37.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 267 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263A  GLN*     3.0    38.8    +      -       +      +
    264A  ARG*     3.1    34.2    +      -       -      +
    266A  SER*     1.3    77.5    -      -       -      +
    268A  ASN*     1.3    63.3    +      -       -      +
    270A  ALA*     3.2     7.7    +      -       -      +
    271A  ALA*     3.1    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 268 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264A  ARG*     3.0    31.7    +      -       -      +
    265A  HIS      4.0     0.7    -      -       -      +
    267A  GLU*     1.3    78.2    -      -       -      +
    269A  ALA*     1.3    59.6    +      -       -      +
    271A  ALA*     3.2     4.9    +      -       -      +
    272A  VAL*     2.8    31.0    +      -       -      +
    371A  VAL*     3.4    18.6    -      -       +      -
    372A  GLY      2.9    21.5    +      -       -      +
    373A  ILE*     3.7     8.3    -      -       -      +
    374A  GLU      3.1    23.4    +      -       -      +
    376A  VAL*     3.5    29.6    +      -       +      +
    379A  LEU*     4.1     3.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 269 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265A  HIS      2.9    21.1    +      -       -      +
    266A  SER      3.9     0.4    -      -       -      +
    268A  ASN*     1.3    79.3    -      -       -      +
    270A  ALA*     1.3    56.0    +      -       -      +
    272A  VAL      4.3     0.4    -      -       -      +
    273A  ALA*     2.8    27.2    +      -       -      +
    287A  TYR*     3.8    10.9    -      -       +      -
    307A  GLY      3.3    20.2    -      -       -      +
    308A  GLY*     3.7    19.5    -      -       -      +
    310A  VAL*     3.5    12.8    -      -       +      +
    371A  VAL*     3.8    11.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 270 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  SER      3.1    13.9    +      -       -      +
    267A  GLU*     3.2    10.7    +      -       -      +
    269A  ALA*     1.3    75.1    -      -       -      +
    271A  ALA*     1.3    58.2    +      -       -      +
    273A  ALA*     3.4     2.8    +      -       -      +
    274A  GLU*     2.9    31.2    +      -       -      +
    287A  TYR*     4.0    20.4    +      -       +      +
    290A  LEU*     5.8     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 271 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  GLU      3.1     8.9    +      -       -      +
    268A  ASN      3.4     8.5    -      -       -      +
    270A  ALA*     1.3    78.5    -      -       -      +
    272A  VAL*     1.4    59.7    +      -       -      +
    274A  GLU*     3.9    10.7    -      -       -      +
    275A  PHE*     2.9    31.0    +      -       -      +
    376A  VAL*     3.7    24.2    -      -       +      -
    380A  LEU*     4.0     9.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 272 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268A  ASN      2.8    20.6    +      -       -      +
    269A  ALA      3.9     3.1    -      -       -      +
    271A  ALA*     1.4    75.6    -      -       -      +
    273A  ALA*     1.3    58.9    +      -       -      +
    275A  PHE*     3.3     1.7    +      -       -      +
    276A  LEU*     2.9    41.0    +      -       +      +
    310A  VAL*     4.6     4.5    -      -       +      -
    331A  PHE*     4.7     3.6    -      -       +      -
    369A  LEU*     4.2    11.7    -      -       +      -
    371A  VAL*     4.0    29.4    -      -       +      -
    376A  VAL*     5.1     1.6    -      -       +      -
    379A  LEU*     4.6    11.9    -      -       +      -
    380A  LEU*     3.9    21.3    -      -       +      -
    383A  LEU*     3.6    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 273 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269A  ALA      2.8    17.3    +      -       -      +
    270A  ALA      3.8     3.4    -      -       -      +
    272A  VAL*     1.3    77.3    -      -       -      +
    274A  GLU*     1.3    61.1    +      -       -      +
    276A  LEU*     3.4     2.0    +      -       -      +
    277A  ALA*     2.9    26.7    +      -       -      +
    285A  VAL*     3.8    17.0    -      -       +      +
    287A  TYR*     3.8    34.3    -      -       +      -
    290A  LEU*     4.6     8.5    -      -       +      -
    310A  VAL*     4.1     7.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 274 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270A  ALA      2.9    20.5    +      -       -      +
    271A  ALA*     3.9     9.7    -      -       -      +
    273A  ALA*     1.3    73.8    -      -       -      +
    275A  PHE*     1.3    65.6    +      -       -      +
    277A  ALA*     3.4    14.0    +      -       -      +
    278A  GLU*     3.4    20.3    +      -       +      +
    290A  LEU*     5.3     5.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 275 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271A  ALA      2.9    19.4    +      -       -      +
    272A  VAL      3.5     3.6    -      -       -      +
    274A  GLU*     1.3    80.4    +      -       -      +
    276A  LEU*     1.3    81.7    +      -       +      +
    278A  GLU*     3.2    11.2    +      -       -      +
    279A  HIS*     3.4    32.0    +      +       +      +
    380A  LEU*     3.8    32.5    -      -       +      -
    383A  LEU*     4.0    28.9    -      -       +      -
    384A  LYS*     4.0    25.4    -      -       +      -
    387A  LEU*     4.5     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 276 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  VAL*     2.9    30.4    +      -       +      +
    273A  ALA*     4.0     1.3    -      -       -      +
    275A  PHE*     1.3    89.0    -      -       +      +
    277A  ALA*     1.3    57.4    +      -       -      +
    278A  GLU      3.1     0.4    -      -       -      -
    279A  HIS*     3.1    16.9    +      -       +      +
    282A  ILE*     3.3    36.2    -      -       +      +
    285A  VAL*     3.8    14.6    -      -       +      -
    310A  VAL*     4.9     1.6    -      -       +      -
    312A  VAL*     3.4    26.7    -      -       +      -
    324A  LEU*     5.9     1.6    -      -       +      -
    369A  LEU*     3.7    24.0    -      -       +      -
    383A  LEU*     4.4     9.6    -      -       +      -
    387A  LEU*     3.7    29.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 277 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273A  ALA      2.9    19.3    +      -       -      +
    274A  GLU*     3.6    10.3    -      -       -      +
    275A  PHE      3.4     0.2    -      -       -      -
    276A  LEU*     1.3    73.9    -      -       -      +
    278A  GLU*     1.3    72.6    +      -       -      +
    279A  HIS      4.8     1.8    -      -       -      +
    282A  ILE*     5.2     1.6    -      -       -      +
    285A  VAL*     3.4    19.2    -      -       +      +
    290A  LEU*     5.3     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 278 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274A  GLU*     3.4    19.0    +      -       +      +
    275A  PHE*     3.2     6.9    +      -       -      +
    276A  LEU      3.1     0.6    -      -       -      -
    277A  ALA*     1.3    91.5    -      -       -      +
    279A  HIS*     1.3    62.9    +      -       -      +
    280A  PRO*     3.6     6.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 279 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275A  PHE*     3.4    29.2    +      +       +      +
    276A  LEU*     3.1    22.2    +      -       +      +
    277A  ALA      4.8     1.6    -      -       -      +
    278A  GLU*     1.3    79.4    -      -       -      +
    280A  PRO*     1.4    79.8    -      -       +      +
    281A  ALA*     3.0    40.3    +      -       +      +
    282A  ILE*     3.3    20.7    +      -       +      +
    384A  LYS*     5.0     4.5    +      -       -      -
    387A  LEU*     3.6    36.9    -      -       +      +
    388A  GLY      3.9    14.5    +      -       -      -
----------------------------------------------------------
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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