Contacts of the helix formed by residues 373 - 395 (chain A) in PDB entry 1U2X


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with SER 373 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371A  PRO      3.5     2.2    +      -       -      -
    372A  LEU*     1.3    76.6    -      -       -      +
    374A  GLU*     1.3    57.9    +      -       -      +
    375A  GLU*     3.4    10.3    +      -       -      +
    376A  GLU*     2.9    38.3    +      -       -      +
    377A  LEU*     2.9    31.8    +      -       -      +
    435A  LYS*     4.7     3.1    -      -       -      +
    472A  HIS*     4.7     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 374 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    373A  SER*     1.3    72.5    -      -       -      +
    375A  GLU*     1.3    56.9    +      -       -      +
    377A  LEU*     3.4     3.9    +      -       -      +
    378A  ALA*     2.9    29.5    +      -       -      +
    435A  LYS*     4.6    25.6    -      -       +      +
    436A  VAL      4.4    10.8    +      -       -      +
    437A  VAL*     3.9    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 375 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    373A  SER*     3.2     8.5    +      -       -      +
    374A  GLU*     1.3    79.1    -      -       -      +
    376A  GLU*     1.3    58.8    +      -       +      +
    378A  ALA*     3.5    12.1    +      -       -      +
    379A  LYS*     2.9    51.3    +      -       -      +
    382A  GLU*     4.7     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 376 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372A  LEU*     3.2    16.7    -      -       +      +
    373A  SER*     2.9    40.3    +      -       -      +
    375A  GLU*     1.3    74.7    -      -       +      +
    377A  LEU*     1.3    65.7    +      -       -      +
    379A  LYS*     3.3    14.1    +      -       -      +
    380A  SER*     3.0    21.1    +      -       -      -
    468A  PHE*     3.5    42.6    -      -       +      +
    471A  ARG*     5.7     2.3    +      -       -      +
    472A  HIS*     2.9    32.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 377 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353A  ILE*     3.8    28.9    -      -       +      -
    364A  TYR*     3.5    26.8    -      -       +      -
    366A  THR*     3.9    21.3    -      -       +      -
    370A  ASN*     4.7     0.9    -      -       -      +
    372A  LEU*     3.8    27.6    -      -       +      +
    373A  SER      2.9    21.7    +      -       -      +
    374A  GLU*     3.6     4.3    -      -       -      +
    376A  GLU*     1.3    76.8    -      -       -      +
    378A  ALA*     1.3    61.2    +      -       -      +
    380A  SER*     3.2     4.9    +      -       -      -
    381A  LEU*     3.1    19.1    +      -       -      +
    435A  LYS*     4.3    20.4    -      -       +      +
    437A  VAL*     4.1    23.8    -      -       +      -
    465A  TYR*     4.5     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 378 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374A  GLU      2.9    17.6    +      -       -      +
    375A  GLU*     3.6    15.3    -      -       -      +
    377A  LEU*     1.3    76.4    -      -       -      +
    379A  LYS*     1.3    63.2    +      -       -      +
    381A  LEU*     3.4     4.3    +      -       -      +
    382A  GLU*     2.9    32.5    +      -       -      +
    437A  VAL*     3.8    14.4    -      -       +      +
    439A  ILE*     4.0    20.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 379 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375A  GLU*     2.9    49.2    +      -       -      +
    376A  GLU*     3.3    15.0    +      -       -      +
    378A  ALA*     1.3    76.5    -      -       -      +
    380A  SER*     1.3    56.4    +      -       -      +
    382A  GLU*     3.5    14.6    -      -       -      +
    383A  PHE*     2.9    27.4    +      -       -      +
    464A  THR*     5.3     0.4    -      -       -      +
    468A  PHE*     3.9    34.0    -      -       +      -
    471A  ARG*     5.0     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 380 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364A  TYR*     2.8    19.6    +      -       -      -
    372A  LEU*     5.3     1.8    -      -       -      -
    376A  GLU      3.0    13.1    +      -       -      -
    377A  LEU*     3.2     9.8    +      -       -      -
    379A  LYS*     1.3    73.0    -      -       -      +
    381A  LEU*     1.3    66.7    +      -       -      +
    383A  PHE*     3.2     4.9    +      -       -      +
    384A  GLY      3.1    16.6    +      -       -      -
    461A  ALA*     2.6    33.4    +      -       -      -
    464A  THR*     3.1    21.4    +      -       -      -
    465A  TYR*     3.7     8.2    +      -       -      -
    468A  PHE*     4.3     4.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 381 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    355A  GLN*     3.8    22.4    -      -       +      -
    362A  LEU*     3.4    30.7    -      -       +      +
    363A  MSE      3.9     8.5    -      -       -      +
    364A  TYR*     3.4    56.3    -      -       +      +
    377A  LEU      3.1     9.6    +      -       -      +
    378A  ALA      3.7     4.7    -      -       -      +
    380A  SER*     1.3    72.8    +      -       -      +
    382A  GLU*     1.4    60.2    +      -       -      +
    384A  GLY*     3.0     3.6    +      -       -      +
    385A  THR*     2.9    26.3    +      -       -      +
    437A  VAL*     4.0    18.6    -      -       +      +
    439A  ILE*     3.7    20.4    -      -       +      -
    461A  ALA*     4.6     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 382 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375A  GLU*     4.7     5.2    -      -       -      +
    378A  ALA*     2.9    31.4    +      -       -      +
    379A  LYS*     3.5    14.4    +      -       -      +
    381A  LEU*     1.4    76.7    -      -       -      +
    383A  PHE*     1.3    60.3    +      -       -      +
    385A  THR*     3.5     4.0    -      -       +      +
    386A  THR*     2.7    36.0    +      -       -      +
    403A  TYR*     4.6     0.7    -      -       -      -
    411A  PHE*     4.1    23.1    -      -       +      -
    439A  ILE*     3.6    21.5    -      -       +      +
    442A  ARG*     4.8     4.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 383 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  MSE      4.2    25.1    -      -       +      -
     24A  ILE*     4.2    21.5    -      -       +      -
     25A  PRO*     4.5     8.3    -      -       +      -
    130A  LEU*     4.5     9.2    -      -       +      -
    379A  LYS      2.9    13.9    +      -       -      +
    380A  SER      3.2     7.8    +      -       -      +
    382A  GLU*     1.3    76.7    -      -       -      +
    384A  GLY*     1.3    56.4    +      -       -      +
    386A  THR*     3.3     1.4    +      -       -      -
    387A  LEU*     2.9    38.1    +      -       +      +
    403A  TYR*     3.5    45.9    -      +       -      +
    460A  GLY*     3.5    33.4    -      -       -      -
    463A  LEU*     4.6     6.5    -      -       +      -
    464A  THR*     3.4    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 384 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380A  SER      3.1     8.2    +      -       -      -
    381A  LEU      3.0     7.4    +      -       -      -
    383A  PHE*     1.3    78.3    -      -       -      +
    385A  THR*     1.3    56.7    +      -       -      +
    387A  LEU*     3.7     1.7    -      -       -      +
    388A  ALA*     3.0    29.3    +      -       -      +
    457A  ILE*     3.5    35.3    -      -       -      -
    460A  GLY*     4.2     4.5    -      -       -      -
    461A  ALA*     3.9     7.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 385 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362A  LEU*     3.7    19.8    -      -       -      +
    381A  LEU      2.9    14.7    +      -       -      +
    382A  GLU*     3.5    15.5    -      -       -      +
    384A  GLY*     1.3    73.2    -      -       -      +
    386A  THR*     1.3    62.2    +      -       -      +
    388A  ALA*     3.8     5.9    -      -       -      +
    389A  ALA*     3.0    28.6    +      -       -      +
    411A  PHE*     4.3     3.4    -      -       +      -
    439A  ILE*     4.3    10.5    -      -       +      -
    440A  PRO      4.3     3.4    -      -       -      +
    441A  THR*     3.3    12.8    -      -       -      +
    442A  ARG*     2.9    43.2    +      -       +      +
    457A  ILE*     4.6     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 386 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382A  GLU*     2.7    24.7    +      -       -      +
    383A  PHE      3.7     0.4    -      -       -      -
    385A  THR*     1.3    75.2    -      -       -      +
    387A  LEU*     1.3    59.8    +      -       -      +
    389A  ALA*     3.2     1.2    +      -       -      +
    390A  ALA*     2.8    29.8    +      -       -      +
    403A  TYR*     3.4    33.2    +      -       +      +
    406A  GLY*     3.5     5.4    -      -       -      -
    407A  LEU*     3.7    35.3    -      -       +      +
    442A  ARG*     2.9    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 387 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  THR*     3.9    17.3    -      -       +      -
    127A  LEU*     5.9     0.7    -      -       +      -
    130A  LEU*     4.0    37.7    -      -       +      -
    383A  PHE*     2.9    20.2    +      -       +      +
    384A  GLY      3.7     3.8    -      -       -      +
    386A  THR*     1.3    75.8    -      -       -      +
    388A  ALA*     1.3    63.0    +      -       -      +
    390A  ALA*     3.3     5.4    +      -       -      +
    391A  ARG*     3.1    21.5    +      -       -      +
    397A  ILE*     4.1    20.2    -      -       +      -
    403A  TYR*     3.8    21.0    -      -       +      -
    456A  THR*     3.7    24.7    -      -       +      +
    459A  ALA*     4.8     1.8    -      -       +      -
    460A  GLY*     3.8    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 388 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384A  GLY      3.0    17.7    +      -       -      +
    385A  THR*     3.8     4.5    -      -       -      +
    387A  LEU*     1.3    80.2    -      -       -      +
    389A  ALA*     1.3    56.2    +      -       -      +
    391A  ARG*     3.3     2.4    +      -       -      +
    392A  ALA*     2.9    29.2    +      -       -      +
    444A  VAL*     5.8     0.2    -      -       -      -
    453A  LEU*     4.0    20.0    -      -       +      +
    456A  THR*     3.7    11.1    -      -       -      +
    457A  ILE*     3.5    27.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 389 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385A  THR      3.0    19.3    +      -       -      +
    386A  THR      3.5     4.7    -      -       -      +
    388A  ALA*     1.3    72.9    -      -       -      +
    390A  ALA*     1.3    65.8    +      -       -      +
    392A  ALA*     3.5     2.7    +      -       -      +
    393A  SER*     2.9    29.8    +      -       -      -
    406A  GLY*     4.2     5.8    -      -       -      +
    409A  VAL*     3.9    24.0    -      -       +      -
    442A  ARG*     3.8    22.6    +      -       +      +
    444A  VAL*     4.0    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 390 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386A  THR      2.8    13.1    +      -       -      +
    387A  LEU      3.4    10.1    -      -       -      +
    388A  ALA      3.2     0.2    -      -       -      -
    389A  ALA*     1.3    75.4    -      -       -      +
    391A  ARG*     1.3    55.9    +      -       -      +
    393A  SER*     3.0     6.5    +      -       -      -
    394A  LEU*     2.9    33.9    +      -       +      +
    397A  ILE*     4.1    10.3    -      -       +      -
    402A  ASP      3.4    25.8    -      -       -      +
    403A  TYR*     3.9     6.7    -      -       -      +
    405A  VAL*     4.4     3.4    -      -       +      -
    406A  GLY*     3.5    17.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 391 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116A  LEU      5.9     0.2    +      -       -      -
    122A  ILE*     3.9    23.3    -      -       -      +
    126A  THR*     3.8    18.6    +      -       -      -
    387A  LEU      3.1    15.9    +      -       -      +
    388A  ALA      3.9     3.4    -      -       -      +
    390A  ALA*     1.3    74.9    -      -       -      +
    392A  ALA*     1.3    56.7    +      -       -      +
    395A  GLY*     2.7    35.2    +      -       -      +
    396A  ASP*     4.3    12.2    -      -       -      +
    397A  ILE*     4.1    19.7    -      -       +      +
    449A  LEU*     3.3    30.5    -      -       +      +
    451A  VAL*     3.0    30.5    +      -       -      +
    452A  GLY      3.3     9.3    +      -       -      -
    453A  LEU*     3.6    10.1    -      -       +      +
    456A  THR*     3.3    33.0    +      -       +      +
----------------------------------------------------------
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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  ALA      2.9    16.5    +      -       -      +
    389A  ALA      3.8     3.1    -      -       -      +
    390A  ALA      3.3     0.2    -      -       -      -
    391A  ARG*     1.3    77.9    -      -       -      +
    393A  SER*     1.3    56.8    +      -       -      +
    444A  VAL*     3.4    34.3    -      -       +      -
    447A  PRO*     3.2    14.0    -      -       +      +
    448A  VAL*     3.1    30.1    +      -       -      +
    449A  LEU*     4.2     8.5    -      -       -      -
    453A  LEU*     4.0    13.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 393 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    389A  ALA      2.9    15.5    +      -       -      -
    390A  ALA      3.0     8.8    +      -       -      -
    392A  ALA*     1.3    77.7    -      -       -      +
    394A  LEU*     1.3    61.9    +      -       -      +
    405A  VAL*     4.4     4.7    -      -       -      -
    409A  VAL*     3.8     7.3    -      -       -      +
    444A  VAL*     4.0     7.2    -      -       -      +
    448A  VAL*     3.0    14.3    -      -       -      +
    393B  SER*     3.7    33.7    +      -       -      -
    444B  VAL*     5.3     2.1    -      -       -      +
    447B  PRO*     6.5     0.4    -      -       -      -
    448B  VAL*     3.6    23.8    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    390A  ALA      2.9    18.3    +      -       -      +
    393A  SER*     1.3    78.8    -      -       -      +
    395A  GLY*     1.3    60.3    +      -       -      +
    396A  ASP*     3.6    19.1    +      -       -      +
    397A  ILE*     5.1     0.2    -      -       +      -
    398A  ARG*     4.3     3.4    -      -       -      +
    402A  ASP*     3.7    44.4    -      -       +      +
    405A  VAL*     4.2     8.5    -      -       +      -
    448A  VAL*     3.7     5.4    -      -       -      +
    393B  SER*     3.5    25.4    -      -       -      +
    394B  LEU*     3.0    36.6    -      -       +      -
    405B  VAL*     4.2    18.5    -      -       +      +
    408B  LYS*     5.6     4.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 395 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    391A  ARG      2.7    21.5    +      -       -      -
    394A  LEU*     1.3    72.5    -      -       -      +
    396A  ASP*     1.3    64.3    +      -       -      +
    448A  VAL*     3.4    17.2    -      -       -      +
    449A  LEU*     3.2    30.3    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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