Contacts of the helix formed by residues 369 - 396 (chain D) in PDB entry 6V3O


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 GLU 369 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1002C  SO4      4.0     8.3    +      -       -      -
    330D  LEU      5.1     0.7    -      -       -      +
    331D  SER*     3.8    23.9    -      -       -      +
    332D  MET      4.3     2.9    -      -       -      +
    366D  PRO*     3.0    31.1    -      -       -      +
    367D  PRO      3.0     5.0    +      -       -      -
    368D  ASN*     1.3    92.3    +      -       -      +
    370D  PRO*     1.3    68.2    -      -       -      +
    371D  TYR      3.4     2.5    -      -       -      -
    372D  ARG*     3.2    56.7    +      -       +      +
    373D  VAL*     3.2    15.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 370 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332D  MET      3.5    19.5    -      -       -      +
    333D  TRP*     3.6    18.6    -      -       -      +
    335D  CYS*     3.9    17.9    -      -       +      -
    339D  LEU*     3.5    24.6    -      -       +      +
    340D  ARG*     5.4     2.0    -      -       +      +
    343D  ALA*     4.1    15.6    -      -       +      +
    367D  PRO      4.7     4.0    -      -       -      +
    368D  ASN      3.6     7.2    -      -       -      +
    369D  GLU*     1.3    86.9    -      -       -      +
    371D  TYR*     1.3    62.0    +      -       +      +
    373D  VAL*     3.0    17.6    +      -       +      +
    374D  ILE*     3.2    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 371 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330D  LEU*     3.9    32.5    -      -       +      +
    332D  MET*     3.6    35.0    -      -       +      -
    334D  ARG      2.9    29.0    +      -       -      -
    335D  CYS*     3.6     8.1    -      -       +      -
    339D  LEU*     3.5    23.1    -      -       +      -
    369D  GLU      3.4     0.4    -      -       -      -
    370D  PRO*     1.3    78.0    -      -       +      +
    372D  ARG*     1.3    57.4    +      -       -      +
    374D  ILE*     3.2     7.4    -      -       +      +
    375D  LEU*     3.1    37.2    +      -       +      +
    419D  CYS*     3.9    19.5    -      -       +      -
    422D  SER*     3.0    20.3    +      -       -      -
    423D  LEU*     3.5    37.8    +      -       +      +
    426D  CYS*     4.5     0.9    -      -       -      +
    428D  ASP*     5.6     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 372 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185C  SER*     3.4    23.4    +      -       -      +
   1002C  SO4      3.1    29.4    +      -       -      -
    327D  MET*     2.9    48.1    +      -       +      +
    328D  PHE*     3.2    32.0    +      -       -      +
    330D  LEU      3.5    14.0    +      -       -      +
    331D  SER*     4.3     6.5    -      -       -      +
    365D  ILE      6.0     4.3    -      -       -      +
    366D  PRO*     5.4     5.9    -      -       +      +
    369D  GLU*     3.2    44.2    +      -       +      +
    371D  TYR*     1.3    76.5    -      -       -      +
    373D  VAL*     1.3    60.0    +      -       +      +
    376D  GLY*     2.9    25.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 373 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    343D  ALA*     3.6    30.5    -      -       +      +
    346D  LEU*     4.1    16.6    -      -       +      +
    347D  HIS*     4.2    20.0    -      -       +      +
    365D  ILE      5.5     2.7    -      -       -      +
    366D  PRO      4.0    16.6    -      -       -      +
    367D  PRO      4.4     2.2    -      -       -      +
    369D  GLU      3.4    16.6    -      -       -      +
    370D  PRO*     3.0     9.7    +      -       +      +
    372D  ARG*     1.3    79.5    -      -       +      +
    374D  ILE*     1.3    61.6    +      -       -      +
    376D  GLY*     3.5     0.9    +      -       -      -
    377D  HIS*     3.2    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 374 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339D  LEU*     3.6    34.8    -      -       +      -
    342D  ARG*     4.9     8.1    -      -       +      +
    343D  ALA*     4.3    17.3    -      -       -      +
    346D  LEU*     4.1    20.9    -      -       +      -
    370D  PRO      3.2     6.0    +      -       -      +
    371D  TYR*     3.2    17.5    -      -       -      +
    373D  VAL*     1.3    76.6    -      -       -      +
    375D  LEU*     1.3    62.5    +      -       +      +
    377D  HIS*     3.2     5.7    +      -       -      +
    378D  VAL*     3.0    31.6    +      -       -      +
    415D  PRO*     4.9     9.8    -      -       +      +
    418D  LEU*     5.2     6.7    -      -       +      -
    419D  CYS*     3.4    33.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 375 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323D  ILE*     3.5    25.7    -      -       +      +
    326D  LEU*     3.9    32.5    -      -       +      +
    327D  MET*     3.6    28.9    -      -       +      +
    330D  LEU*     4.1    15.9    -      -       +      -
    371D  TYR*     3.1    23.3    +      -       +      +
    374D  ILE*     1.3    76.8    -      -       +      +
    376D  GLY*     1.3    61.3    +      -       -      +
    378D  VAL*     3.4     7.0    +      -       +      +
    379D  ARG*     3.0    22.7    +      -       -      +
    415D  PRO*     5.7     0.4    -      -       +      +
    416D  LEU*     3.9    28.5    -      -       +      -
    419D  CYS*     4.4    13.2    -      -       -      -
    436D  LEU*     5.5     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 376 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327D  MET*     3.8    18.0    -      -       -      +
    372D  ARG      2.9    18.5    +      -       -      -
    373D  VAL*     3.9     2.2    -      -       -      -
    375D  LEU*     1.3    76.7    -      -       -      +
    377D  HIS*     1.3    60.7    +      -       -      +
    379D  ARG*     3.3    11.5    +      -       -      +
    380D  ASP*     3.0    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 377 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342D  ARG*     4.5    10.3    +      -       -      -
    346D  LEU*     3.8    43.0    -      -       +      +
    373D  VAL      3.2     7.2    +      -       -      +
    374D  ILE      3.2    10.4    +      -       -      +
    376D  GLY*     1.3    76.9    -      -       -      +
    378D  VAL*     1.3    67.4    +      -       +      +
    380D  ASP*     3.1    24.7    +      -       +      +
    381D  LYS*     3.1    35.3    +      -       +      +
    406D  PHE*     6.0     1.3    -      +       -      -
    415D  PRO*     5.9     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 378 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323D  ILE*     4.4    10.1    -      -       +      -
    374D  ILE      3.0    17.4    +      -       -      +
    375D  LEU*     3.8    14.1    -      -       +      +
    376D  GLY      3.3     0.4    -      -       -      -
    377D  HIS*     1.3    79.1    -      -       +      +
    379D  ARG*     1.3    62.3    +      -       -      +
    381D  LYS      3.4     1.0    +      -       -      -
    382D  LEU*     3.0    28.1    +      -       +      +
    406D  PHE*     3.6    20.3    -      -       +      -
    412D  PHE*     3.6    32.5    -      -       +      +
    415D  PRO*     3.6    33.7    -      -       +      -
    416D  LEU*     5.0     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 379 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320D  ILE*     4.3     9.4    -      -       +      +
    323D  ILE*     4.3     9.3    -      -       +      +
    324D  GLU*     3.1    42.9    +      -       -      +
    327D  MET*     4.0    24.6    -      -       -      +
    375D  LEU      3.0    13.8    +      -       -      +
    376D  GLY*     3.5    11.9    -      -       -      +
    377D  HIS      3.2     0.2    -      -       -      -
    378D  VAL*     1.3    77.9    -      -       -      +
    380D  ASP*     1.3    82.2    +      -       -      +
    382D  LEU*     3.2    12.1    +      -       -      +
    383D  TYR*     3.0    47.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 380 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    376D  GLY      3.0    20.6    +      -       -      +
    377D  HIS*     3.1    18.8    +      -       +      +
    379D  ARG*     1.3    95.6    +      -       -      +
    381D  LYS*     1.3    62.8    +      -       -      +
    383D  TYR*     3.2    11.0    +      -       -      +
    384D  ASN*     3.1    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 381 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377D  HIS*     3.1    30.7    +      -       +      +
    378D  VAL      4.0     0.9    -      -       -      +
    380D  ASP*     1.3    79.3    -      -       -      +
    382D  LEU*     1.3    52.3    +      -       -      +
    384D  ASN*     2.9     6.5    +      -       -      +
    385D  THR*     2.7    39.5    +      -       -      +
    403D  GLU      3.2    19.7    +      -       -      -
    404D  SER*     3.1    17.0    -      -       -      +
    405D  SER*     2.8    28.9    -      -       -      +
    406D  PHE*     3.6    31.4    -      -       +      +
    411D  GLU*     2.7    29.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 382 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316D  ALA*     4.0    11.8    -      -       +      +
    319D  TYR*     3.8    43.7    -      -       +      -
    320D  ILE*     3.7    17.3    -      -       +      +
    323D  ILE*     4.1    15.9    -      -       +      -
    378D  VAL*     3.0    28.6    +      -       +      +
    379D  ARG*     3.2     6.5    +      -       -      +
    381D  LYS*     1.3    76.4    -      -       -      +
    383D  TYR*     1.3    61.6    +      -       -      +
    385D  THR*     2.3    31.8    +      -       +      +
    386D  ARG*     3.0    10.0    +      -       -      +
    406D  PHE*     4.0    19.3    -      -       +      -
    412D  PHE*     4.3    11.4    -      -       +      -
    448D  LEU*     5.1     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 383 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320D  ILE*     3.9    22.2    -      -       +      +
    324D  GLU*     4.0    10.3    +      -       -      -
    379D  ARG*     3.0    57.0    +      -       +      -
    380D  ASP*     3.2    11.0    +      -       -      +
    382D  LEU*     1.3    74.2    -      -       -      +
    384D  ASN*     1.3    60.0    +      -       -      +
    386D  ARG*     3.3    41.2    +      -       -      +
    387D  GLU*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 384 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380D  ASP*     3.1    15.5    +      -       -      +
    381D  LYS*     2.9     8.7    +      -       -      +
    383D  TYR*     1.3    76.7    -      -       -      +
    385D  THR*     1.3    66.8    +      -       -      +
    387D  GLU*     3.3     3.6    +      -       -      +
    388D  ARG*     3.0    26.7    +      -       -      +
    400D  ILE*     3.9    12.2    -      -       +      +
    404D  SER*     2.8    49.4    +      -       -      +
    405D  SER*     4.1     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 385 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312D  ARG      5.9     0.4    -      -       -      -
    316D  ALA*     3.7    12.3    -      -       -      +
    381D  LYS      2.7    25.5    +      -       -      +
    382D  LEU*     2.3    35.0    +      -       +      +
    384D  ASN*     1.3    73.6    -      -       -      +
    386D  ARG*     1.3    63.8    +      -       -      +
    388D  ARG*     3.5     4.7    +      -       -      +
    389D  ALA*     3.2    21.5    +      -       -      +
    405D  SER*     3.5     8.9    -      -       -      -
    406D  PHE*     3.1    48.5    -      -       +      +
    448D  LEU*     6.0     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 386 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312D  ARG      5.3     0.9    -      -       -      -
    313D  MET*     3.9    25.0    -      -       +      +
    316D  ALA*     3.8    12.3    -      -       +      -
    317D  ASN*     2.9    39.9    +      -       -      +
    320D  ILE*     4.5     6.8    -      -       +      +
    382D  LEU      3.0    11.7    +      -       -      +
    383D  TYR*     3.3    40.3    +      -       -      +
    384D  ASN      3.2     0.2    -      -       -      -
    385D  THR*     1.3    81.6    +      -       -      +
    387D  GLU*     1.3    90.1    +      -       -      +
    389D  ALA*     3.2     8.1    +      -       -      +
    390D  ARG*     2.9    39.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 387 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    383D  TYR*     3.0    22.5    +      -       +      +
    384D  ASN*     4.0     2.5    -      -       -      +
    386D  ARG*     1.3   114.8    +      -       -      +
    388D  ARG*     1.3    57.5    +      -       -      +
    390D  ARG*     3.1    30.3    +      -       -      +
    391D  HIS*     2.8    39.1    +      -       -      +
    400D  ILE*     3.6    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 388 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384D  ASN      3.0    17.7    +      -       -      +
    385D  THR*     3.7     4.9    -      -       -      +
    387D  GLU*     1.3    77.1    -      -       -      +
    389D  ALA*     1.3    57.1    +      -       -      +
    391D  HIS*     3.2     2.8    +      -       -      +
    392D  LEU*     2.9    56.5    +      -       +      +
    398D  SER*     3.4    30.8    +      -       -      +
    400D  ILE*     2.4    43.4    +      -       +      +
    401D  SER*     3.4     1.2    -      -       -      +
    402D  ALA*     3.2    30.1    -      -       -      +
    405D  SER*     4.0    17.5    -      -       -      +
    407D  THR*     6.4     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 389 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309D  LEU*     4.0    29.5    -      -       +      +
    312D  ARG*     4.6    13.0    -      -       +      -
    313D  MET*     3.7    19.4    -      -       +      +
    385D  THR      3.2     9.3    +      -       -      +
    386D  ARG*     3.2     9.4    +      -       -      +
    388D  ARG*     1.3    75.3    -      -       -      +
    390D  ARG*     1.3    66.4    +      -       -      +
    392D  LEU*     3.8     4.4    -      -       -      +
    393D  LEU*     2.9    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 390 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313D  MET*     3.2    38.6    -      -       +      +
    317D  ASN*     5.2     4.8    -      -       -      +
    386D  ARG*     2.9    36.9    +      -       -      +
    387D  GLU*     3.2    44.8    +      -       -      +
    389D  ALA*     1.3    76.1    -      -       -      +
    391D  HIS*     1.3    61.7    +      -       +      +
    393D  LEU*     3.3     6.6    +      -       +      +
    394D  ALA*     3.0    30.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 391 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  GLU*     2.8    41.0    +      -       -      +
    387D  GLU*     2.8    26.2    +      -       -      +
    389D  ALA      3.2     0.2    -      -       -      -
    390D  ARG*     1.3    83.2    -      -       +      +
    392D  LEU*     1.3    60.2    +      -       -      +
    394D  ALA*     3.0     5.4    +      -       +      +
    395D  SER*     2.8    31.8    +      -       -      -
    396D  GLY      3.7     1.6    +      -       -      -
    397D  VAL      3.7     4.3    -      -       -      +
    398D  SER*     3.6    19.7    +      -       -      -
    399D  GLU      4.6     0.4    +      -       -      -
    400D  ILE*     4.1    24.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 392 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305D  ARG*     3.1    20.8    +      -       -      +
    309D  LEU*     3.9    25.1    -      -       +      -
    388D  ARG*     2.9    50.8    +      -       +      +
    389D  ALA*     3.8     5.2    -      -       -      +
    391D  HIS*     1.3    75.2    -      -       -      +
    393D  LEU*     1.3    58.4    +      -       -      +
    396D  GLY      3.0    24.5    +      -       -      +
    397D  VAL*     3.6    29.6    -      -       +      +
    398D  SER*     3.8    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 393 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302D  GLU*     5.3     0.5    -      -       -      +
    305D  ARG*     3.9     8.5    +      -       -      +
    306D  ASP*     3.4    45.2    -      -       +      +
    309D  LEU*     3.8    15.0    -      -       +      +
    310D  LEU*     3.7    29.4    -      -       +      -
    313D  MET*     4.2    16.4    -      -       +      -
    389D  ALA      2.9    18.1    +      -       -      +
    390D  ARG*     3.4     6.1    -      -       +      +
    392D  LEU*     1.3    79.2    -      -       -      +
    394D  ALA*     1.3    60.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 394 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390D  ARG*     3.0    18.4    +      -       +      +
    391D  HIS*     3.9     5.6    -      -       +      +
    393D  LEU*     1.3    79.3    -      -       -      +
    395D  SER*     1.3    66.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 395 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  GLU*     4.5    15.5    +      -       -      +
    391D  HIS*     2.8    12.3    +      -       -      -
    394D  ALA*     1.3    83.0    +      -       -      +
    396D  GLY*     1.3    60.9    +      -       -      +
    397D  VAL*     3.2    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 396 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305D  ARG*     4.3    15.5    +      -       -      +
    392D  LEU*     3.0    30.0    +      -       -      +
    393D  LEU      4.7     0.2    -      -       -      -
    394D  ALA      3.9     0.4    -      -       -      -
    395D  SER*     1.3    75.9    -      -       -      +
    397D  VAL*     1.3    62.3    +      -       -      +
----------------------------------------------------------
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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