Contacts of the helix formed by residues 923 - 946 (chain D) in PDB entry 2O5J


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 GLY 923 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    918D  ALA      3.5     0.4    +      -       -      -
    919D  PHE      3.2    15.5    +      -       -      -
    920D  LEU      4.5     1.4    +      -       -      -
    921D  ARG      3.7     0.6    -      -       -      -
    922D  LEU*     1.3    81.2    -      -       -      +
    924D  MET*     1.3    60.3    +      -       -      +
    925D  GLU*     3.8     3.4    -      -       -      -
    926D  LYS*     3.5     6.2    +      -       -      +
    927D  THR*     2.7    32.4    +      -       -      -
      7E  ASP*     4.7     4.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 924 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    766D  ALA      4.1     1.3    -      -       -      +
    767D  HIS*     2.8    65.3    -      -       +      +
    769D  LEU*     3.6    19.9    -      -       +      +
    919D  PHE*     4.3    19.3    +      -       +      -
    923D  GLY*     1.3    67.0    -      -       -      +
    925D  GLU*     1.3    60.8    +      -       -      +
    927D  THR*     2.8    30.7    +      -       -      -
    928D  ALA      3.1     3.6    +      -       -      -
   1211D  MET*     4.2    23.8    -      -       +      -
      6E  ILE*     4.1     7.9    -      -       -      -
      7E  ASP*     3.3    24.9    +      -       -      +
     10E  PHE*     4.1    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 925 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    766D  ALA      6.0     0.4    -      -       -      -
    923D  GLY*     5.0     1.7    -      -       -      -
    924D  MET*     1.3    81.5    +      -       -      +
    926D  LYS*     1.3    67.9    +      -       -      +
    928D  ALA*     3.1    25.9    +      -       -      +
    929D  ARG*     3.1    33.8    +      -       -      +
      2E  ALA*     4.0    24.8    +      -       +      +
      3E  GLU      4.3     5.6    -      -       -      +
      5E  GLY*     5.1     6.5    -      -       -      +
      6E  ILE*     3.2    24.9    +      -       +      +
      7E  ASP*     2.5    36.7    -      -       -      +
      8E  LYS*     5.8     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 926 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    889D  ALA      5.3     0.9    -      -       -      -
    890D  VAL*     3.6    41.9    -      -       -      +
    891D  GLU*     4.3     9.3    -      -       -      +
    892D  ASP*     4.9    12.7    +      -       -      +
    922D  LEU*     3.8    34.9    -      -       +      +
    923D  GLY      3.7     7.8    -      -       -      +
    924D  MET      3.1     0.8    +      -       -      -
    925D  GLU*     1.3    84.1    -      -       +      +
    927D  THR*     1.3    60.8    +      -       -      +
    929D  ARG*     3.2    46.8    -      -       -      +
    930D  LEU      3.4     4.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 927 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    769D  LEU*     4.7     2.2    -      -       +      -
    915D  VAL*     3.5    40.6    -      -       +      +
    918D  ALA*     3.2     9.4    +      -       +      -
    919D  PHE*     3.2    32.2    -      -       +      +
    922D  LEU*     4.7     4.7    -      -       -      +
    923D  GLY      2.7    19.3    +      -       -      -
    924D  MET      2.8    12.0    +      -       -      -
    926D  LYS*     1.3    76.5    -      -       -      +
    928D  ALA*     1.3    58.1    +      -       -      +
    930D  LEU*     3.0    10.0    +      -       +      +
    931D  LEU*     2.8    30.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 928 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    639D  LEU*     3.6    38.7    -      -       +      +
    766D  ALA*     4.7     9.2    -      -       +      +
    769D  LEU*     4.8     6.4    -      -       +      +
    924D  MET      3.1     2.7    +      -       -      +
    925D  GLU*     3.1    23.1    +      -       +      +
    927D  THR*     1.3    79.2    -      -       -      +
    929D  ARG*     1.3    61.1    +      -       -      +
    931D  LEU*     3.1    19.1    +      -       +      +
    932D  ASP*     3.2    13.2    +      -       -      +
      2E  ALA*     5.1     5.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 929 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    889D  ALA*     4.0    19.1    -      -       +      +
    925D  GLU*     3.1    40.0    +      -       -      +
    926D  LYS*     3.2    46.0    -      -       -      +
    928D  ALA*     1.3    77.6    -      -       +      +
    930D  LEU*     1.3    57.0    +      -       -      +
    932D  ASP*     3.3     5.5    +      -       -      +
    933D  ALA*     2.9    28.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 930 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    886D  VAL*     4.0    27.6    -      -       +      +
    889D  ALA*     3.6    26.9    -      -       +      +
    890D  VAL*     4.7     6.3    -      -       +      -
    899D  LEU*     6.2     0.2    -      -       +      -
    914D  LEU*     4.0    23.8    -      -       +      +
    915D  VAL*     5.0     9.0    -      -       +      +
    918D  ALA*     4.1    23.8    -      -       +      -
    922D  LEU*     5.4     2.5    -      -       +      -
    926D  LYS      3.4     7.2    +      -       -      +
    927D  THR*     3.0    12.1    +      -       +      +
    929D  ARG*     1.3    78.5    -      -       -      +
    931D  LEU*     1.3    64.3    +      -       +      +
    933D  ALA*     3.2     3.0    +      -       +      +
    934D  LEU*     2.9    42.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 931 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    639D  LEU*     3.9    14.6    -      -       +      -
    731D  LEU*     3.3    19.6    -      -       +      +
    769D  LEU*     4.0    12.3    -      -       +      -
    779D  ALA*     3.2    46.0    -      -       +      +
    781D  PRO*     5.6     3.4    -      -       +      +
    915D  VAL*     3.4    31.9    -      -       +      -
    927D  THR*     2.8    20.3    +      -       +      +
    928D  ALA*     3.1    22.9    +      -       -      +
    930D  LEU*     1.3    77.6    -      -       +      +
    932D  ASP*     1.3    62.4    +      -       -      +
    934D  LEU*     3.4     4.7    +      -       -      +
    935D  LYS*     2.9    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 932 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    637D  LEU      3.5     0.2    -      -       -      +
    638D  LYS*     2.9    35.8    -      -       +      +
    639D  LEU*     3.2    37.4    +      -       -      +
    729D  HIS*     3.2    15.7    +      -       -      -
    731D  LEU*     4.0     0.6    -      -       -      +
    928D  ALA      3.2     5.4    +      -       -      +
    929D  ARG*     3.8     7.6    -      -       -      +
    931D  LEU*     1.3    75.2    -      -       -      +
    933D  ALA*     1.3    57.9    +      -       -      +
    935D  LYS*     2.7    38.5    +      -       -      +
    936D  TYR*     2.7    34.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 933 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638D  LYS*     4.8     1.8    -      -       -      +
    885D  ILE*     4.5    11.0    -      -       +      +
    889D  ALA*     3.7    24.7    -      -       +      -
    929D  ARG      2.9    13.9    +      -       -      +
    930D  LEU*     3.3    12.6    -      -       +      +
    932D  ASP*     1.3    78.6    -      -       -      +
    934D  LEU*     1.3    61.0    +      -       -      +
    936D  TYR*     3.3     1.9    +      -       -      +
    937D  TYR*     2.8    39.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 934 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    781D  PRO*     4.4    11.7    -      -       +      -
    785D  ILE*     2.8    10.8    -      -       -      +
    789D  LEU*     3.5    23.0    -      -       +      +
    882D  PHE*     4.3    22.7    -      -       +      -
    885D  ILE*     4.3    18.8    -      -       +      -
    886D  VAL*     4.7     4.0    -      -       +      -
    911D  LEU*     3.8    31.6    -      -       +      -
    914D  LEU*     4.9    12.1    -      -       +      -
    915D  VAL*     5.7     6.3    -      -       +      -
    930D  LEU*     2.9    33.4    +      -       +      +
    931D  LEU*     3.9     4.3    -      -       -      +
    933D  ALA*     1.3    70.6    -      -       -      +
    935D  LYS*     1.3    57.6    +      -       -      +
    937D  TYR*     4.7     0.9    -      -       -      +
    938D  GLY*     2.7    28.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 935 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    635D  PRO      2.9    28.3    +      -       -      +
    636D  GLN*     4.2     4.0    +      -       -      +
    637D  LEU      3.9     3.4    +      -       -      -
    638D  LYS*     3.7    12.9    -      -       -      +
    729D  HIS*     3.6    14.8    -      -       +      +
    730D  PRO*     3.8     7.6    -      -       +      -
    731D  LEU*     4.3    11.0    -      -       +      +
    781D  PRO*     5.8     0.2    -      -       -      +
    785D  ILE*     3.5    12.9    -      -       +      +
    931D  LEU      2.9    15.3    +      -       -      +
    932D  ASP*     2.7    39.2    +      -       -      +
    934D  LEU*     1.3    76.8    -      -       -      +
    936D  TYR*     1.3    84.7    +      -       -      +
    939D  PHE*     3.0    61.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 936 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179B  PHE      5.0     6.9    +      -       -      -
    180B  GLN*     5.0    13.0    -      -       +      +
    680C  ASP*     5.5     7.4    -      -       -      -
    636D  GLN*     6.2     4.0    -      -       +      -
    638D  LYS*     5.2     3.8    -      -       -      +
    932D  ASP      2.7    18.5    +      -       -      +
    933D  ALA*     3.5     4.3    -      -       -      +
    935D  LYS*     1.3    90.0    -      -       -      +
    937D  TYR*     1.3    91.4    +      +       -      +
    939D  PHE*     3.2     9.4    +      -       +      +
    940D  THR*     2.8    49.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 937 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198B  ARG*     5.5     5.2    +      -       -      -
    789D  LEU*     4.5     2.7    -      -       +      -
    881D  LEU*     5.7     2.2    -      -       +      -
    884D  ARG*     5.5    10.8    +      -       -      -
    885D  ILE*     3.6    43.1    -      -       +      -
    888D  GLU*     5.7     5.2    -      -       +      +
    933D  ALA*     2.8    31.8    +      -       +      +
    934D  LEU      4.4     1.1    -      -       -      +
    936D  TYR*     1.3   104.9    -      +       -      +
    938D  GLY*     1.3    65.7    +      -       -      +
    940D  THR*     3.9     7.6    -      -       -      -
    941D  PHE*     2.9    59.2    +      +       +      -
----------------------------------------------------------
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Residues in contact with GLY 938 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    784D  ASP      4.1     0.5    -      -       -      +
    785D  ILE*     3.6    11.0    -      -       -      -
    788D  GLY*     3.3     8.3    +      -       -      -
    789D  LEU*     3.2    30.8    -      -       -      +
    934D  LEU      2.7    19.4    +      -       -      -
    937D  TYR*     1.3    72.4    -      -       -      +
    939D  PHE*     1.3    64.8    +      -       -      +
    942D  SER*     3.2    23.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 939 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    680C  ASP*     3.2    29.3    -      -       +      +
    681C  GLY*     4.3     4.0    -      -       -      -
    684C  PHE*     3.9     6.3    -      +       -      -
    635D  PRO*     4.3    22.7    -      -       +      -
    730D  PRO*     3.5    35.7    -      -       +      -
    784D  ASP*     3.9    12.6    -      -       +      -
    785D  ILE*     3.1    39.5    -      -       +      -
    935D  LYS*     3.0    43.4    +      -       +      -
    936D  TYR*     3.4     8.1    -      +       +      +
    938D  GLY*     1.3    76.3    -      -       -      +
    940D  THR*     1.3    64.9    +      -       -      +
    942D  SER*     2.5    25.3    +      -       -      -
    943D  THR*     3.1     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 940 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    680C  ASP*     5.0     9.9    +      -       -      +
    978C  ARG*     5.8     4.7    -      -       -      +
    936D  TYR*     2.8    39.0    +      -       +      +
    937D  TYR*     3.7     8.3    -      -       -      -
    939D  PHE*     1.3    75.6    -      -       -      +
    941D  PHE*     1.3    71.7    +      -       +      +
    943D  THR*     2.7    33.1    +      -       -      +
    944D  THR*     3.2    11.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 941 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    788D  GLY*     3.7    22.9    -      -       -      +
    789D  LEU*     4.8     4.0    -      -       +      -
    791D  TYR*     3.7    10.6    -      +       +      -
    792D  ILE*     3.7    26.7    -      -       +      -
    860D  LEU*     5.7     5.8    -      -       +      -
    881D  LEU*     3.8    30.1    -      -       +      -
    885D  ILE*     4.0     8.7    -      -       +      -
    937D  TYR*     2.9    53.8    +      +       +      +
    938D  GLY      4.5     0.2    -      -       -      -
    940D  THR*     1.3    84.0    -      -       +      +
    942D  SER*     1.3    52.8    +      -       -      +
    944D  THR*     2.8    10.6    +      -       -      -
    945D  SER*     2.8    37.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 942 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    678C  PRO*     3.1    26.4    -      -       -      +
    679C  PHE      3.7     8.3    +      -       -      -
    680C  ASP      4.2     0.7    +      -       -      -
    784D  ASP*     4.3    12.4    -      -       -      +
    787D  LEU*     5.2     2.5    -      -       -      -
    788D  GLY*     3.9    12.3    -      -       -      -
    938D  GLY      3.2    16.5    +      -       -      -
    939D  PHE*     2.5    24.0    +      -       -      -
    940D  THR      3.0     0.6    +      -       -      -
    941D  PHE*     1.3    74.3    -      -       -      +
    943D  THR*     1.3    67.6    +      -       -      +
    945D  SER*     2.6    22.5    +      -       -      -
    946D  GLY      3.8     0.2    +      -       -      -
    947D  ILE*     3.5     4.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 943 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677C  MET*     5.7     0.5    -      -       -      +
    678C  PRO*     3.0    20.4    -      -       -      +
    679C  PHE*     3.0    40.8    -      -       +      -
    680C  ASP*     3.2    14.1    +      -       -      +
    976C  ASP*     5.5     0.7    +      -       -      -
    978C  ARG*     4.4    12.4    +      -       -      -
    983C  ILE*     4.2    11.7    -      -       -      +
    987C  ILE*     5.3     0.9    -      -       -      +
    939D  PHE      3.1    16.2    -      -       -      +
    940D  THR*     2.7    11.0    +      -       -      +
    942D  SER*     1.3    80.6    +      -       -      +
    944D  THR*     1.3    77.9    +      -       -      +
    946D  GLY*     3.3    13.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 944 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    976C  ASP*     5.2     9.4    -      -       -      +
    978C  ARG*     5.8     2.0    -      -       -      +
    983C  ILE*     4.1    11.3    -      -       -      +
    984C  GLU*     4.0    28.3    +      -       -      +
    791D  TYR*     4.5     5.7    +      -       -      -
    940D  THR*     3.9     8.7    -      -       +      +
    941D  PHE*     2.8    33.1    +      -       -      -
    943D  THR*     1.3    83.3    +      -       -      +
    945D  SER*     1.3    61.2    +      -       -      +
    946D  GLY*     2.9     8.0    +      -       -      -
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Residues in contact with SER 945 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    946C  ARG*     5.8     0.7    +      -       -      -
    984C  GLU      3.4    12.2    -      -       -      +
    985C  GLY*     5.3     0.2    -      -       -      -
    787D  LEU      5.4     0.7    +      -       -      -
    791D  TYR*     3.4    49.2    -      -       -      -
    941D  PHE      2.8    18.8    +      -       -      -
    942D  SER*     2.6    25.2    +      -       -      -
    944D  THR*     1.3    72.5    -      -       -      +
    946D  GLY*     1.3    61.1    +      -       -      +
    947D  ILE*     3.0    25.2    +      -       -      +
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Residues in contact with GLY 946 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    678C  PRO*     5.0     2.2    -      -       -      -
    983C  ILE*     3.7    25.8    -      -       -      -
    984C  GLU      4.2     4.0    -      -       -      +
    985C  GLY*     4.7     3.6    -      -       -      +
    986C  PRO      4.3     6.1    -      -       -      +
    987C  ILE*     4.0    11.5    -      -       -      +
    942D  SER      3.8     0.8    +      -       -      -
    943D  THR      3.3     8.2    +      -       -      -
    944D  THR      2.9     4.2    +      -       -      -
    945D  SER*     1.3    80.2    +      -       -      +
    947D  ILE*     1.3    63.2    +      -       -      +
    948D  THR*     3.5    11.5    +      -       -      +
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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
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  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) +   -    +    +   +   +    +    -
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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