Contacts of the helix formed by residues 923 - 946 (chain J) in PDB entry 4XLN


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 J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    918J  ALA      3.8     0.2    +      -       -      -
    919J  PHE      4.0     5.6    -      -       -      -
    922J  LEU*     1.3    79.4    -      -       -      +
    924J  MET*     1.3    63.0    +      -       -      -
    925J  GLU      3.4     1.8    -      -       -      -
    926J  LYS*     3.0    13.4    +      -       -      +
    927J  THR*     2.7    29.7    +      -       -      -
      7K  ASP*     3.8    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 924 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    766J  ALA      3.8    13.7    -      -       -      +
    767J  HIS*     3.5    51.8    -      -       +      +
    769J  LEU*     3.8     3.6    -      -       +      +
    919J  PHE*     3.8    37.9    -      -       +      -
    923J  GLY*     1.3    70.5    -      -       -      -
    925J  GLU*     1.3    58.4    +      -       -      +
    927J  THR*     3.2     8.0    +      -       -      -
    928J  ALA*     2.9    27.5    +      -       +      +
   1210J  SER      5.6     0.2    -      -       -      +
   1211J  MET*     4.5     9.0    -      -       +      +
      6K  ILE*     4.4     7.4    -      -       +      -
      7K  ASP*     2.9    25.1    +      -       -      +
     10K  PHE*     4.1    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 925 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638J  LYS*     5.1     0.2    +      -       -      -
    924J  MET*     1.3    74.8    -      -       -      +
    926J  LYS*     1.3    66.2    +      -       +      +
    928J  ALA*     3.0     9.5    +      -       -      +
    929J  ARG*     3.0    42.8    +      -       -      +
      2K  ALA*     4.8    11.7    -      -       +      -
      3K  GLU      4.4     1.1    -      -       -      +
      4K  PRO*     3.7    11.6    -      -       -      +
      5K  GLY*     2.7    35.3    +      -       -      -
      6K  ILE*     3.0    25.4    +      -       +      +
      7K  ASP*     3.4    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 926 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    889J  ALA      5.0     3.0    -      -       -      +
    890J  VAL*     4.0    34.6    +      -       +      +
    922J  LEU*     4.3    15.7    -      -       +      -
    923J  GLY*     3.0    22.2    +      -       -      +
    925J  GLU*     1.3    78.0    -      -       +      +
    927J  THR*     1.3    57.4    +      -       -      +
    929J  ARG*     3.5    32.0    +      -       -      +
    930J  LEU*     2.9    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 927 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    769J  LEU*     4.2     6.3    -      -       +      -
    915J  VAL*     3.7    23.8    -      -       +      +
    918J  ALA*     4.0    11.0    +      -       +      -
    919J  PHE*     3.4    44.7    +      -       +      +
    922J  LEU*     4.9     0.6    -      -       -      +
    923J  GLY      2.7    22.7    +      -       -      -
    924J  MET*     3.5     6.2    -      -       -      -
    926J  LYS*     1.3    74.4    -      -       -      +
    928J  ALA*     1.3    60.6    +      -       -      +
    930J  LEU*     3.5     8.7    -      -       +      +
    931J  LEU*     2.9    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 928 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638J  LYS*     3.9    14.4    -      -       -      +
    639J  LEU*     3.5    28.6    -      -       +      +
    766J  ALA*     4.9     9.9    -      -       +      +
    769J  LEU*     4.6     1.8    -      -       +      +
    924J  MET      2.9    12.6    +      -       -      +
    925J  GLU*     3.2    13.5    -      -       -      +
    927J  THR*     1.3    75.1    -      -       -      +
    929J  ARG*     1.3    65.7    +      -       -      +
    931J  LEU*     3.0    10.6    +      -       -      +
    932J  ASP*     3.0    24.4    +      -       -      +
      2K  ALA*     5.0     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 929 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638J  LYS*     4.0    24.9    -      -       -      +
    889J  ALA*     4.3    20.9    +      -       -      +
    890J  VAL      4.8     3.0    +      -       -      -
    891J  GLY*     5.9     1.0    -      -       -      -
    925J  GLU*     3.0    30.6    +      -       -      +
    926J  LYS*     4.0    40.8    -      -       -      +
    928J  ALA*     1.3    76.2    -      -       -      +
    930J  LEU*     1.3    57.1    +      -       -      +
    932J  ASP*     3.4     3.3    +      -       -      +
    933J  ALA*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 930 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    885J  ILE*     6.5     0.2    -      -       +      -
    886J  VAL*     3.8    29.4    -      -       +      +
    889J  ALA*     4.1    21.7    +      -       +      +
    890J  VAL*     4.4    13.0    -      -       +      -
    914J  LEU*     4.6    11.7    -      -       +      +
    915J  VAL*     5.1     5.4    -      -       +      -
    918J  ALA*     3.6    31.0    -      -       +      -
    926J  LYS      2.9    19.0    +      -       -      +
    927J  THR*     3.5    12.1    -      -       +      +
    929J  ARG*     1.3    77.6    -      -       -      +
    931J  LEU*     1.3    58.1    +      -       +      +
    933J  ALA*     3.2     3.0    +      -       +      +
    934J  LEU*     2.9    54.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 931 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    639J  LEU*     5.0     5.4    -      -       +      -
    731J  LEU*     3.9    24.9    -      -       +      +
    769J  LEU*     4.1    28.7    -      -       +      -
    779J  ALA*     3.5    28.7    -      -       +      +
    780J  LYS*     4.2     6.1    -      -       -      -
    781J  PRO*     4.3     5.4    -      -       +      -
    915J  VAL*     4.0    35.4    -      -       +      -
    927J  THR*     2.9    26.1    +      -       +      +
    928J  ALA*     3.0     9.8    +      -       -      +
    930J  LEU*     1.3    76.1    -      -       +      +
    932J  ASP*     1.3    58.4    +      -       -      +
    934J  LEU*     3.3    11.0    +      -       +      +
    935J  LYS*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 932 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    637J  LEU      3.1     5.4    -      -       -      +
    638J  LYS*     3.2    27.5    -      -       +      +
    639J  LEU*     2.9    32.2    +      -       -      +
    729J  HIS*     3.0    16.5    +      -       -      -
    731J  LEU*     5.1     0.8    -      -       -      +
    928J  ALA      3.0    11.4    +      -       -      +
    929J  ARG*     4.0     4.7    -      -       -      +
    930J  LEU      3.3     0.2    -      -       -      -
    931J  LEU*     1.3    73.3    -      -       -      +
    933J  ALA*     1.3    60.6    +      -       -      +
    935J  LYS*     3.0    37.3    +      -       -      +
    936J  TYR*     2.9    29.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 933 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    885J  ILE*     4.9     9.6    -      -       +      -
    889J  ALA*     3.7    23.8    -      -       +      -
    929J  ARG      2.9    18.6    +      -       -      +
    930J  LEU*     3.4     4.7    -      -       +      +
    932J  ASP*     1.3    74.9    -      -       -      +
    934J  LEU*     1.3    65.6    +      -       +      +
    936J  TYR*     3.3     4.9    +      -       -      +
    937J  TYR*     2.9    35.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 934 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    781J  PRO*     4.6    19.7    -      -       +      -
    785J  ILE*     3.4     8.1    -      -       -      +
    789J  LEU*     4.0    27.2    -      -       +      +
    882J  PHE*     4.5    16.2    -      -       +      -
    885J  ILE*     5.2     8.5    -      -       +      +
    886J  VAL*     4.5    11.0    -      -       +      -
    911J  LEU*     5.2     4.7    -      -       +      -
    914J  LEU*     5.8     4.5    -      -       +      -
    915J  VAL*     4.7     8.5    -      -       +      -
    930J  LEU*     2.9    47.9    +      -       +      +
    931J  LEU*     3.5    18.6    -      -       +      +
    933J  ALA*     1.3    76.0    -      -       +      +
    935J  LYS*     1.3    58.0    +      -       -      +
    937J  TYR*     5.1     1.6    -      -       -      -
    938J  GLY*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 935 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    635J  PRO      2.6    27.2    +      -       -      +
    636J  GLN      4.3     2.0    +      -       -      -
    637J  LEU      2.9    22.2    +      -       -      -
    729J  HIS*     3.4    22.4    -      -       +      +
    730J  PRO*     3.9    14.6    -      -       +      -
    731J  LEU*     4.7     5.8    -      -       +      -
    785J  ILE*     3.7    22.6    -      -       +      +
    931J  LEU      2.9    13.2    +      -       -      +
    932J  ASP*     3.0    20.7    +      -       -      +
    934J  LEU*     1.3    76.9    -      -       -      +
    936J  TYR*     1.3    76.5    +      -       -      +
    939J  PHE*     2.9    55.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 936 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179H  PHE      4.9     3.6    +      -       -      -
    180H  GLN*     3.6    40.5    +      -       +      +
    680I  ASP*     5.5     7.0    -      -       -      -
    635J  PRO      5.4     6.3    -      -       -      -
    932J  ASP      2.9    17.0    +      -       -      +
    933J  ALA*     3.8     4.3    -      -       -      +
    935J  LYS*     1.3    88.8    -      -       -      +
    937J  TYR*     1.3    98.7    +      +       -      +
    939J  PHE*     3.3     4.9    -      -       +      +
    940J  THR*     2.9    41.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 937 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176H  ARG*     3.7    24.7    +      -       -      -
    178H  ALA*     5.2     3.5    -      -       -      +
    198H  ARG*     4.1    17.8    +      -       -      -
    789J  LEU*     5.2     1.1    -      -       +      -
    881J  LEU*     5.1     7.2    -      -       +      -
    885J  ILE*     3.5    51.8    -      -       +      -
    933J  ALA*     2.9    23.7    +      -       +      +
    934J  LEU*     4.6     1.1    -      -       -      +
    936J  TYR*     1.3   100.5    -      +       -      +
    938J  GLY*     1.3    58.3    +      -       -      +
    940J  THR*     3.2     7.6    +      -       -      -
    941J  LEU*     2.9    42.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 938 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    785J  ILE*     4.3     7.9    -      -       -      -
    788J  GLY*     3.8     1.6    -      -       -      -
    789J  LEU*     3.7    27.4    -      -       -      +
    934J  LEU      2.9    19.6    +      -       -      -
    937J  TYR*     1.3    76.9    -      -       -      +
    939J  PHE*     1.3    51.8    +      -       -      +
    941J  LEU*     3.3     4.4    +      -       -      +
    942J  SER*     2.7    38.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 939 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    678I  PRO*     5.6     0.2    -      -       -      +
    680I  ASP*     4.2     7.5    -      -       -      +
    681I  GLY*     3.5    42.3    +      -       -      +
    684I  PHE*     4.2    10.1    -      +       -      -
    635J  PRO*     4.6     8.7    -      -       +      -
    730J  PRO*     3.9    28.3    -      -       +      -
    784J  ASP*     3.4    30.7    -      -       +      -
    785J  ILE*     3.5    22.6    -      -       +      +
    935J  LYS*     2.9    45.6    +      -       +      +
    936J  TYR*     3.3     5.6    -      -       +      +
    938J  GLY*     1.3    73.7    -      -       -      +
    940J  THR*     1.3    58.8    +      -       -      +
    942J  SER*     3.1     8.1    +      -       -      -
    943J  THR*     2.8    30.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 940 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    680I  ASP*     4.1    18.2    +      -       -      +
    978I  ARG*     4.7    10.5    -      -       -      +
    936J  TYR*     2.9    36.4    +      -       +      +
    937J  TYR*     3.7     8.2    -      -       -      -
    939J  PHE*     1.3    77.0    -      -       -      +
    941J  LEU*     1.3    58.7    +      -       -      +
    943J  THR*     3.2     6.8    +      -       -      -
    944J  THR*     2.9    42.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 941 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    788J  GLY*     4.1     7.6    -      -       -      +
    789J  LEU*     3.8    19.1    -      -       +      -
    791J  TYR*     4.4     2.9    -      -       -      -
    792J  ILE*     3.6    53.4    -      -       +      -
    860J  LEU*     5.4     4.0    -      -       +      -
    881J  LEU*     4.5    13.9    -      -       +      -
    885J  ILE*     4.7     9.0    -      -       +      -
    937J  TYR*     2.9    32.7    +      -       +      +
    938J  GLY      3.5     4.0    -      -       -      +
    940J  THR*     1.3    75.2    -      -       -      +
    942J  SER*     1.3    60.0    +      -       -      +
    944J  THR*     2.9    11.6    +      -       +      +
    945J  SER*     2.9    30.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 942 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    678I  PRO*     3.9    31.6    -      -       -      +
    784J  ASP*     2.7    33.7    +      -       -      -
    787J  LEU*     4.9     4.3    -      -       -      -
    788J  GLY*     3.0    12.4    +      -       -      -
    938J  GLY      2.7    20.5    +      -       -      -
    939J  PHE*     3.3     9.1    -      -       -      -
    941J  LEU*     1.3    75.6    -      -       -      +
    943J  THR*     1.3    60.6    +      -       -      +
    945J  SER*     2.4    23.4    +      -       -      -
    946J  GLY      3.6     2.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 943 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677I  MET*     4.7     0.3    -      -       -      +
    678I  PRO      3.3    13.8    +      -       -      +
    679I  PHE*     3.5    31.4    -      -       +      -
    680I  ASP*     2.7    25.3    +      -       -      +
    978I  ARG*     3.6    19.7    -      -       -      +
    983I  PHE*     3.4    22.2    -      -       +      -
    939J  PHE      2.8    17.5    +      -       -      -
    940J  THR*     3.3    11.5    -      -       -      -
    942J  SER*     1.3    75.5    -      -       -      +
    944J  THR*     1.3    66.0    +      -       +      +
    946J  GLY*     3.2    11.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 944 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    978I  ARG*     5.7     3.1    -      -       -      +
    983I  PHE*     4.0    10.0    -      -       -      +
    984I  GLU*     3.2    42.4    +      -       -      +
    791J  TYR*     5.2     1.0    -      -       -      -
    792J  ILE*     5.8     0.3    -      -       -      +
    940J  THR*     2.9    26.8    +      -       +      +
    941J  LEU*     2.9    26.1    +      -       +      +
    943J  THR*     1.3    75.4    -      -       +      +
    945J  SER*     1.3    64.5    +      -       -      +
    946J  GLY      3.3     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 945 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    984I  GLU*     4.1     1.6    -      -       -      +
    985I  GLY*     3.5    19.2    +      -       -      -
    787J  LEU*     5.7     0.2    -      -       -      +
    791J  TYR*     3.5    45.1    +      -       -      -
    941J  LEU      2.9    13.3    +      -       -      -
    942J  SER*     2.4    30.4    +      -       -      -
    944J  THR*     1.3    79.2    +      -       -      +
    946J  GLY*     1.3    62.6    +      -       -      +
    947J  ILE*     3.3    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 946 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677I  MET*     4.6     7.0    -      -       -      -
    983I  PHE*     4.4     5.6    -      -       -      -
    985I  GLY*     4.0     3.0    -      -       -      +
    986I  PRO      3.2    22.7    -      -       -      +
    987I  ILE*     3.7    24.9    -      -       -      +
    942J  SER      3.6     1.5    +      -       -      -
    943J  THR      3.2    11.6    +      -       -      -
    944J  THR      3.2     4.1    -      -       -      -
    945J  SER*     1.3    80.7    +      -       -      +
    947J  ILE*     1.3    65.8    +      -       -      +
    948J  THR      3.3     0.7    +      -       -      -
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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