Contacts of the helix formed by residues 916 - 942 (chain A) in PDB entry 4K6J


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 GLN 916 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    912A  PRO*     3.7    10.4    -      -       -      +
    913A  LEU*     3.1    40.2    +      -       +      +
    915A  HIS*     1.3    88.5    -      -       +      +
    917A  ASN*     1.3    63.8    +      -       -      +
    918A  VAL*     4.1    17.8    -      -       +      +
    919A  THR*     3.3    13.3    +      -       -      +
    920A  ASN*     3.0    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 917 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    841A  GLU*     5.2     0.7    -      -       -      -
    915A  HIS      3.8     1.6    +      -       -      +
    916A  GLN*     1.3    72.4    -      -       -      +
    918A  VAL*     1.3    64.7    +      -       +      +
    920A  ASN*     3.4     4.3    +      -       -      +
    921A  HIS*     3.0    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 918 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    841A  GLU*     3.4    38.8    -      -       +      +
    898A  TYR*     4.4    13.7    -      -       +      -
    912A  PRO*     4.6     9.9    -      -       +      -
    916A  GLN*     3.2    16.4    -      -       +      +
    917A  ASN*     1.3    78.7    -      -       +      +
    919A  THR*     1.3    59.8    +      -       -      +
    921A  HIS*     3.3     0.7    +      -       -      +
    922A  VAL*     2.9    38.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 919 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    898A  TYR*     3.9    17.0    -      -       -      +
    899A  ASN      3.2    27.6    -      -       -      +
    900A  ARG*     3.6    11.3    -      -       +      -
    912A  PRO*     2.8    26.4    -      -       +      +
    913A  LEU      2.6    28.1    +      -       -      +
    914A  PRO*     4.2     2.0    -      -       +      -
    916A  GLN*     3.3    10.7    +      -       -      +
    917A  ASN      3.2     0.4    -      -       -      -
    918A  VAL*     1.3    78.1    -      -       -      +
    920A  ASN*     1.3    60.0    +      -       -      +
    921A  HIS      3.2     0.2    -      -       -      -
    923A  GLY*     3.0    27.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 920 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    900A  ARG*     4.3    20.3    +      -       -      +
    914A  PRO      3.0    27.2    +      -       -      +
    915A  HIS*     3.8     8.3    +      -       -      +
    916A  GLN      3.0    24.3    +      -       -      +
    917A  ASN*     3.8     4.3    -      -       -      +
    919A  THR*     1.3    75.8    -      -       -      +
    921A  HIS*     1.3    58.4    +      -       -      +
    924A  LYS*     3.2    28.9    -      -       -      +
    973A  PRO*     6.1     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 921 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    841A  GLU*     3.0    24.8    +      -       +      +
    842A  GLU*     5.9     3.8    -      -       +      -
    845A  VAL*     3.5    41.0    -      -       +      +
    917A  ASN      3.0    19.8    +      -       -      +
    918A  VAL      3.6     2.9    -      -       -      +
    920A  ASN*     1.3    80.7    -      -       -      +
    922A  VAL*     1.3    62.5    +      -       -      +
    924A  LYS*     4.2     2.1    -      -       -      +
    925A  ALA*     3.3    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 922 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    841A  GLU*     3.9    24.7    -      -       +      -
    844A  LEU*     3.6    28.5    -      -       +      -
    845A  VAL*     3.8    24.2    -      -       +      -
    848A  LEU*     4.9     0.7    -      -       +      -
    898A  TYR*     3.7    34.5    -      -       +      -
    918A  VAL*     2.9    20.9    +      -       +      +
    921A  HIS*     1.3    76.6    -      -       -      +
    923A  GLY*     1.3    60.2    +      -       -      +
    925A  ALA*     2.8     5.2    +      -       -      +
    926A  VAL*     2.8    38.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 923 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    895A  ILE*     3.8     4.4    -      -       -      +
    898A  TYR*     3.9    16.2    -      -       -      +
    900A  ARG*     3.1    24.2    +      -       -      -
    919A  THR      3.0    17.7    +      -       -      -
    922A  VAL*     1.3    77.0    -      -       -      +
    924A  LYS*     1.3    56.7    +      -       -      +
    926A  VAL*     3.3     7.7    +      -       -      +
    927A  GLU*     3.0    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 924 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    900A  ARG*     3.6    25.0    -      -       -      +
    920A  ASN      3.2    23.9    +      -       -      +
    921A  HIS*     4.3     2.9    -      -       -      +
    922A  VAL      3.2     0.4    -      -       -      -
    923A  GLY*     1.3    74.5    -      -       -      +
    925A  ALA*     1.3    57.7    +      -       -      +
    927A  GLU*     3.9     2.3    -      -       -      +
    928A  ASP*     3.0    58.5    +      -       -      +
    931A  ARG*     5.9     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 925 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    845A  VAL*     4.4    19.3    -      -       +      +
    848A  LEU*     4.0    20.2    -      -       +      +
    849A  TRP*     5.6     3.1    -      -       +      +
    852A  GLU*     4.7     3.1    -      -       -      +
    921A  HIS      3.3    15.4    +      -       -      +
    922A  VAL*     2.8    14.3    +      -       -      +
    924A  LYS*     1.3    77.8    -      -       -      +
    926A  VAL*     1.3    62.4    +      -       -      +
    928A  ASP*     4.0     5.7    -      -       -      +
    929A  CYS*     3.2    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 926 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    848A  LEU*     3.5    24.7    -      -       +      -
    891A  CYS*     3.6    40.2    -      -       +      +
    894A  LEU*     4.1    19.7    -      -       +      +
    895A  ILE*     4.0    18.6    -      -       +      +
    898A  TYR*     5.1     0.4    -      -       +      -
    922A  VAL*     2.8    29.0    +      -       +      +
    923A  GLY*     3.7     7.9    -      -       -      +
    925A  ALA*     1.3    75.4    -      -       -      +
    927A  GLU*     1.3    66.8    +      -       -      +
    929A  CYS*     3.3     3.5    +      -       -      +
    930A  MET*     3.0    23.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 927 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    895A  ILE*     4.3     3.3    -      -       -      +
    900A  ARG*     3.2    29.1    +      -       -      +
    923A  GLY      3.0    15.9    +      -       -      +
    924A  LYS*     3.9     5.0    -      -       -      +
    926A  VAL*     1.3    79.0    -      -       -      +
    928A  ASP*     1.3    67.1    +      -       -      +
    930A  MET*     3.0    12.2    +      -       +      +
    931A  ARG*     3.0    39.3    +      -       -      +
    972A  LEU*     3.8    18.1    -      -       +      +
    973A  PRO*     4.5     0.2    -      -       -      +
    976A  GLN*     2.9    47.9    +      -       -      +
    980A  ILE*     4.5    14.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 928 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    852A  GLU*     3.4    30.8    -      -       -      +
    924A  LYS*     3.0    55.3    +      -       -      +
    925A  ALA*     4.0     4.0    -      -       -      +
    926A  VAL      3.3     0.2    -      -       -      -
    927A  GLU*     1.3    81.8    -      -       -      +
    929A  CYS*     1.3    60.9    +      -       -      +
    931A  ARG*     2.9    35.3    +      -       -      +
    932A  ALA*     3.2    21.7    +      -       -      +
    976A  GLN*     5.8     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 929 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    835A  LEU*     5.7     1.3    -      -       -      -
    848A  LEU*     3.8    43.3    -      -       +      +
    851A  ALA*     4.1    16.8    -      -       -      -
    852A  GLU*     4.2    12.3    +      -       +      -
    855A  LEU*     4.6     1.3    -      -       -      -
    887A  ALA*     5.4     2.7    -      -       -      -
    891A  CYS*     4.2     3.1    -      -       -      -
    925A  ALA      3.2    18.2    +      -       -      +
    926A  VAL      3.6     4.3    -      -       -      +
    927A  GLU      3.2     0.6    -      -       -      -
    928A  ASP*     1.3    74.5    -      -       -      +
    930A  MET*     1.3    60.9    +      -       -      +
    932A  ALA*     3.1     3.6    +      -       -      +
    933A  ILE*     2.8    50.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 930 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    888A  LEU*     4.0    11.7    -      -       +      -
    891A  CYS*     3.5    37.7    -      -       +      +
    892A  GLU      4.7     1.1    -      -       -      -
    895A  ILE*     5.2     3.1    -      -       -      -
    926A  VAL*     3.0    12.5    +      -       -      +
    927A  GLU*     3.0    13.7    +      -       +      +
    929A  CYS*     1.3    76.2    -      -       -      +
    931A  ARG*     1.3    63.3    +      -       -      +
    933A  ILE*     3.1     8.6    +      -       -      +
    934A  ILE*     3.0    34.8    +      -       +      +
    964A  CYS*     4.0    17.7    -      -       -      -
    968A  VAL*     3.9    34.1    -      -       +      -
    972A  LEU*     5.6     0.9    -      -       +      -
    980A  ILE*     3.7    32.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 931 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    852A  GLU*     5.6     1.0    +      -       -      -
    924A  LYS*     5.9     0.4    -      -       -      +
    927A  GLU*     3.0    34.5    +      -       -      +
    928A  ASP*     2.9    36.3    +      -       -      +
    930A  MET*     1.3    76.4    -      -       -      +
    932A  ALA*     1.3    56.2    +      -       -      +
    934A  ILE*     4.1     1.7    -      -       -      +
    935A  GLY*     3.1    23.2    +      -       -      -
    976A  GLN*     4.9     6.5    -      -       -      +
    979A  ASP*     3.2    27.8    +      -       -      +
    980A  ILE*     3.7    20.9    -      -       +      -
    983A  LEU*     4.3    17.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 932 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    852A  GLU*     3.8    20.2    -      -       +      -
    855A  LEU*     3.9    20.3    -      -       +      +
    856A  ARG*     4.3    14.1    -      -       +      +
    859A  GLU*     5.3     1.4    -      -       -      +
    928A  ASP      3.2    13.2    +      -       -      +
    929A  CYS      3.1     8.4    +      -       -      +
    930A  MET      3.1     0.8    -      -       -      -
    931A  ARG*     1.3    75.9    -      -       -      +
    933A  ILE*     1.3    65.1    +      -       -      +
    935A  GLY*     3.3     1.6    +      -       -      -
    936A  VAL*     3.1    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 933 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    855A  LEU*     3.5    24.9    -      -       +      -
    884A  SER*     3.4    32.9    +      -       -      +
    887A  ALA*     3.6    29.6    -      -       +      -
    888A  LEU*     3.8    26.0    -      -       +      +
    891A  CYS*     4.2     3.6    -      -       -      -
    929A  CYS*     2.8    35.3    +      -       -      +
    930A  MET*     3.5     9.4    -      -       -      +
    932A  ALA*     1.3    75.5    -      -       -      +
    934A  ILE*     1.3    62.2    +      -       -      +
    936A  VAL*     3.2     5.9    +      -       -      +
    937A  LEU*     3.0    29.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 934 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    888A  LEU*     3.8    28.3    -      -       +      -
    930A  MET*     3.0    25.8    +      -       +      +
    931A  ARG*     4.3     3.1    -      -       -      +
    933A  ILE*     1.3    72.3    -      -       -      +
    935A  GLY*     1.3    60.9    +      -       -      +
    937A  LEU*     3.7     6.9    -      -       -      +
    938A  LEU*     2.8    38.1    +      -       +      +
    964A  CYS*     4.4    17.9    -      -       +      -
    980A  ILE*     5.2     4.3    -      -       +      +
    983A  LEU*     3.8    47.8    -      -       +      +
    984A  GLY*     4.7     6.5    -      -       -      +
    987A  LEU*     4.3    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 935 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    859A  GLU*     4.1    14.6    -      -       -      +
    931A  ARG      3.1    18.6    +      -       -      -
    932A  ALA*     3.3     2.7    +      -       -      -
    933A  ILE      3.2     0.6    -      -       -      -
    934A  ILE*     1.3    77.0    -      -       -      +
    936A  VAL*     1.3    60.6    +      -       -      +
    938A  LEU*     3.4    13.3    +      -       -      +
    939A  ASN*     3.2    26.0    +      -       -      +
    983A  LEU*     5.5     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 936 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    855A  LEU*     3.2    43.7    -      -       +      +
    858A  LEU*     4.3     6.3    -      -       +      +
    859A  GLU*     3.9    14.8    -      -       +      +
    862A  THR*     5.6     1.3    -      -       +      +
    872A  LEU*     5.9     0.4    -      -       +      -
    880A  LEU*     3.8    33.2    -      -       +      -
    884A  SER*     4.8     4.0    -      -       -      +
    932A  ALA      3.1    12.7    +      -       -      +
    933A  ILE      3.6     6.5    -      -       -      +
    935A  GLY*     1.3    73.3    -      -       -      +
    937A  LEU*     1.3    66.8    +      -       +      +
    939A  ASN*     3.1     8.7    +      -       -      +
    940A  LEU*     3.0    32.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 937 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    881A  ILE*     4.3    17.3    -      -       +      +
    884A  SER*     4.0    22.9    -      -       -      +
    888A  LEU*     4.8     2.2    -      -       +      -
    933A  ILE*     3.0    34.7    +      -       +      +
    934A  ILE*     3.7     6.1    -      -       -      +
    936A  VAL*     1.3    78.2    -      -       +      +
    938A  LEU*     1.3    57.1    +      -       -      +
    940A  LEU*     3.2     6.1    +      -       +      +
    941A  THR*     2.7    38.4    +      -       -      +
    951A  THR*     4.2    23.3    -      -       +      +
    957A  LEU*     3.9    28.5    -      -       +      -
    987A  LEU*     3.8    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 938 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    934A  ILE*     2.8    33.1    +      -       +      +
    935A  GLY*     3.5    10.8    -      -       -      +
    937A  LEU*     1.3    73.6    -      -       -      +
    939A  ASN*     1.3    57.6    +      -       -      +
    941A  THR*     3.8     3.1    -      -       -      -
    942A  ASN*     2.8    39.1    +      -       -      +
    983A  LEU*     3.7    32.8    -      -       +      +
    986A  GLY*     3.7     7.6    -      -       -      -
    987A  LEU*     3.4    39.0    -      -       +      +
    990A  ASN*     3.3    11.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 939 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    859A  GLU*     2.9    47.8    +      -       -      +
    862A  THR*     2.9    24.6    +      -       +      +
    863A  VAL*     4.0    11.6    -      -       -      +
    869A  GLN*     3.3    27.3    +      -       -      +
    935A  GLY      3.2     9.7    +      -       -      +
    936A  VAL*     3.1     9.9    +      -       +      +
    938A  LEU*     1.3    80.5    -      -       -      +
    940A  LEU*     1.3    61.9    +      -       -      +
    941A  THR      3.7     0.2    +      -       -      -
    942A  ASN*     4.2     9.5    +      -       -      +
    943A  ASP      5.2     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 940 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    862A  THR*     4.2    13.5    -      -       +      -
    869A  GLN*     3.7    37.9    -      -       +      +
    872A  LEU*     4.3     9.2    -      -       +      +
    873A  ILE*     3.7    10.9    -      -       +      +
    880A  LEU*     4.0    23.3    -      -       +      -
    881A  ILE*     3.7    32.5    -      -       +      -
    936A  VAL*     3.0    26.8    +      -       +      +
    937A  LEU*     3.8     8.1    -      -       +      +
    938A  LEU      3.2     0.2    -      -       -      -
    939A  ASN*     1.3    78.5    -      -       -      +
    941A  THR*     1.3    63.6    +      -       +      +
    942A  ASN      3.7     0.2    -      -       -      -
    944A  ASN*     3.4    25.7    -      -       -      +
    947A  GLY*     3.5     8.8    -      -       -      -
    951A  THR*     5.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 941 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    937A  LEU      2.7    22.3    +      -       -      +
    940A  LEU*     1.3    80.6    -      -       +      +
    942A  ASN*     1.3    67.9    +      -       -      +
    943A  ASP      3.5     1.5    +      -       -      -
    944A  ASN      3.8    13.1    +      -       -      +
    945A  GLU*     4.5     3.1    -      -       -      +
    947A  GLY      3.6    10.3    -      -       -      +
    948A  SER*     3.7    15.3    -      -       -      -
    951A  THR*     3.4    31.9    -      -       +      +
    987A  LEU*     3.8     6.7    -      -       +      +
    990A  ASN*     3.2    38.6    +      -       -      +
    991A  LEU*     4.2     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 942 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    869A  GLN*     6.0     1.9    -      -       -      +
    938A  LEU      2.8    18.1    +      -       -      +
    939A  ASN*     4.2     9.5    +      -       -      +
    940A  LEU      3.7     1.0    -      -       -      -
    941A  THR*     1.3    81.3    -      -       -      +
    943A  ASP*     1.3    79.2    +      -       -      +
    945A  GLU*     4.6     1.9    -      -       -      +
    990A  ASN*     3.2    18.0    +      -       -      +
    993A  GLU*     4.0    16.6    -      -       -      +
----------------------------------------------------------
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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