Contacts of the helix formed by residues 966 - 996 (chain A) in PDB entry 2KNC


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 ILE 966 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    963A  ALA      5.6     0.2    -      -       -      +
    964A  ILE*     2.9    12.3    +      -       +      +
    965A  PRO*     1.3    69.2    -      -       -      +
    967A  TRP*     1.3    55.2    +      -       -      +
    969A  VAL*     2.7    18.7    +      -       +      -
    970A  LEU*     2.3    56.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 967 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    965A  PRO*     3.1     6.3    -      -       +      -
    966A  ILE*     1.3    77.3    -      -       -      +
    968A  TRP*     1.3    77.0    +      +       +      +
    970A  LEU*     3.0    18.8    +      -       +      +
    971A  VAL*     2.5    61.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 968 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    965A  PRO*     3.3    22.3    +      -       +      +
    967A  TRP*     1.3   105.0    -      +       +      +
    969A  VAL*     1.3    63.4    +      -       +      +
    971A  VAL*     3.4    11.0    +      -       +      +
    972A  GLY      3.0    18.0    +      -       -      -
    687B  GLY*     4.6    19.3    -      -       -      -
    693B  ILE*     3.5    39.1    -      -       +      +
    696B  VAL*     4.4    11.4    -      -       +      -
    697B  LEU*     4.1    24.2    -      -       +      +
    700B  VAL*     3.8    15.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 969 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    964A  ILE*     5.0    12.6    -      -       +      -
    965A  PRO      3.6    15.0    -      -       -      +
    966A  ILE*     2.7    23.5    +      -       +      +
    968A  TRP*     1.3    73.5    -      -       +      +
    970A  LEU*     1.3    51.7    +      -       -      +
    972A  GLY*     3.0     1.6    +      -       -      -
    973A  VAL*     2.5    55.8    +      -       +      +
    700B  VAL*     4.0    27.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 970 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    966A  ILE*     2.3    46.3    +      -       +      +
    967A  TRP*     3.2    22.2    -      -       +      +
    969A  VAL*     1.3    67.9    -      -       -      +
    971A  VAL*     1.3    54.2    +      -       +      +
    973A  VAL*     3.6     9.7    -      -       +      +
    974A  LEU*     2.5    46.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 971 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    967A  TRP*     2.5    53.9    +      -       +      +
    968A  TRP*     3.7    14.4    -      -       +      +
    970A  LEU*     1.3    73.5    -      -       +      +
    972A  GLY*     1.3    61.9    +      -       -      +
    974A  LEU*     3.5     8.2    +      -       +      +
    975A  GLY*     3.2    16.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 972 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    968A  TRP      3.0    10.3    +      -       -      -
    969A  VAL      3.4     2.5    -      -       -      -
    971A  VAL*     1.3    77.7    -      -       -      +
    973A  VAL*     1.3    65.0    +      -       -      +
    975A  GLY*     3.0     3.7    +      -       -      -
    976A  GLY      2.9     6.1    +      -       -      -
    700B  VAL*     3.6    13.2    -      -       -      -
    701B  MET*     5.1     6.5    -      -       -      -
    704B  ILE*     2.7    40.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 973 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    969A  VAL*     2.5    42.2    +      -       +      +
    970A  LEU*     3.6    10.3    -      -       +      +
    972A  GLY*     1.3    71.6    -      -       -      -
    974A  LEU*     1.3    62.7    +      -       -      +
    976A  GLY*     3.0    10.0    +      -       -      +
    977A  LEU*     3.3    21.8    +      -       +      +
    700B  VAL*     5.9     0.2    -      -       +      -
    703B  ALA*     4.4    11.2    -      -       +      -
    704B  ILE*     3.7     3.8    -      -       -      +
    707B  ILE*     3.8    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 974 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    970A  LEU*     2.5    28.3    +      -       +      +
    971A  VAL*     3.5    11.2    -      -       -      +
    973A  VAL*     1.3    74.9    -      -       -      +
    975A  GLY*     1.3    64.2    +      -       -      +
    977A  LEU*     3.0    27.1    +      -       +      +
    978A  LEU*     3.3     5.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 975 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    971A  VAL      3.2     7.9    +      -       -      -
    972A  GLY      3.0     8.2    +      -       -      -
    974A  LEU*     1.3    78.1    -      -       -      +
    976A  GLY*     1.3    54.6    +      -       -      +
    978A  LEU*     2.9    14.4    +      -       -      +
    979A  LEU*     2.5    35.0    +      -       -      +
    704B  ILE*     4.1     5.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 976 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    972A  GLY      2.9     8.9    +      -       -      -
    973A  VAL*     3.0     6.9    +      -       -      -
    974A  LEU      3.0     0.8    -      -       -      -
    975A  GLY*     1.3    79.4    -      -       -      +
    977A  LEU*     1.3    56.2    +      -       -      +
    979A  LEU*     3.7     1.4    -      -       -      +
    980A  LEU*     2.5    35.3    +      -       -      +
    704B  ILE*     3.5    32.3    -      -       -      +
    707B  ILE*     4.3    10.3    -      -       -      +
    708B  GLY      5.2     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 977 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    973A  VAL*     3.3    25.4    -      -       +      +
    974A  LEU*     3.0    20.2    +      -       +      +
    976A  GLY*     1.3    77.5    -      -       -      +
    978A  LEU*     1.3    59.4    +      -       -      +
    980A  LEU*     3.4    22.3    -      -       +      +
    981A  THR*     2.6    35.2    +      -       -      +
    707B  ILE*     4.8    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 978 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    974A  LEU*     3.3     6.5    +      -       +      +
    975A  GLY*     3.1    21.3    -      -       -      +
    977A  LEU*     1.3    83.4    -      -       -      +
    979A  LEU*     1.3    59.7    +      -       -      +
    981A  THR*     3.4     6.9    +      -       -      +
    982A  ILE*     3.3    43.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 979 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    975A  GLY      2.5    19.3    +      -       -      +
    976A  GLY      3.7     1.1    -      -       -      +
    978A  LEU*     1.3    74.0    -      -       -      +
    980A  LEU*     1.3    65.9    +      -       -      +
    981A  THR      3.0     0.3    +      -       -      -
    982A  ILE*     3.0     7.7    +      -       +      +
    983A  LEU*     2.7    50.7    +      -       +      +
    704B  ILE*     3.5    44.4    -      -       +      +
    705B  LEU*     4.3     8.5    -      -       +      -
    708B  GLY*     4.0    16.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 980 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    976A  GLY      2.5    22.5    +      -       -      +
    977A  LEU*     3.4    24.5    -      -       +      +
    979A  LEU*     1.3    73.7    -      -       -      +
    981A  THR*     1.3    63.3    +      -       +      +
    983A  LEU*     3.9     4.6    -      -       -      +
    984A  VAL*     2.9    48.4    +      -       +      +
    707B  ILE*     4.0    20.4    -      -       +      +
    708B  GLY*     4.5     8.1    -      -       -      -
    711B  ALA*     3.3    31.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 981 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    977A  LEU      2.6    18.4    +      -       -      -
    978A  LEU*     3.7     9.2    +      -       -      +
    979A  LEU      3.0     0.2    -      -       -      -
    980A  LEU*     1.3    81.5    -      -       +      +
    982A  ILE*     1.3    62.3    +      -       -      +
    984A  VAL*     3.4     8.9    +      -       +      +
    985A  LEU*     2.9    27.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 982 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    978A  LEU*     3.3    36.3    +      -       +      +
    979A  LEU*     3.0     7.9    +      -       +      +
    981A  THR*     1.3    75.8    -      -       -      +
    983A  LEU*     1.3    63.7    +      -       +      +
    985A  LEU*     3.7     7.3    -      -       +      +
    986A  ALA*     2.8    30.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 983 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    979A  LEU*     2.7    37.2    +      -       +      +
    980A  LEU*     3.9     4.7    -      -       -      +
    982A  ILE*     1.3    78.6    -      -       +      +
    984A  VAL*     1.3    66.0    +      -       -      +
    986A  ALA*     2.9     7.7    +      -       +      +
    987A  MET*     2.8    42.8    +      -       +      +
    705B  LEU*     5.4     3.8    -      -       +      +
    708B  GLY*     3.4    36.3    -      -       -      +
    709B  LEU*     4.2     4.9    -      -       +      +
    712B  LEU*     4.3    11.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 984 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    980A  LEU*     2.9    42.6    +      -       +      +
    981A  THR*     3.6    10.8    -      -       +      +
    983A  LEU*     1.3    76.2    -      -       -      +
    985A  LEU*     1.3    62.8    +      -       +      +
    987A  MET*     2.8    29.2    -      -       +      +
    988A  TRP*     3.0    13.6    +      -       +      +
    711B  ALA*     4.6     9.0    -      -       +      -
    715B  TRP*     3.4    45.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 985 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    981A  THR*     2.9    17.4    +      -       +      +
    982A  ILE*     3.7     7.6    -      -       +      +
    984A  VAL*     1.3    79.5    -      -       +      +
    986A  ALA*     1.3    55.3    +      -       -      +
    988A  TRP*     3.2    19.8    -      -       +      +
    989A  LYS*     2.5    72.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 986 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    982A  ILE*     2.8    22.7    +      -       +      +
    983A  LEU*     3.6     9.4    -      -       +      +
    985A  LEU*     1.3    77.8    -      -       -      +
    987A  MET*     1.3    58.8    +      -       -      +
    989A  LYS*     3.2     9.1    +      -       -      +
    990A  VAL*     2.9    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 987 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    983A  LEU*     2.8    37.5    +      -       +      +
    984A  VAL*     2.8    29.2    -      -       +      +
    986A  ALA*     1.3    74.9    -      -       -      +
    988A  TRP*     1.3    70.7    +      -       -      +
    990A  VAL*     2.9    25.2    +      -       -      +
    991A  GLY      3.4     3.5    +      -       -      -
    712B  LEU*     3.4    64.4    -      -       +      +
    715B  TRP*     3.8    15.9    -      -       +      -
    716B  LYS*     3.4    23.2    +      -       -      +
    719B  ILE*     4.0    10.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 988 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    984A  VAL      3.2    13.0    -      -       -      +
    985A  LEU*     3.2    24.0    -      -       +      +
    987A  MET*     1.3    82.9    -      -       -      +
    989A  LYS*     1.3    55.3    +      -       +      +
    991A  GLY*     3.1     2.1    +      -       -      -
    992A  PHE*     2.5    95.0    +      +       +      +
    715B  TRP*     2.9    39.1    -      +       -      +
    718B  LEU*     5.7     2.8    -      -       -      +
    719B  ILE*     3.0    38.5    -      -       +      +
    722B  HIS*     5.8     3.9    -      +       -      -
----------------------------------------------------------
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Residues in contact with LYS 989 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    985A  LEU*     2.5    56.4    +      -       +      +
    986A  ALA*     3.3    10.1    -      -       -      +
    988A  TRP*     1.3    74.0    -      -       +      +
    990A  VAL*     1.3    53.7    +      -       -      +
    991A  GLY      2.5    17.6    +      -       -      -
    992A  PHE*     4.0    18.2    -      -       +      +
    993A  PHE*     2.9    62.4    +      -       +      +
    994A  LYS      4.1     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 990 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    986A  ALA*     2.9    20.1    +      -       +      +
    987A  MET*     2.9    16.6    +      -       -      +
    989A  LYS*     1.3    74.4    -      -       +      +
    991A  GLY*     1.3    55.6    +      -       -      +
    994A  LYS*     3.4    32.4    +      -       -      +
    716B  LYS*     5.1     8.3    -      -       -      +
    719B  ILE*     6.2     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 991 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    987A  MET      3.4     3.1    +      -       -      -
    988A  TRP      3.1     4.6    +      -       -      -
    989A  LYS      2.5     6.1    +      -       -      -
    990A  VAL*     1.3    77.4    -      -       -      +
    992A  PHE*     1.3    60.5    +      -       -      +
    993A  PHE      3.2     2.0    +      -       -      -
    994A  LYS*     3.5    21.3    +      -       -      +
    995A  ARG*     3.8    18.4    +      -       -      +
    719B  ILE*     5.6     9.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 992 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    988A  TRP*     2.5    72.7    +      +       +      +
    989A  LYS*     4.2    18.8    -      -       +      -
    991A  GLY*     1.3    73.8    -      -       -      +
    993A  PHE*     1.3    68.6    +      +       -      +
    994A  LYS      3.3     1.6    -      -       -      -
    995A  ARG*     4.4     6.7    -      -       -      +
    996A  ASN*     4.1    17.9    +      -       +      +
    719B  ILE*     5.7     2.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 993 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    989A  LYS*     2.9    52.0    +      -       +      +
    992A  PHE*     1.3    87.1    -      +       -      +
    994A  LYS*     1.3    62.6    +      -       -      +
    995A  ARG      3.5     0.9    -      -       -      -
    996A  ASN*     3.9    25.5    +      -       +      +
    998A  PRO*     5.3     3.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 994 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    989A  LYS      4.1     1.0    +      -       -      -
    990A  VAL*     3.4    32.8    +      -       -      +
    991A  GLY*     3.5    15.9    -      -       -      +
    993A  PHE*     1.3    81.4    -      -       -      +
    995A  ARG*     1.3    64.6    +      -       +      +
    996A  ASN      3.5     0.2    +      -       -      -
    997A  ARG*     3.5    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 995 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    991A  GLY      3.8    16.5    +      -       -      +
    992A  PHE*     4.3     6.0    +      -       -      +
    993A  PHE      3.5     0.2    -      -       -      -
    994A  LYS*     1.3    76.2    -      -       +      +
    996A  ASN*     1.3    53.3    +      -       -      +
    997A  ARG*     2.5    28.6    +      -       -      +
   1001A  GLU*     5.6     0.3    -      -       -      -
    722B  HIS*     5.6     5.5    -      -       -      +
    723B  ASP*     4.2    21.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 996 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    992A  PHE*     4.1    18.6    +      -       +      +
    993A  PHE*     3.9    26.2    +      -       +      +
    994A  LYS      3.2     1.8    -      -       -      -
    995A  ARG*     1.3    75.8    -      -       -      +
    997A  ARG*     1.3    67.0    +      -       -      +
    998A  PRO*     2.6    21.7    -      -       +      +
----------------------------------------------------------
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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