Contacts of the helix formed by residues 2868 - 2897 (chain H) in PDB entry 6X34


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 SER2868 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2866H  THR      4.1     1.8    +      -       -      -
   2867H  LEU*     1.3    77.4    -      -       -      +
   2869H  ARG*     1.3    63.0    +      -       -      +
   2870H  GLU*     3.3     8.3    -      -       -      -
   2871H  LEU*     3.9    10.3    -      -       -      +
   2872H  GLN*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG2869 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2868H  SER*     1.3    76.2    -      -       -      +
   2870H  GLU*     1.3    61.6    +      -       -      +
   2872H  GLN*     3.5     5.3    +      -       -      +
   2873H  ALA*     3.0    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2870 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2868H  SER*     3.3     5.1    -      -       -      -
   2869H  ARG*     1.3    79.3    -      -       -      +
   2871H  LEU*     1.3    56.6    +      -       -      +
   2873H  ALA*     3.4     5.3    +      -       -      +
   2874H  MET*     3.1    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2871 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2867H  LEU*     4.2    12.3    -      -       +      -
   2868H  SER*     3.5    20.9    +      -       -      +
   2870H  GLU*     1.3    78.3    -      -       -      +
   2872H  GLN*     1.3    58.1    +      -       -      +
   2874H  MET*     3.5     5.8    +      -       -      +
   2875H  ALA*     3.0    28.1    +      -       -      +
   2927H  LEU*     5.3    14.4    -      -       +      +
   2937H  VAL      6.0     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2872 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2867H  LEU*     4.7     9.8    -      -       +      +
   2868H  SER      3.0    18.6    +      -       -      +
   2869H  ARG*     3.9     6.7    -      -       -      +
   2871H  LEU*     1.3    76.1    -      -       -      +
   2873H  ALA*     1.3    62.7    +      -       -      +
   2875H  ALA*     3.4    15.1    +      -       -      +
   2876H  GLU*     3.5    10.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA2873 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2869H  ARG      3.0    17.2    +      -       -      +
   2870H  GLU*     3.9     6.1    -      -       -      +
   2872H  GLN*     1.3    77.7    -      -       -      +
   2874H  MET*     1.3    60.7    +      -       -      +
   2876H  GLU*     3.3    20.0    +      -       -      +
   2877H  GLN*     3.9     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET2874 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2870H  GLU      3.1    16.8    +      -       -      +
   2871H  LEU*     3.9     7.0    -      -       -      +
   2872H  GLN      3.3     0.2    -      -       -      -
   2873H  ALA*     1.3    74.9    -      -       -      +
   2875H  ALA*     1.3    63.5    +      -       -      +
   2877H  GLN*     3.3    16.8    +      -       -      +
   2878H  LEU*     3.5    10.9    +      -       -      +
   2937H  VAL*     6.5     1.3    -      -       +      -
   2939H  ARG*     6.2     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA2875 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2871H  LEU      3.0    17.9    +      -       -      +
   2872H  GLN*     3.6    10.3    -      -       -      +
   2873H  ALA      3.2     0.6    -      -       -      -
   2874H  MET*     1.3    75.4    -      -       -      +
   2876H  GLU*     1.3    59.9    +      -       -      +
   2878H  LEU*     3.4     2.5    +      -       -      +
   2879H  ALA*     2.9    27.1    +      -       -      +
   2920H  ARG*     5.6     1.5    -      -       -      +
   2923H  ALA*     3.4    31.1    -      -       +      +
   2924H  GLN*     4.9     5.6    -      -       +      +
   2927H  LEU*     5.6     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU2876 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2872H  GLN      3.5     8.0    +      -       -      +
   2873H  ALA*     3.3    13.1    +      -       -      +
   2874H  MET      3.2     0.6    -      -       -      -
   2875H  ALA*     1.3    78.8    -      -       -      +
   2877H  GLN*     1.3    56.8    +      -       -      +
   2879H  ALA*     3.5     6.2    +      -       -      +
   2880H  GLU*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2877 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2873H  ALA      3.9     4.2    +      -       -      +
   2874H  MET*     3.3    12.2    +      -       -      +
   2875H  ALA      3.3     0.6    -      -       -      -
   2876H  GLU*     1.3    79.0    -      -       -      +
   2878H  LEU*     1.3    57.7    +      -       -      +
   2880H  GLU*     3.4     5.9    +      -       -      +
   2881H  ASN*     3.0    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2878 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2812H  SER*     6.3     2.9    -      -       -      -
   2874H  MET      3.5     8.2    +      -       -      +
   2875H  ALA*     3.4     9.3    +      -       -      +
   2876H  GLU      3.3     0.2    -      -       -      -
   2877H  GLN*     1.3    76.4    -      -       -      +
   2879H  ALA*     1.3    65.3    +      -       -      +
   2881H  ASN*     3.4     7.7    +      -       -      +
   2882H  TYR*     3.2    20.8    +      -       -      +
   2923H  ALA*     3.9    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA2879 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2875H  ALA      2.9    18.5    +      -       -      +
   2876H  GLU*     3.9     7.0    -      -       -      +
   2878H  LEU*     1.3    78.4    -      -       -      +
   2880H  GLU*     1.3    61.0    +      -       -      +
   2882H  TYR*     3.4     2.9    +      -       -      +
   2883H  HIS*     3.3    17.2    +      -       -      +
   2916H  LYS      5.5     0.2    -      -       -      +
   2919H  ASP*     3.4    48.4    -      -       +      +
   2920H  ARG*     3.9     9.9    -      -       +      +
   2923H  ALA*     3.9     1.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU2880 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2876H  GLU      2.9    18.5    +      -       -      +
   2877H  GLN*     3.9     6.5    -      -       -      +
   2879H  ALA*     1.3    74.7    -      -       -      +
   2881H  ASN*     1.3    60.7    +      -       -      +
   2883H  HIS*     3.4     4.0    +      -       -      +
   2884H  ASN*     3.0    27.8    +      -       -      +
   2908H  TYR*     4.1    27.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN2881 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2739H  PRO*     5.1     3.4    -      -       -      +
   2740H  VAL*     5.7    10.1    -      -       +      +
   2815H  ALA*     5.2    14.8    -      -       +      -
   2877H  GLN      3.0    17.4    +      -       -      +
   2878H  LEU*     3.7     8.5    -      -       -      +
   2879H  ALA      3.3     0.4    -      -       -      -
   2880H  GLU*     1.3    75.7    -      -       -      +
   2882H  TYR*     1.3    58.9    +      -       -      +
   2884H  ASN*     3.4     6.2    +      -       -      +
   2885H  THR*     2.9    29.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR2882 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2878H  LEU      3.2    10.3    +      -       -      +
   2879H  ALA*     3.7    10.5    -      -       -      +
   2880H  GLU      3.3     0.4    -      -       -      -
   2881H  ASN*     1.3    79.5    -      -       -      +
   2883H  HIS*     1.3    57.4    +      -       -      +
   2885H  THR*     3.8     4.5    -      -       -      -
   2886H  TRP*     3.0    30.8    +      -       -      +
   2919H  ASP*     4.8    11.0    -      -       +      +
   2922H  LYS*     5.8     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS2883 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2879H  ALA      3.3    10.4    +      -       -      +
   2880H  GLU*     3.8     9.2    -      -       -      +
   2881H  ASN      3.3     0.4    -      -       -      -
   2882H  TYR*     1.3    79.0    -      -       -      +
   2884H  ASN*     1.3    53.9    +      -       -      +
   2886H  TRP*     4.2     3.5    -      -       -      +
   2887H  GLY*     2.7    32.4    +      -       -      -
   2908H  TYR*     5.0    12.8    -      -       +      +
   2919H  ASP*     5.1     7.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN2884 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737H  PRO*     3.4    17.1    -      -       +      +
   2738H  ARG      4.1    24.7    -      -       -      +
   2739H  PRO*     4.2    13.7    -      -       +      +
   2880H  GLU      3.0    17.4    +      -       -      +
   2881H  ASN*     3.8     6.7    -      -       -      +
   2882H  TYR      3.3     0.2    -      -       -      -
   2883H  HIS*     1.3    73.5    -      -       -      +
   2885H  THR*     1.3    60.1    +      -       -      +
   2888H  ARG*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR2885 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2739H  PRO*     4.1    16.5    -      -       -      +
   2881H  ASN      2.9    17.2    +      -       -      -
   2882H  TYR*     3.8     6.3    -      -       -      -
   2883H  HIS      3.3     0.2    -      -       -      -
   2884H  ASN*     1.3    77.9    -      -       -      +
   2886H  TRP*     1.3    61.6    +      -       -      +
   2888H  ARG*     3.9     2.8    -      -       -      +
   2889H  LYS*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP2886 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2882H  TYR      3.0    17.7    +      -       -      +
   2883H  HIS*     4.2     3.8    -      -       -      +
   2885H  THR*     1.3    75.8    -      -       -      +
   2887H  GLY*     1.3    59.5    +      -       -      +
   2889H  LYS*     3.5     5.0    +      -       -      +
   2890H  LYS*     3.0    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY2887 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737H  PRO*     4.3     8.7    -      -       -      -
   2883H  HIS      2.7    23.8    +      -       -      -
   2884H  ASN      4.0     0.4    -      -       -      -
   2886H  TRP*     1.3    74.7    -      -       -      +
   2888H  ARG*     1.3    60.4    +      -       -      +
   2890H  LYS*     3.5     5.9    +      -       -      +
   2891H  LYS*     3.2    22.5    +      -       -      +
   2904H  LEU      5.9     2.0    -      -       -      -
   2905H  LEU*     6.1     6.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG2888 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737H  PRO*     3.9    16.9    -      -       +      +
   2739H  PRO*     5.3     6.7    -      -       +      -
   2884H  ASN      3.0    18.8    +      -       -      +
   2885H  THR*     3.9     4.9    -      -       -      +
   2886H  TRP      3.3     0.2    -      -       -      -
   2887H  GLY*     1.3    75.1    -      -       -      +
   2889H  LYS*     1.3    62.4    +      -       -      +
   2891H  LYS*     3.5     6.4    +      -       -      +
   2892H  GLN*     3.3    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS2889 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2885H  THR      3.2    17.0    +      -       -      +
   2886H  TRP*     4.0     6.3    -      -       -      +
   2887H  GLY      3.3     0.2    -      -       -      -
   2888H  ARG*     1.3    74.5    -      -       -      +
   2890H  LYS*     1.3    60.5    +      -       -      +
   2892H  GLN*     3.5     5.0    +      -       -      +
   2893H  GLU*     3.0    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS2890 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2886H  TRP      3.0    18.4    +      -       -      +
   2887H  GLY*     3.9     7.4    -      -       -      +
   2888H  ARG      3.3     0.2    -      -       -      -
   2889H  LYS*     1.3    74.7    -      -       -      +
   2891H  LYS*     1.3    60.7    +      -       -      +
   2893H  GLU*     4.0     5.6    -      -       -      +
   2894H  LEU*     3.0    30.8    +      -       -      +
   2902H  HIS*     5.8     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS2891 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2887H  GLY      3.2    16.5    +      -       -      +
   2888H  ARG*     3.8     7.4    -      -       -      +
   2889H  LYS      3.3     0.6    -      -       -      -
   2890H  LYS*     1.3    78.1    -      -       -      +
   2892H  GLN*     1.3    59.5    +      -       -      +
   2894H  LEU*     4.1     4.3    -      -       -      +
   2895H  GLU*     3.2    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2892 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2888H  ARG      3.3    13.5    +      -       -      +
   2889H  LYS*     4.1     5.2    -      -       -      +
   2890H  LYS      3.3     0.2    -      -       -      -
   2891H  LYS*     1.3    77.0    -      -       -      +
   2893H  GLU*     1.3    62.6    +      -       -      +
   2895H  GLU*     4.1     4.4    -      -       -      +
   2896H  ALA*     3.2    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2893 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2889H  LYS      3.0    18.6    +      -       -      +
   2890H  LYS*     4.0     6.3    -      -       -      +
   2892H  GLN*     1.3    76.3    -      -       -      +
   2894H  LEU*     1.3    63.9    +      -       -      +
   2896H  ALA*     3.5     6.5    +      -       -      +
   2897H  LYS*     3.4    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2894 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2890H  LYS      3.0    18.5    +      -       -      +
   2891H  LYS*     4.1     4.7    -      -       -      +
   2892H  GLN      3.4     0.2    -      -       -      -
   2893H  GLU*     1.3    75.9    -      -       -      +
   2895H  GLU*     1.3    63.2    +      -       -      +
   2897H  LYS*     3.2    11.4    +      -       -      +
   2898H  GLY      3.5     0.5    +      -       -      -
   2899H  GLY*     2.8    39.5    +      -       -      +
   2900H  GLY*     4.9    10.8    -      -       -      +
   2901H  THR*     5.4     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2895 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2891H  LYS      3.2    16.2    +      -       -      +
   2892H  GLN*     4.1     5.2    -      -       -      +
   2893H  GLU      3.4     0.2    -      -       -      -
   2894H  LEU*     1.3    78.9    -      -       -      +
   2896H  ALA*     1.3    60.8    +      -       -      +
   2897H  LYS      3.4     0.5    +      -       -      -
   2898H  GLY*     3.4    10.2    +      -       -      -
   2899H  GLY*     3.9    11.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA2896 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2892H  GLN      3.2    19.5    +      -       -      +
   2893H  GLU*     3.9     6.3    -      -       -      +
   2894H  LEU      3.3     0.6    -      -       -      -
   2895H  GLU*     1.3    77.3    -      -       -      +
   2897H  LYS*     1.3    57.9    +      -       -      +
   2898H  GLY      3.4     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS2897 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2893H  GLU      3.4    14.2    +      -       -      +
   2894H  LEU*     3.2     7.5    +      -       -      +
   2895H  GLU      3.2     1.2    -      -       -      -
   2896H  ALA*     1.3    74.9    -      -       -      +
   2898H  GLY*     1.3    58.1    +      -       -      +
   2899H  GLY      3.7     3.3    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il