Contacts of the helix formed by residues 2868 - 2897 (chain F) 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 F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2866F  THR      4.1     1.6    +      -       -      -
   2867F  LEU*     1.3    76.2    -      -       -      +
   2869F  ARG*     1.3    61.9    +      -       -      +
   2870F  GLU*     3.3     8.3    -      -       -      -
   2871F  LEU*     3.9    10.4    -      -       -      +
   2872F  GLN*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG2869 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2868F  SER*     1.3    75.7    -      -       -      +
   2870F  GLU*     1.3    61.0    +      -       -      +
   2872F  GLN*     3.9     5.5    -      -       -      +
   2873F  ALA*     3.0    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2870 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2868F  SER*     3.3     5.8    -      -       -      -
   2869F  ARG*     1.3    79.0    -      -       -      +
   2871F  LEU*     1.3    57.0    +      -       -      +
   2873F  ALA*     3.4     5.3    +      -       -      +
   2874F  MET*     3.1    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2871 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2867F  LEU*     4.2    11.2    -      -       +      -
   2868F  SER*     3.5    20.9    +      -       -      +
   2869F  ARG      3.4     0.2    -      -       -      -
   2870F  GLU*     1.3    79.6    -      -       -      +
   2872F  GLN*     1.3    58.2    +      -       -      +
   2874F  MET*     3.5     5.8    +      -       -      +
   2875F  ALA*     3.0    28.1    +      -       -      +
   2927F  LEU*     5.3    14.4    -      -       +      +
   2937F  VAL      6.0     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2872 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2867F  LEU*     4.7     9.4    -      -       +      +
   2868F  SER      3.0    19.0    +      -       -      +
   2869F  ARG*     3.9     6.3    -      -       -      +
   2871F  LEU*     1.3    76.3    -      -       -      +
   2873F  ALA*     1.3    62.2    +      -       -      +
   2875F  ALA*     3.4    14.9    +      -       -      +
   2876F  GLU*     3.5    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA2873 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2869F  ARG      3.0    18.7    +      -       -      +
   2870F  GLU*     3.9     5.6    -      -       -      +
   2872F  GLN*     1.3    77.1    -      -       -      +
   2874F  MET*     1.3    60.7    +      -       -      +
   2876F  GLU*     3.3    19.0    +      -       -      +
   2877F  GLN*     3.9     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET2874 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2870F  GLU      3.1    17.8    +      -       -      +
   2871F  LEU*     3.9     6.5    -      -       -      +
   2873F  ALA*     1.3    74.3    -      -       -      +
   2875F  ALA*     1.3    65.1    +      -       -      +
   2877F  GLN*     3.3    17.0    +      -       -      +
   2878F  LEU*     3.5    11.1    +      -       -      +
   2937F  VAL*     6.5     1.6    -      -       +      -
   2939F  ARG*     6.2     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA2875 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2871F  LEU      3.0    17.3    +      -       -      +
   2872F  GLN*     3.6    10.3    -      -       -      +
   2873F  ALA      3.2     0.6    -      -       -      -
   2874F  MET*     1.3    75.8    -      -       -      +
   2876F  GLU*     1.3    59.3    +      -       -      +
   2878F  LEU*     3.4     3.2    +      -       -      +
   2879F  ALA*     2.9    26.2    +      -       -      +
   2920F  ARG*     5.6     1.5    -      -       +      +
   2923F  ALA*     3.4    31.1    -      -       +      +
   2924F  GLN*     4.9     5.6    -      -       +      +
   2927F  LEU*     5.6     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU2876 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2872F  GLN      3.5     7.0    +      -       -      +
   2873F  ALA*     3.3    13.8    +      -       -      +
   2874F  MET      3.2     0.8    -      -       -      -
   2875F  ALA*     1.3    79.3    -      -       -      +
   2877F  GLN*     1.3    57.1    +      -       -      +
   2879F  ALA*     3.9     5.6    -      -       -      +
   2880F  GLU*     2.9    30.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2877 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2873F  ALA      3.9     4.0    +      -       -      +
   2874F  MET*     3.3    12.2    +      -       -      +
   2875F  ALA      3.3     0.6    -      -       -      -
   2876F  GLU*     1.3    79.2    -      -       -      +
   2878F  LEU*     1.3    57.2    +      -       -      +
   2880F  GLU*     3.4     5.9    +      -       -      +
   2881F  ASN*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2878 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2812F  SER*     6.3     2.7    -      -       -      -
   2874F  MET      3.5     8.7    +      -       -      +
   2875F  ALA*     3.4     8.6    +      -       -      +
   2876F  GLU      3.3     0.2    -      -       -      -
   2877F  GLN*     1.3    76.7    -      -       -      +
   2879F  ALA*     1.3    66.6    +      -       -      +
   2881F  ASN*     3.4     7.2    +      -       -      +
   2882F  TYR*     3.2    21.0    +      -       -      +
   2923F  ALA*     3.9    17.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA2879 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2875F  ALA      2.9    17.6    +      -       -      +
   2876F  GLU*     3.9     7.0    -      -       -      +
   2878F  LEU*     1.3    77.7    -      -       -      +
   2880F  GLU*     1.3    61.5    +      -       -      +
   2882F  TYR*     3.4     2.7    +      -       -      +
   2883F  HIS*     3.3    17.8    +      -       -      +
   2916F  LYS      5.5     0.4    -      -       -      +
   2919F  ASP*     3.4    48.2    -      -       +      +
   2920F  ARG*     3.9     9.6    -      -       +      +
   2923F  ALA*     3.9     2.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU2880 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2876F  GLU      2.9    18.4    +      -       -      +
   2877F  GLN*     3.9     5.6    -      -       -      +
   2878F  LEU      3.3     0.2    -      -       -      -
   2879F  ALA*     1.3    73.2    -      -       -      +
   2881F  ASN*     1.3    60.1    +      -       -      +
   2883F  HIS*     3.4     4.1    +      -       -      +
   2884F  ASN*     3.0    28.1    +      -       -      +
   2908F  TYR*     4.1    27.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN2881 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2739F  PRO*     5.1     3.4    -      -       -      +
   2740F  VAL*     5.7     9.6    -      -       +      +
   2815F  ALA*     5.2    14.8    -      -       +      -
   2877F  GLN      3.0    16.8    +      -       -      +
   2878F  LEU*     3.7     8.5    -      -       -      +
   2879F  ALA      3.3     0.4    -      -       -      -
   2880F  GLU*     1.3    75.2    -      -       -      +
   2882F  TYR*     1.3    59.8    +      -       -      +
   2884F  ASN*     3.4     6.5    +      -       -      +
   2885F  THR*     2.9    29.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR2882 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2878F  LEU      3.2    11.6    +      -       -      +
   2879F  ALA*     3.7    10.3    -      -       -      +
   2880F  GLU      3.3     0.2    -      -       -      -
   2881F  ASN*     1.3    78.5    -      -       -      +
   2883F  HIS*     1.3    58.6    +      -       -      +
   2885F  THR*     3.8     5.5    -      -       -      -
   2886F  TRP*     3.0    31.0    +      -       -      +
   2919F  ASP*     4.8    10.5    -      -       +      +
   2922F  LYS*     5.8     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS2883 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737F  PRO*     5.2     0.2    -      -       -      +
   2879F  ALA      3.3    10.1    +      -       -      +
   2880F  GLU*     3.8     9.9    -      -       -      +
   2881F  ASN      3.3     0.4    -      -       -      -
   2882F  TYR*     1.3    79.0    -      -       -      +
   2884F  ASN*     1.3    54.7    +      -       -      +
   2886F  TRP*     4.2     3.5    -      -       -      +
   2887F  GLY*     2.7    31.7    +      -       -      -
   2908F  TYR*     5.0    12.8    -      -       +      -
   2919F  ASP*     5.1     7.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN2884 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737F  PRO*     3.4    17.0    -      -       +      +
   2738F  ARG      4.1    23.8    -      -       -      +
   2739F  PRO*     4.2    12.9    -      -       +      +
   2880F  GLU      3.0    17.0    +      -       -      +
   2881F  ASN*     3.8     6.7    -      -       -      +
   2882F  TYR      3.3     0.2    -      -       -      -
   2883F  HIS*     1.3    74.8    -      -       -      +
   2885F  THR*     1.3    60.7    +      -       -      +
   2888F  ARG*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR2885 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2739F  PRO*     4.1    16.7    -      -       -      +
   2881F  ASN      2.9    17.9    +      -       -      -
   2882F  TYR*     3.8     6.1    -      -       -      -
   2884F  ASN*     1.3    77.5    -      -       -      +
   2886F  TRP*     1.3    61.7    +      -       -      +
   2888F  ARG*     3.5     2.8    +      -       -      +
   2889F  LYS*     3.2    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP2886 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2882F  TYR      3.0    18.3    +      -       -      +
   2883F  HIS*     4.2     3.8    -      -       -      +
   2885F  THR*     1.3    75.4    -      -       -      +
   2887F  GLY*     1.3    59.3    +      -       -      +
   2889F  LYS*     3.5     5.7    +      -       -      +
   2890F  LYS*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY2887 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737F  PRO*     4.3     8.7    -      -       -      -
   2883F  HIS      2.7    23.2    +      -       -      -
   2884F  ASN      4.0     0.7    -      -       -      -
   2886F  TRP*     1.3    75.6    -      -       -      +
   2888F  ARG*     1.3    59.9    +      -       -      +
   2890F  LYS*     3.5     5.5    +      -       -      +
   2891F  LYS*     3.2    23.4    +      -       -      +
   2904F  LEU      5.9     2.5    -      -       -      -
   2905F  LEU*     6.1     5.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG2888 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2737F  PRO*     3.9    16.9    -      -       +      +
   2739F  PRO*     5.3     6.5    -      -       +      -
   2884F  ASN      3.0    18.8    +      -       -      +
   2885F  THR*     3.9     4.5    -      -       -      +
   2886F  TRP      3.3     0.2    -      -       -      -
   2887F  GLY*     1.3    77.7    -      -       -      +
   2889F  LYS*     1.3    62.1    +      -       -      +
   2891F  LYS*     3.5     6.7    +      -       -      +
   2892F  GLN*     3.3    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS2889 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2885F  THR      3.2    17.4    +      -       -      +
   2886F  TRP*     4.0     5.8    -      -       -      +
   2888F  ARG*     1.3    75.1    -      -       -      +
   2890F  LYS*     1.3    59.3    +      -       -      +
   2892F  GLN*     3.5     5.6    +      -       -      +
   2893F  GLU*     3.0    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS2890 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2886F  TRP      3.0    18.6    +      -       -      +
   2887F  GLY*     3.9     6.5    -      -       -      +
   2888F  ARG      3.3     0.2    -      -       -      -
   2889F  LYS*     1.3    74.5    -      -       -      +
   2891F  LYS*     1.3    60.9    +      -       -      +
   2893F  GLU*     4.0     5.1    -      -       -      +
   2894F  LEU*     3.0    30.8    +      -       -      +
   2902F  HIS*     5.8     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS2891 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2887F  GLY      3.2    16.1    +      -       -      +
   2888F  ARG*     3.8     6.7    -      -       -      +
   2889F  LYS      3.3     0.2    -      -       -      -
   2890F  LYS*     1.3    78.5    -      -       -      +
   2892F  GLN*     1.3    60.8    +      -       -      +
   2894F  LEU*     4.1     3.9    -      -       -      +
   2895F  GLU*     3.2    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN2892 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2888F  ARG      3.3    13.5    +      -       -      +
   2889F  LYS*     4.1     5.4    -      -       -      +
   2890F  LYS      3.3     0.4    -      -       -      -
   2891F  LYS*     1.3    77.0    -      -       -      +
   2893F  GLU*     1.3    64.2    +      -       -      +
   2895F  GLU*     3.7     4.3    +      -       -      +
   2896F  ALA*     3.2    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2893 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2889F  LYS      3.0    18.8    +      -       -      +
   2890F  LYS*     3.5     6.0    +      -       -      +
   2892F  GLN*     1.3    76.5    -      -       -      +
   2894F  LEU*     1.3    63.4    +      -       -      +
   2896F  ALA*     3.5     6.3    +      -       -      +
   2897F  LYS*     3.4    21.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU2894 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2890F  LYS      3.0    18.1    +      -       -      +
   2891F  LYS*     4.1     5.2    -      -       -      +
   2893F  GLU*     1.3    76.1    -      -       -      +
   2895F  GLU*     1.3    62.3    +      -       -      +
   2897F  LYS*     3.2    11.4    +      -       -      +
   2898F  GLY      3.5     0.5    +      -       -      -
   2899F  GLY*     2.8    38.3    +      -       -      +
   2900F  GLY      4.9    10.5    -      -       -      +
   2901F  THR*     5.4     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU2895 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2891F  LYS      3.2    15.9    +      -       -      +
   2892F  GLN*     4.1     5.4    -      -       -      +
   2894F  LEU*     1.3    79.2    -      -       -      +
   2896F  ALA*     1.3    60.8    +      -       -      +
   2897F  LYS      3.4     0.3    +      -       -      -
   2898F  GLY*     3.4    10.4    +      -       -      -
   2899F  GLY*     3.9    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA2896 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2892F  GLN      3.2    19.9    +      -       -      +
   2893F  GLU*     3.9     6.5    -      -       -      +
   2894F  LEU      3.3     0.6    -      -       -      -
   2895F  GLU*     1.3    77.3    -      -       -      +
   2897F  LYS*     1.3    58.3    +      -       -      +
   2898F  GLY      3.4     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS2897 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2893F  GLU      3.4    14.8    +      -       -      +
   2894F  LEU*     3.2     7.3    +      -       -      +
   2895F  GLU      3.2     1.2    -      -       -      -
   2896F  ALA*     1.3    76.3    -      -       -      +
   2898F  GLY*     1.3    58.2    +      -       -      +
   2899F  GLY      3.7     3.7    -      -       -      +
----------------------------------------------------------
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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