Contacts of the helix formed by residues 819 - 852 (chain N) in PDB entry 5L4K


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 VAL 819 (chain N).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817N  LEU*     3.8     2.8    -      -       -      +
    818N  GLU*     1.3   103.4    -      -       -      +
    820N  PRO*     1.3    65.9    -      -       -      +
    821N  LYS*     3.4     3.1    -      -       -      +
    822N  GLU*     3.7    29.8    -      -       +      +
    823N  LYS*     3.1    26.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 820 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817N  LEU*     3.6    33.0    -      -       +      -
    818N  GLU      3.4     9.6    -      -       -      +
    819N  VAL*     1.3    87.6    -      -       -      +
    821N  LYS*     1.3    66.0    +      -       +      +
    823N  LYS*     3.4    11.3    +      -       +      +
    824N  GLU*     3.0    34.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 821 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817N  LEU*     6.3     0.4    -      -       +      -
    819N  VAL*     5.6     0.7    -      -       -      -
    820N  PRO*     1.3    86.1    -      -       +      +
    822N  GLU*     1.3    56.7    +      -       -      +
    824N  GLU*     3.2     9.5    +      -       -      +
    825N  LYS*     3.0    56.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 822 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    819N  VAL*     3.7    32.4    +      -       +      +
    820N  PRO      3.3     0.4    -      -       -      -
    821N  LYS*     1.3    75.3    -      -       -      +
    823N  LYS*     1.3    69.2    +      -       -      +
    825N  LYS*     3.0    28.2    +      -       +      +
    826N  GLU*     3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 823 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    818N  GLU*     4.0    27.5    +      -       -      +
    819N  VAL*     3.1    19.2    +      -       +      +
    820N  PRO*     3.5    13.0    -      -       +      +
    821N  LYS      3.3     0.2    -      -       -      -
    822N  GLU*     1.3    80.1    -      -       -      +
    824N  GLU*     1.3    57.4    +      -       +      +
    826N  GLU*     2.9    24.2    +      -       -      +
    827N  LYS*     3.0    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 824 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    820N  PRO      3.0    19.5    +      -       -      +
    821N  LYS*     3.6    10.8    -      -       -      +
    823N  LYS*     1.3    75.4    -      -       -      +
    825N  LYS*     1.3    56.9    +      -       -      +
    827N  LYS*     3.3    36.3    +      -       -      +
    828N  VAL*     2.9    43.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 825 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    821N  LYS*     3.0    55.4    +      -       +      +
    822N  GLU*     3.0    26.6    +      -       +      +
    824N  GLU*     1.3    77.9    -      -       -      +
    826N  GLU*     1.3    56.8    +      -       -      +
    828N  VAL*     3.9     5.1    -      -       -      +
    829N  SER*     2.9    30.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 826 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    822N  GLU*     3.0    19.2    +      -       -      +
    823N  LYS*     2.9    13.2    +      -       -      +
    825N  LYS*     1.3    78.3    -      -       -      +
    827N  LYS*     1.3    59.4    +      -       +      +
    829N  SER*     2.7    27.1    +      -       -      -
    830N  THR*     2.8    27.7    +      -       -      +
    833N  LEU*     6.0     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 827 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    823N  LYS*     3.0    27.2    +      -       -      +
    824N  GLU*     3.3    34.3    +      -       -      +
    825N  LYS      3.4     0.2    -      -       -      -
    826N  GLU*     1.3    75.2    -      -       +      +
    828N  VAL*     1.3    64.5    +      -       +      +
    830N  THR*     3.2    11.0    +      -       -      -
    831N  ALA*     3.0    21.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 828 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    824N  GLU*     2.9    30.6    +      -       +      +
    825N  LYS*     4.0     6.1    -      -       -      +
    827N  LYS*     1.3    76.4    -      -       +      +
    829N  SER*     1.3    57.8    +      -       -      +
    831N  ALA*     3.2     7.6    +      -       +      +
    832N  VAL*     2.9    39.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 829 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    825N  LYS      2.9    17.0    +      -       -      -
    826N  GLU*     2.7    34.7    +      -       -      -
    828N  VAL*     1.3    74.8    -      -       -      +
    830N  THR*     1.3    64.2    +      -       -      +
    832N  VAL*     3.3     8.8    +      -       -      +
    833N  LEU*     3.0    38.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 830 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    826N  GLU*     2.8    27.6    +      -       -      +
    827N  LYS*     3.2    10.4    +      -       -      -
    829N  SER*     1.3    77.8    +      -       -      +
    831N  ALA*     1.3    60.7    +      -       -      +
    833N  LEU*     3.6    17.2    +      -       +      +
    834N  SER*     3.8     9.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 831 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    827N  LYS      3.0    12.8    +      -       -      +
    828N  VAL*     3.2    10.5    +      -       +      +
    830N  THR*     1.3    76.2    -      -       -      +
    832N  VAL*     1.3    62.9    +      -       +      +
    834N  SER*     2.7    25.9    +      -       -      -
    835N  ILE*     3.7     9.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 832 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    828N  VAL*     2.9    34.6    +      -       +      +
    829N  SER*     3.7     8.7    -      -       -      +
    831N  ALA*     1.3    76.1    -      -       +      +
    833N  LEU*     1.3    61.9    +      -       +      +
    835N  ILE*     3.1    20.4    +      -       +      +
    836N  THR*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 833 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    826N  GLU*     6.0     1.1    -      -       -      +
    829N  SER*     3.0    32.9    +      -       -      +
    830N  THR*     4.0    10.1    -      -       -      +
    831N  ALA      3.2     0.8    -      -       -      -
    832N  VAL*     1.3    80.4    -      -       +      +
    834N  SER*     1.3    56.2    +      -       -      +
    836N  THR*     3.5    19.3    +      -       +      +
    837N  ALA*     2.9    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 834 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    830N  THR      3.8     7.7    +      -       -      -
    831N  ALA*     2.7    23.7    +      -       -      -
    833N  LEU*     1.3    73.5    -      -       -      +
    835N  ILE*     1.3    63.9    +      -       -      +
    837N  ALA*     3.3    10.5    +      -       -      +
    838N  LYS*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 835 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    831N  ALA      3.7    14.4    -      -       -      +
    832N  VAL*     3.1    18.3    +      -       +      +
    834N  SER*     1.3    76.6    -      -       -      +
    836N  THR*     1.3    62.7    +      -       -      +
    838N  LYS*     3.0    13.0    +      -       +      +
    839N  ALA*     2.9    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 836 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    832N  VAL*     3.0    20.9    +      -       -      +
    833N  LEU*     3.5    25.2    -      -       +      +
    835N  ILE*     1.3    76.0    -      -       -      +
    837N  ALA*     1.3    58.3    +      -       -      +
    839N  ALA*     2.8    27.7    +      -       +      +
    840N  LYS*     3.1    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 837 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    833N  LEU      2.9    15.0    +      -       -      +
    834N  SER*     3.3    14.3    +      -       -      +
    836N  THR*     1.3    74.4    -      -       -      +
    838N  LYS*     1.3    62.3    +      -       -      +
    840N  LYS*     3.1    11.4    +      -       -      +
    841N  LYS*     3.0    41.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 838 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    834N  SER      3.0    12.7    +      -       -      +
    835N  ILE*     3.0    17.0    +      -       +      +
    837N  ALA*     1.3    75.5    -      -       -      +
    839N  ALA*     1.3    56.1    +      -       -      +
    841N  LYS*     3.2    33.0    +      -       -      +
    842N  LYS*     2.9    28.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 839 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    835N  ILE      2.9    10.3    +      -       -      +
    836N  THR*     2.8    18.9    +      -       +      +
    838N  LYS*     1.3    74.8    -      -       -      +
    840N  LYS*     1.3    62.8    +      -       -      +
    842N  LYS*     3.6    10.9    +      -       -      +
    843N  GLU*     3.6    21.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 840 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    836N  THR      3.1     7.6    +      -       -      +
    837N  ALA*     3.1    11.6    +      -       -      +
    839N  ALA*     1.3    76.6    -      -       -      +
    841N  LYS*     1.3    80.1    +      -       +      +
    843N  GLU*     3.1    21.0    +      -       +      +
    844N  LYS*     3.1    43.4    +      -       -      +
    610Z  GLN*     4.7     7.3    +      -       -      +
    613Z  LEU*     3.6    33.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 841 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    837N  ALA*     3.0    28.3    +      -       -      +
    838N  LYS*     3.2    35.9    +      -       -      +
    840N  LYS*     1.3    90.3    -      -       +      +
    842N  LYS*     1.3    65.2    +      -       -      +
    844N  LYS*     3.1    16.6    -      -       +      +
    845N  GLU*     3.0    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 842 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    838N  LYS*     2.9    13.1    +      -       +      +
    839N  ALA*     3.6    14.1    -      -       -      +
    841N  LYS*     1.3    76.6    -      -       -      +
    843N  GLU*     1.3    64.7    +      -       -      +
    845N  GLU*     3.5     6.6    +      -       +      +
    846N  LYS*     2.9    42.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 843 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    839N  ALA      3.6    18.4    -      -       -      +
    840N  LYS*     3.1    10.3    +      -       +      +
    842N  LYS*     1.3    78.5    -      -       -      +
    844N  LYS*     1.3    68.9    +      -       -      +
    846N  LYS*     2.8    51.5    +      -       -      +
    847N  GLU*     3.2    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 844 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    840N  LYS*     3.1    34.4    +      -       -      +
    841N  LYS*     3.1    24.2    -      -       +      +
    843N  GLU*     1.3    76.2    -      -       -      +
    845N  GLU*     1.3    83.7    +      -       -      +
    847N  GLU*     3.1    33.0    +      -       -      +
    848N  LYS*     3.9    15.4    -      -       +      +
    610Z  GLN*     3.4    42.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 845 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    841N  LYS*     3.0    17.4    +      -       +      +
    842N  LYS*     4.2     5.4    -      -       +      +
    844N  LYS*     1.3    98.2    +      -       -      +
    846N  LYS*     1.3    58.8    +      -       -      +
    847N  GLU      3.1     2.5    -      -       -      -
    848N  LYS*     3.0    23.5    +      -       -      +
    849N  LYS*     2.9    27.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 846 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    842N  LYS*     2.9    28.1    +      -       -      +
    843N  GLU*     2.8    48.4    +      -       -      +
    845N  GLU*     1.3    75.9    -      -       -      +
    847N  GLU*     1.3    59.7    +      -       -      +
    849N  LYS*     3.6    18.7    +      -       +      +
    850N  GLU*     4.2     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 847 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    843N  GLU*     3.2    16.1    +      -       -      +
    844N  LYS*     3.1    26.5    +      -       -      +
    845N  GLU      3.1     0.8    -      -       -      -
    846N  LYS*     1.3    77.9    -      -       +      +
    848N  LYS*     1.3    66.3    +      -       +      +
    849N  LYS      3.1     0.4    -      -       -      -
    850N  GLU*     3.1    10.4    +      -       -      +
    851N  GLU*     3.1    40.4    +      -       -      +
    609Z  VAL*     4.9    16.0    -      -       -      +
    610Z  GLN*     5.4     1.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 848 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    844N  LYS*     3.9    16.8    -      -       -      +
    845N  GLU*     3.0    27.0    +      -       -      +
    847N  GLU*     1.3    82.8    +      -       +      +
    849N  LYS*     1.3    59.8    +      -       -      +
    850N  GLU      3.2     1.1    -      -       -      -
    851N  GLU*     3.2    39.8    +      -       +      +
    852N  GLU*     3.0    39.2    +      -       +      +
    853N  LYS*     3.2     8.3    +      -       -      -
    605Z  ASN      3.3    22.8    +      -       -      -
    606Z  VAL*     3.7    21.0    -      -       -      +
    610Z  GLN*     6.1     2.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 849 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    845N  GLU      2.9    10.3    +      -       -      +
    846N  LYS*     3.7    17.5    -      -       +      +
    847N  GLU      3.1     0.6    -      -       -      -
    848N  LYS*     1.3    77.8    -      -       -      +
    850N  GLU*     1.3    75.8    +      -       -      +
    852N  GLU      3.3    11.4    -      -       -      +
    853N  LYS*     4.0    20.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 850 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    846N  LYS      4.3    10.3    -      -       -      +
    847N  GLU*     3.1     7.0    +      -       -      +
    849N  LYS*     1.3   100.2    +      -       -      +
    851N  GLU*     1.3    66.9    +      -       +      +
    852N  GLU      4.0     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 851 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    847N  GLU*     3.1    27.7    +      -       -      +
    848N  LYS*     3.2    34.5    +      -       +      -
    850N  GLU*     1.3    80.4    -      -       +      +
    852N  GLU*     1.3    75.5    +      -       +      +
    603Z  SER      4.5     8.6    -      -       -      +
    604Z  GLY*     3.9    20.3    -      -       -      +
    605Z  ASN      4.7     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 852 (chain N). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    848N  LYS*     3.0    20.3    +      -       +      +
    849N  LYS      3.3     9.7    -      -       -      +
    850N  GLU      4.0     2.6    -      -       -      +
    851N  GLU*     1.3    91.5    -      -       +      +
    853N  LYS*     1.3    74.6    +      -       -      +
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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