Contacts of the helix formed by residues 194 - 221 (chain D) in PDB entry 4IL6


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 ASN 194 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324B  LEU*     4.4     8.9    -      -       -      +
    189D  HIS      6.0     0.2    -      -       -      +
    190D  ASN      4.0     1.2    +      -       -      +
    191D  TRP*     3.1    47.1    +      -       +      +
    193D  LEU*     1.3    78.0    -      -       -      +
    195D  PRO*     1.3    63.4    -      -       -      +
    196D  PHE*     3.1    36.6    +      -       -      +
    197D  HIS*     3.1     4.3    +      -       -      +
    198D  MET*     3.0    27.0    +      -       -      +
    285D  GLY*     4.5     5.0    +      -       -      -
    289D  LEU*     4.3    10.5    -      -       -      +
    293D  LEU      4.7     1.2    +      -       -      -
    294D  ARG*     4.5     0.8    -      -       -      +
    295D  SER*     3.6    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 195 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    325B  PHE*     3.9    13.7    -      -       +      -
    193D  LEU      3.5     6.7    -      -       -      +
    194D  ASN*     1.3    89.0    -      -       -      +
    196D  PHE*     1.3    60.5    +      -       +      +
    198D  MET*     3.5    13.3    -      -       -      +
    199D  MET*     3.0    34.7    +      -       -      +
    295D  SER*     3.3    16.4    -      -       -      +
     30L  LEU*     4.0    11.3    -      -       +      +
     31L  PHE*     3.8    31.6    -      -       +      -
     34L  TYR*     3.8    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 196 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324B  LEU*     4.0    24.7    -      -       +      -
    453B  PHE*     5.4     3.6    -      +       -      -
    607B  CLA      3.9    32.1    -      -       +      -
    622B  LMG      4.1    18.4    -      -       +      -
    194D  ASN*     3.1    17.2    +      -       -      +
    195D  PRO*     1.3    77.3    -      -       +      +
    197D  HIS*     1.3    65.8    +      -       -      +
    199D  MET*     3.5    23.6    +      -       +      -
    200D  GLY      3.2    15.6    +      -       -      -
    281D  MET*     3.3    29.4    -      -       -      +
    282D  SER*     3.4    13.9    +      -       -      -
    284D  ILE*     3.7    24.5    -      -       +      -
    285D  GLY*     3.6    18.6    -      -       -      -
     31L  PHE*     4.2    12.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with HIS 197 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191D  TRP*     3.1    65.8    +      +       +      +
    192D  THR*     4.3     9.9    +      -       -      -
    194D  ASN      3.1    10.6    +      -       -      +
    196D  PHE*     1.3    77.9    -      -       -      +
    198D  MET*     1.3    58.0    +      -       -      +
    200D  GLY*     3.2     3.0    +      -       -      +
    201D  VAL*     2.9    46.8    +      -       +      +
    282D  SER*     4.7     2.5    -      -       -      +
    402D  CLA      2.2    67.1    +      +       +      -
    403D  CLA      4.5     7.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 198 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  ILE*     3.9     7.0    -      -       +      -
    176A  ILE*     3.9    15.9    -      -       +      -
    180A  PHE*     3.8    16.2    -      -       +      -
    192D  THR      3.3    21.8    -      -       -      +
    193D  LEU      3.6     5.4    -      -       -      +
    194D  ASN      3.0    12.1    +      -       -      +
    195D  PRO*     3.5    13.9    -      -       +      +
    196D  PHE      3.3     0.4    -      -       -      -
    197D  HIS*     1.3    77.9    -      -       -      +
    199D  MET*     1.3    56.7    +      -       -      +
    201D  VAL*     3.3     3.5    +      -       -      +
    202D  ALA      3.0    21.8    +      -       -      -
    403D  CLA      3.5    40.2    -      -       -      +
    407D  PL9      3.4    15.1    -      -       +      +
     30L  LEU*     3.7    19.3    -      -       +      -
     34L  TYR*     3.3    26.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 199 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    607B  CLA      4.2     6.1    -      -       +      -
    195D  PRO      3.0    18.6    +      -       -      +
    196D  PHE*     3.5    33.4    -      -       +      +
    197D  HIS      3.3     0.4    -      -       -      -
    198D  MET*     1.3    73.0    -      -       -      +
    200D  GLY*     1.3    60.1    +      -       -      +
    202D  ALA*     3.3     3.3    +      -       -      +
    203D  GLY      2.9    24.9    +      -       -      -
    278D  GLY*     3.8     3.2    -      -       -      -
    281D  MET*     3.8    30.1    -      -       +      -
    407D  PL9      3.6    38.6    -      -       +      +
     27L  LEU*     3.8    27.4    -      -       -      -
     30L  LEU*     3.7    15.0    -      -       +      -
     31L  PHE*     3.8    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 200 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    196D  PHE      3.2    10.4    +      -       -      -
    197D  HIS      3.2     8.1    +      -       -      -
    199D  MET*     1.3    75.9    -      -       -      +
    201D  VAL*     1.3    55.2    +      -       -      +
    203D  GLY*     3.2     1.7    +      -       -      -
    204D  VAL*     3.0    33.6    +      -       -      +
    278D  GLY*     3.2    24.2    +      -       -      -
    282D  SER*     4.2     1.8    -      -       -      -
    402D  CLA      3.5    17.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 201 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197D  HIS*     2.9    42.7    +      -       +      +
    198D  MET      3.6     3.6    -      -       -      +
    199D  MET      3.3     0.2    -      -       -      -
    200D  GLY*     1.3    73.8    -      -       -      +
    202D  ALA*     1.3    57.3    +      -       -      +
    204D  VAL      3.3     0.3    +      -       -      -
    205D  LEU*     2.9    52.9    +      -       +      +
    402D  CLA      3.7    30.5    -      -       +      -
    403D  CLA      3.5    44.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 202 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    621B  LHG      3.9     7.0    -      -       +      -
    198D  MET      3.0    11.6    +      -       -      +
    199D  MET      3.3     7.6    +      -       -      +
    201D  VAL*     1.3    77.7    -      -       -      +
    203D  GLY*     1.3    53.4    +      -       -      +
    206D  GLY*     2.8    32.4    +      -       -      -
    403D  CLA      3.4    25.9    -      -       +      +
    407D  PL9      3.6    42.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 203 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199D  MET      2.9    12.6    +      -       -      -
    200D  GLY      3.2     3.6    +      -       -      -
    202D  ALA*     1.3    78.2    -      -       -      +
    204D  VAL*     1.3    55.8    +      -       -      +
    207D  GLY*     2.8    21.7    +      -       -      -
    274D  VAL*     3.6    22.5    -      -       -      +
    275D  PRO*     3.3    20.0    -      -       -      +
    278D  GLY*     4.0     4.5    -      -       -      -
    407D  PL9      3.8    10.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 204 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205A  VAL*     3.7    27.1    -      -       +      +
    206A  PHE*     4.2    11.9    -      -       +      -
    209A  ALA*     3.7     9.6    -      -       +      +
    200D  GLY      3.0    19.5    +      -       -      +
    201D  VAL      3.9     2.7    -      -       -      +
    203D  GLY*     1.3    74.9    -      -       -      +
    205D  LEU*     1.3    59.4    -      -       -      +
    207D  GLY*     3.3     0.9    +      -       -      -
    208D  ALA*     2.9    28.1    +      -       -      +
    279D  LEU*     3.6    28.5    -      -       +      -
    402D  CLA      3.8    38.4    -      -       +      -
    404D  PHO      4.5     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 205 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205A  VAL*     3.9    21.3    -      -       +      -
   1005A  CLA      3.7    27.4    -      -       +      -
   1007A  PHO      3.7    39.7    -      -       +      +
    201D  VAL*     2.9    36.6    +      -       +      +
    204D  VAL*     1.3    72.8    -      -       -      +
    206D  GLY*     1.3    60.5    +      -       -      +
    208D  ALA*     3.4     4.4    +      -       -      +
    209D  LEU*     2.9    29.1    +      -       -      +
    402D  CLA      3.6    28.5    -      -       +      -
    403D  CLA      3.7    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 206 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    202D  ALA      2.8    20.4    +      -       -      -
    205D  LEU*     1.3    76.7    -      -       -      +
    207D  GLY*     1.3    56.4    +      -       -      +
    209D  LEU*     3.4     6.0    +      -       -      +
    210D  LEU*     2.9    33.7    +      -       -      +
    274D  VAL*     4.0     7.4    -      -       -      -
    403D  CLA      3.5    13.2    -      -       -      -
    407D  PL9      4.1    16.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 207 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208A  GLY      4.0     2.0    -      -       -      -
    209A  ALA*     4.1     5.4    -      -       -      -
    212A  CYS*     3.2    32.8    -      -       -      +
    203D  GLY      2.8    21.6    +      -       -      -
    204D  VAL      3.7     1.1    -      -       -      -
    205D  LEU      3.3     0.2    -      -       -      -
    206D  GLY*     1.3    73.3    -      -       -      +
    208D  ALA*     1.3    58.4    +      -       -      +
    210D  LEU*     3.2     1.3    +      -       -      -
    211D  CYS*     2.9    24.4    +      -       -      +
    274D  VAL*     3.8     5.9    -      -       -      +
    275D  PRO*     4.4     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 208 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204A  GLY      4.4     1.3    -      -       -      +
    205A  VAL*     3.8    29.2    -      -       +      +
    208A  GLY*     3.8    15.5    -      -       -      -
    209A  ALA      3.9     1.4    -      -       -      +
    279A  PRO*     3.9     2.4    -      -       +      +
   1007A  PHO      3.6    22.3    -      -       +      +
    204D  VAL      2.9    16.7    +      -       -      +
    205D  LEU      3.7     5.2    -      -       -      +
    207D  GLY*     1.3    74.0    -      -       -      +
    209D  LEU*     1.3    62.0    +      -       -      +
    211D  CYS*     3.4     2.4    +      -       -      +
    212D  ALA*     3.0    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 209 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1007A  PHO      3.5    71.3    -      -       +      +
    205D  LEU      2.9    17.8    +      -       -      +
    206D  GLY      3.4     5.4    -      -       -      +
    207D  GLY      3.3     0.2    -      -       -      -
    208D  ALA*     1.3    76.7    -      -       -      +
    210D  LEU*     1.3    61.6    +      -       -      +
    212D  ALA*     3.3     2.4    +      -       -      +
    213D  ILE*     2.9    45.3    +      -       +      +
    403D  CLA      4.0    25.1    -      -       +      -
    407D  PL9      3.9    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 210 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  CYS*     3.7    16.8    -      -       -      -
    206D  GLY      2.9    20.5    +      -       -      +
    207D  GLY      3.2     4.5    +      -       -      +
    209D  LEU*     1.3    73.0    -      -       +      +
    211D  CYS*     1.3    64.4    +      -       -      +
    213D  ILE*     3.7     7.7    -      -       +      +
    214D  HIS*     3.0    30.2    +      -       +      +
    261D  PHE*     4.6     8.1    -      -       +      -
    267D  LEU*     6.5     0.2    -      -       +      -
    270D  PHE*     3.9    22.4    -      -       +      +
    271D  MET*     3.9    13.6    -      -       +      +
    274D  VAL*     3.9    33.2    -      -       +      -
    407D  PL9      4.0    40.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 211 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208A  GLY*     3.3    36.1    -      -       -      +
    211A  PHE*     3.9    11.7    -      -       -      -
    212A  CYS*     4.0     4.7    -      -       +      -
    275A  LEU*     3.2    58.5    -      -       -      +
    279A  PRO*     4.1     4.7    -      -       +      -
    207D  GLY      2.9     8.8    +      -       -      +
    208D  ALA      3.4     6.1    -      -       -      +
    210D  LEU*     1.3    76.2    -      -       -      +
    212D  ALA*     1.3    61.6    +      -       -      +
    214D  HIS*     4.2     0.7    -      -       -      +
    215D  GLY      3.1    18.7    +      -       -      -
    271D  MET*     4.2    11.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 212 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  ALA*     4.6     0.3    -      -       -      +
    275A  LEU      3.7     9.6    +      -       -      -
    276A  ALA*     3.9     5.9    -      -       -      +
    279A  PRO*     3.7    12.8    -      -       +      +
    280A  VAL*     3.9    16.6    -      -       +      -
   1007A  PHO      3.9    26.2    -      -       +      -
    208D  ALA      3.0    17.2    +      -       -      +
    209D  LEU      3.8     2.7    -      -       -      +
    211D  CYS*     1.3    76.7    -      -       -      +
    213D  ILE*     1.3    56.6    +      -       -      +
    216D  ALA*     2.9    32.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 213 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  ILE*     5.5     0.7    -      -       +      -
   1007A  PHO      3.2    57.9    -      -       +      +
    209D  LEU*     2.9    31.6    +      -       +      +
    210D  LEU*     3.7    15.5    -      -       +      +
    212D  ALA*     1.3    71.0    -      -       -      +
    214D  HIS*     1.3    64.0    +      -       +      +
    216D  ALA*     3.9     2.9    -      -       +      +
    217D  THR*     2.7    37.4    +      -       -      +
    253D  TRP*     3.4    35.7    -      -       +      -
    407D  PL9      4.0    24.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 214 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215A  HIS*     3.5    15.9    -      +       -      -
    272A  HIS*     3.2    16.3    +      +       -      -
    275A  LEU*     4.4     1.8    -      -       +      -
   1002A  FE2      2.1    31.4    -      -       -      -
    210D  LEU*     3.0    21.0    +      -       +      +
    211D  CYS      4.2     0.2    -      -       -      +
    213D  ILE*     1.3    76.3    -      -       +      +
    215D  GLY*     1.3    67.0    +      -       -      +
    217D  THR      3.3     0.5    +      -       -      -
    218D  VAL*     3.0    37.6    +      -       +      +
    244D  TYR*     4.0     5.2    -      -       -      -
    267D  LEU*     3.6    22.6    -      -       +      +
    268D  HIS*     3.1     3.7    +      +       -      -
    271D  MET*     3.8    17.3    -      -       +      -
    401D  BCT      3.3    12.6    -      -       -      -
    407D  PL9      2.8    28.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 215 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  HIS*     3.1    30.5    -      -       -      +
    275A  LEU*     4.1     5.1    -      -       -      +
    276A  ALA*     3.7     6.7    -      -       -      -
    211D  CYS      3.1    16.8    +      -       -      -
    214D  HIS*     1.3    78.9    -      -       -      +
    216D  ALA*     1.3    61.1    +      -       -      +
    218D  VAL*     3.6     2.1    +      -       -      +
    219D  GLU*     3.1    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 216 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  ILE*     4.0    16.2    -      -       +      -
    146A  ALA*     3.7    24.7    -      -       +      -
    276A  ALA*     3.5     6.9    -      -       -      +
    212D  ALA      2.9    19.8    +      -       -      +
    213D  ILE*     4.0     4.0    -      -       -      +
    215D  GLY*     1.3    75.9    -      -       -      +
    217D  THR*     1.3    57.3    +      -       -      +
    219D  GLU      3.5     0.5    +      -       -      -
    220D  ASN*     2.7    39.5    +      -       -      +
    411D  LHG      4.2    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 217 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  ILE*     3.9     9.1    -      -       +      +
    213D  ILE      2.7    24.5    +      -       -      -
    214D  HIS      3.3     0.4    +      -       -      -
    216D  ALA*     1.3    73.6    -      -       -      +
    218D  VAL*     1.3    59.3    +      -       -      +
    220D  ASN      3.2     1.7    +      -       -      -
    221D  THR*     2.7    36.5    +      -       +      +
    244D  TYR*     5.7     0.2    -      -       +      -
    249D  ALA*     3.7    20.2    -      -       +      -
    252D  PHE*     6.0     0.2    -      -       +      -
    253D  TRP*     2.8    37.2    +      -       -      +
    407D  PL9      3.3    35.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 218 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268A  SER      5.1     0.7    -      -       -      +
    269A  ARG*     5.5     0.4    -      -       -      -
    272A  HIS*     3.5    44.4    -      -       +      +
    214D  HIS*     3.0    36.5    +      -       +      +
    215D  GLY      3.9     1.1    -      -       -      +
    217D  THR*     1.3    76.5    -      -       -      +
    219D  GLU*     1.3    64.0    +      -       -      +
    220D  ASN      3.2     1.0    +      -       -      -
    221D  THR*     3.3    15.0    +      -       -      -
    222D  LEU*     3.3    24.3    +      -       +      +
    243D  THR*     4.9     4.5    -      -       +      -
    244D  TYR*     3.6    40.1    -      -       +      +
    407D  PL9      4.9     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 219 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ARG*     2.8    33.6    +      -       -      -
    269A  ARG*     3.0    40.0    -      -       -      +
    272A  HIS*     4.1     1.3    -      -       +      -
    273A  PHE*     3.7    22.1    -      -       +      +
    215D  GLY      3.1    20.5    +      -       -      +
    216D  ALA      3.9     1.8    -      -       -      +
    217D  THR      3.3     0.2    -      -       -      -
    218D  VAL*     1.3    78.7    -      -       -      +
    220D  ASN*     1.3    59.6    +      -       -      +
    221D  THR      3.6     0.2    -      -       -      -
    222D  LEU*     3.6    19.4    -      -       -      +
    231D  THR*     4.7     0.3    +      -       -      -
    232D  PHE*     3.8     7.4    -      -       -      -
    411D  LHG      3.5    49.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 220 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  MET*     3.3    11.5    -      -       +      +
    140A  ARG*     3.0    48.5    +      -       -      +
    141A  PRO      3.3     0.5    -      -       -      -
    142A  TRP*     2.7    38.2    +      -       -      +
    143A  ILE*     3.7    26.7    -      -       +      +
    216D  ALA*     2.7    29.7    +      -       -      +
    217D  THR      3.6     1.6    -      -       -      +
    218D  VAL      3.2     0.4    -      -       -      -
    219D  GLU*     1.3    76.0    -      -       -      +
    221D  THR*     1.3    60.1    +      -       -      +
    222D  LEU      3.6     1.6    -      -       -      -
    411D  LHG      2.9    24.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 221 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  MET*     3.8    24.9    -      -       +      -
    459C  ILE*     3.8    15.9    -      -       -      +
    217D  THR*     2.7    24.6    +      -       +      +
    218D  VAL      3.3     4.5    +      -       -      -
    220D  ASN*     1.3    81.4    -      -       -      +
    222D  LEU*     1.3    66.4    +      -       -      +
    223D  PHE      3.6     0.2    +      -       -      -
    244D  TYR*     3.5    19.8    -      -       -      -
    245D  SER      2.9    30.0    +      -       -      -
    248D  THR*     4.3     1.3    -      -       +      -
    249D  ALA*     3.8    28.6    -      -       +      +
----------------------------------------------------------
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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