Contacts of the helix formed by residues 247 - 274 (chain B) in PDB entry 5FLZ


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 SER 247 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246B  ILE*     1.4    90.7    -      -       -      +
    248B  PRO*     1.4    68.8    -      -       -      +
    249B  MET*     3.5    15.9    -      -       -      -
    250B  LYS*     3.0    15.2    +      -       -      +
    251B  LYS*     3.0    22.5    +      -       -      +
    309B  GLY*     4.4     2.3    -      -       -      -
    312B  PHE*     3.8    13.3    -      -       -      -
    359B  TYR*     3.3    10.2    -      -       -      +
    361B  GLU*     3.3    21.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  SER*     1.4    81.8    -      -       -      +
    249B  MET*     1.3    66.0    +      -       +      +
    251B  LYS*     3.4    14.4    -      -       +      +
    252B  ALA*     3.1    18.4    +      -       -      +
    341B  LEU*     3.5    33.1    -      -       +      +
    345B  TYR*     3.7    21.1    -      -       +      +
    358B  THR*     4.1    13.0    -      -       +      +
    359B  TYR*     4.1     6.1    -      -       +      -
    361B  GLU*     3.6    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  SER*     3.1     7.6    -      -       -      +
    248B  PRO*     1.3    76.9    -      -       +      +
    250B  LYS*     1.3    61.5    +      -       -      +
    252B  ALA*     3.3     9.0    +      -       -      +
    253B  LEU*     3.4     6.9    +      -       -      +
    309B  GLY      5.2     3.6    -      -       -      +
    312B  PHE*     4.2    19.1    -      -       +      -
    313B  LEU*     6.1     0.7    -      -       -      +
    338B  MET*     3.4    38.2    -      -       +      +
    341B  LEU*     3.5    25.8    -      -       +      -
    342B  TYR*     3.5    40.6    -      -       +      +
    345B  TYR*     4.1    17.5    -      -       +      +
    361B  GLU*     3.4    37.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 250 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241B  PHE*     2.8    59.0    +      -       +      +
    244B  LEU*     4.5     3.4    -      -       -      +
    245B  ASN*     3.7    19.4    +      -       -      +
    246B  ILE*     3.6    47.3    +      -       +      +
    247B  SER*     3.0    14.9    +      -       -      +
    249B  MET*     1.3    77.2    -      -       -      +
    251B  LYS*     1.4    62.3    +      -       -      +
    253B  LEU*     3.0    30.3    +      -       +      +
    254B  ILE*     3.1    24.1    +      -       +      +
    304B  LEU*     5.0    10.8    -      -       +      -
    312B  PHE*     4.5     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 251 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244B  LEU*     5.9     5.1    -      -       -      +
    247B  SER      3.0     7.8    +      -       -      +
    248B  PRO*     3.4    20.0    -      -       +      +
    250B  LYS*     1.4    77.3    -      -       -      +
    252B  ALA*     1.3    62.7    +      -       -      +
    254B  ILE*     3.3    19.2    +      -       +      +
    255B  ILE*     3.0    48.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 252 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248B  PRO      3.1     9.4    +      -       -      +
    249B  MET      3.4    11.4    -      -       -      +
    251B  LYS*     1.3    80.1    -      -       -      +
    253B  LEU*     1.4    58.3    +      -       -      +
    255B  ILE*     3.4    11.5    +      -       -      +
    256B  GLU*     3.1    31.8    +      -       -      +
    337B  SER*     3.4    28.2    +      -       -      +
    338B  MET*     3.6    11.9    -      -       -      -
    341B  LEU*     4.5     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 253 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  MET*     3.5    13.2    -      -       +      +
    250B  LYS*     3.0    16.8    +      -       +      +
    252B  ALA*     1.4    76.4    -      -       -      +
    254B  ILE*     1.4    56.8    +      -       -      +
    256B  GLU*     3.1     4.1    +      -       -      -
    257B  ILE*     3.0    28.8    +      -       -      +
    297B  TYR*     3.5    27.2    +      -       +      +
    300B  PHE*     3.8    25.4    -      -       +      -
    304B  LEU*     3.4    33.7    -      -       +      -
    312B  PHE*     5.7     4.9    -      -       +      -
    316B  LEU*     6.1     0.2    -      -       +      -
    334B  LEU*     4.3    18.2    -      -       +      -
    338B  MET*     3.7    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 254 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238B  VAL*     5.5     6.5    -      -       +      +
    241B  PHE*     4.0    41.1    -      -       +      +
    242B  ARG*     4.2    26.9    -      -       +      +
    244B  LEU*     6.4     1.3    -      -       +      -
    250B  LYS*     3.1    35.6    +      -       +      +
    251B  LYS*     3.3    18.8    +      -       +      +
    253B  LEU*     1.4    69.4    -      -       -      +
    255B  ILE*     1.4    58.1    +      -       +      +
    257B  ILE*     3.1    12.3    -      -       +      +
    258B  SER*     2.8    49.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 255 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  LYS*     3.0    41.5    +      -       +      +
    252B  ALA*     3.6    11.9    -      -       -      +
    253B  LEU      3.3     0.2    -      -       -      -
    254B  ILE*     1.4    76.6    -      -       +      +
    256B  GLU*     1.4    56.3    +      -       +      +
    258B  SER*     3.4     7.2    +      -       -      -
    259B  GLU*     3.1    27.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 256 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252B  ALA      3.1    16.7    +      -       -      +
    253B  LEU      3.1     7.9    +      -       -      +
    255B  ILE*     1.4    71.8    -      -       +      +
    257B  ILE*     1.3    65.3    +      -       -      +
    259B  GLU*     3.3    12.1    +      -       -      +
    260B  GLU*     3.2    26.3    +      -       -      +
    297B  TYR*     4.4     5.8    -      -       +      +
    330B  ILE*     5.3     1.9    -      -       -      +
    333B  ASN*     3.1    43.9    +      -       -      +
    334B  LEU*     3.6    30.6    +      -       +      +
    337B  SER*     4.2    10.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 257 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234B  LEU*     3.8    28.7    -      -       +      +
    237B  LYS*     5.7     5.6    -      -       +      -
    238B  VAL*     4.3    24.2    -      -       +      -
    241B  PHE*     6.2     3.1    -      -       +      -
    253B  LEU      3.0    16.5    +      -       -      +
    254B  ILE*     3.1    28.3    -      -       +      +
    256B  GLU*     1.3    74.5    -      -       -      +
    258B  SER*     1.4    57.1    +      -       -      +
    260B  GLU*     2.8    29.0    +      -       +      -
    261B  LEU*     3.1    25.2    +      -       +      +
    294B  LEU*     5.6     3.6    -      -       +      -
    297B  TYR*     4.2    31.8    +      -       +      -
    301B  THR*     5.8     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 258 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238B  VAL*     5.5     4.5    -      -       -      +
    242B  ARG*     3.7    22.4    +      -       -      -
    254B  ILE*     2.8    28.2    +      -       -      +
    255B  ILE*     3.5     8.3    -      -       -      -
    256B  GLU      3.3     0.2    -      -       -      -
    257B  ILE*     1.4    76.5    -      -       -      +
    259B  GLU*     1.4    58.2    +      -       -      +
    261B  LEU*     3.5    20.2    +      -       -      +
    262B  GLN*     3.1    24.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 259 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255B  ILE*     3.1    13.5    +      -       +      +
    256B  GLU*     3.4    15.9    -      -       -      +
    258B  SER*     1.4    73.5    -      -       -      +
    260B  GLU*     1.4    78.6    +      -       -      +
    262B  GLN*     3.0    32.9    +      -       +      +
    263B  ASN*     3.9     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 260 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256B  GLU*     3.2    17.4    +      -       -      +
    257B  ILE*     2.8    13.5    +      -       +      +
    259B  GLU*     1.4    88.5    -      -       -      +
    261B  LEU*     1.3    69.0    -      -       +      +
    263B  ASN*     2.9    43.4    +      -       -      +
    264B  TYR*     3.8     0.5    +      -       -      +
    293B  ARG*     4.2    11.4    -      -       -      +
    294B  LEU*     4.5    20.5    -      -       +      +
    297B  TYR*     5.5     9.1    -      -       +      -
    330B  ILE*     3.8    27.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 261 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231B  TYR*     5.1     8.6    +      -       +      +
    234B  LEU*     4.2    25.4    -      -       +      -
    238B  VAL*     4.9    18.6    -      -       +      -
    257B  ILE*     3.1    30.3    +      -       +      +
    258B  SER*     3.8    16.6    -      -       -      +
    259B  GLU      3.3     0.6    -      -       -      -
    260B  GLU*     1.3    77.9    -      -       -      +
    262B  GLN*     1.4    66.1    +      -       -      +
    264B  TYR*     3.0    21.2    +      -       +      +
    265B  THR*     3.0    15.7    +      -       -      +
    294B  LEU*     5.1     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 262 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  SER*     3.1    22.2    +      -       -      +
    259B  GLU*     3.0    31.9    +      -       +      +
    260B  GLU      3.0     0.6    -      -       -      -
    261B  LEU*     1.4    81.6    -      -       -      +
    263B  ASN*     1.3    61.3    +      -       -      +
    265B  THR*     3.3    11.2    +      -       -      -
    266B  ALA*     3.2    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 263 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259B  GLU*     3.9     2.7    +      -       -      +
    260B  GLU*     2.9    49.7    +      -       -      +
    262B  GLN*     1.3    74.4    -      -       -      +
    264B  TYR*     1.3    79.0    +      -       -      +
    266B  ALA*     3.1    10.7    -      -       -      +
    267B  PHE*     3.0    34.5    +      -       +      -
    290B  ASN*     3.2    17.3    -      -       -      +
    293B  ARG*     3.8    28.5    +      -       -      +
    294B  LEU*     5.7     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 264 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  LEU*     3.7    36.9    +      -       +      +
    193B  LEU*     4.7     1.8    -      -       +      -
    227B  ALA*     5.8     1.6    -      -       -      +
    231B  TYR*     3.3    45.7    -      +       +      +
    260B  GLU      4.7     0.2    -      -       -      +
    261B  LEU*     3.0    16.6    +      -       -      +
    263B  ASN*     1.3    82.6    +      -       -      +
    265B  THR*     1.4    59.3    +      -       -      +
    267B  PHE*     2.9     7.0    +      -       -      +
    268B  VAL*     2.9    41.7    +      -       +      -
    287B  ILE*     3.6    29.5    -      -       +      +
    290B  ASN*     3.3    26.5    -      -       +      -
    294B  LEU*     4.6    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 265 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193B  LEU*     5.9     4.3    -      -       +      +
    231B  TYR*     5.3     2.3    +      -       -      -
    261B  LEU      3.0    16.1    +      -       -      -
    262B  GLN*     3.4    13.2    +      -       -      -
    263B  ASN      3.2     0.4    -      -       -      -
    264B  TYR*     1.4    75.4    -      -       -      +
    266B  ALA*     1.3    62.9    +      -       -      +
    268B  VAL*     3.0    22.0    +      -       +      +
    269B  ASN*     2.9    20.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 266 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  GLN      3.2     9.4    +      -       -      +
    263B  ASN*     3.1    14.8    +      -       -      +
    265B  THR*     1.3    77.3    -      -       -      +
    267B  PHE*     1.3    64.9    +      -       +      +
    269B  ASN*     3.1    13.2    -      -       -      +
    270B  ASN*     3.0    35.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 267 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263B  ASN*     3.0    30.3    +      -       +      -
    264B  TYR      2.9     7.4    +      -       -      +
    266B  ALA*     1.3    76.8    -      -       +      +
    268B  VAL*     1.3    60.8    +      -       -      +
    270B  ASN*     3.0    19.5    +      -       +      +
    271B  LEU*     2.9    31.2    +      -       +      +
    286B  GLU*     5.0     6.3    -      -       +      -
    287B  ILE*     4.3    19.5    -      -       +      -
    289B  GLU*     4.1    13.7    -      -       -      -
    290B  ASN*     3.0    42.6    -      -       -      -
    293B  ARG*     3.8    16.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 268 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  SER*     5.4     9.6    -      -       -      +
    192B  LEU*     6.3     0.2    -      -       +      -
    193B  LEU*     4.0    33.2    -      -       +      -
    264B  TYR*     2.9    41.1    +      -       +      +
    265B  THR*     3.0    12.5    +      -       +      +
    267B  PHE*     1.3    73.7    -      -       -      +
    269B  ASN*     1.4    64.9    +      -       -      +
    271B  LEU*     3.2    13.8    +      -       +      +
    272B  VAL*     3.1    30.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 269 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265B  THR*     2.9    30.6    +      -       -      +
    266B  ALA*     3.1    14.3    +      -       -      +
    268B  VAL*     1.4    75.5    -      -       -      +
    270B  ASN*     1.4    73.4    +      -       -      +
    272B  VAL*     3.2     9.2    +      -       -      +
    273B  SER*     2.7    41.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 270 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266B  ALA*     3.0    27.2    +      -       -      +
    267B  PHE*     3.0    24.8    +      -       +      +
    269B  ASN*     1.4    90.0    +      -       -      +
    271B  LEU*     1.3    63.2    +      -       +      +
    273B  SER*     3.1     9.3    +      -       -      -
    274B  SER*     3.0    22.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 271 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  LEU*     5.3     4.7    -      -       +      -
    264B  TYR*     6.5     0.2    -      -       +      -
    267B  PHE*     2.9    23.7    +      -       +      +
    268B  VAL*     3.7    16.4    -      -       +      +
    270B  ASN*     1.3    72.7    -      -       +      +
    272B  VAL*     1.4    64.5    +      -       +      +
    274B  SER*     3.2    25.7    +      -       -      +
    275B  GLY      4.4     0.2    +      -       -      -
    276B  THR      5.3     0.3    -      -       -      +
    278B  VAL*     4.2    23.8    -      -       +      +
    283B  LEU*     3.5    33.9    -      -       +      -
    286B  GLU*     4.2    28.5    -      -       +      -
    287B  ILE*     4.8    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 272 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  SER*     6.0     5.6    -      -       -      -
    268B  VAL*     3.1    24.4    +      -       +      +
    269B  ASN*     3.6     8.5    -      -       -      +
    271B  LEU*     1.4    78.3    -      -       +      +
    273B  SER*     1.4    60.1    +      -       -      +
    274B  SER      3.2     1.0    +      -       -      -
    275B  GLY*     3.3    12.6    +      -       -      -
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Residues in contact with SER 273 (chain B). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    269B  ASN*     2.7    25.1    +      -       -      +
    270B  ASN*     3.1    12.8    +      -       -      -
    272B  VAL*     1.4    68.3    -      -       -      +
    274B  SER*     1.4    66.1    -      -       -      +
    275B  GLY*     3.2     2.6    +      -       -      -
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Residues in contact with SER 274 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    270B  ASN      3.0    14.3    +      -       -      -
    271B  LEU*     3.2    21.7    +      -       -      +
    272B  VAL      3.2     0.2    -      -       -      -
    273B  SER*     1.4    74.7    -      -       -      +
    275B  GLY*     1.4    56.9    +      -       -      +
    276B  THR*     3.1    28.6    +      -       -      +
    278B  VAL*     4.3    10.0    -      -       -      +
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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