Contacts of the helix formed by residues 125 - 148 (chain C) in PDB entry 3FZ7


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 GLY 125 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316B  ASN*     5.1     0.2    +      -       -      -
    318B  SER      5.0     0.4    -      -       -      -
    123C  THR*     2.8    20.2    +      -       -      -
    124C  ILE*     1.3    80.2    -      -       -      +
    126C  SER*     1.3    65.9    +      -       -      -
    127C  SER*     3.2     2.6    +      -       -      -
    128C  GLU*     3.7     3.8    +      -       -      +
    129C  ALA*     3.4     9.4    +      -       -      +
    275C  HIS*     3.8     8.3    -      -       -      -
    284C  CYS      4.2     0.2    -      -       -      -
    285C  GLY*     3.8    11.6    -      -       -      -
    467C  PO4      3.7    15.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  GLY*     1.3    71.1    -      -       -      -
    127C  SER*     1.3    56.5    +      -       -      +
    129C  ALA*     3.2     7.8    +      -       -      +
    130C  CYS*     2.7    47.4    +      -       -      -
    165C  CYS*     4.9     2.9    -      -       -      -
    243C  ASP*     4.5     2.0    +      -       -      -
    245C  ALA*     3.6    21.1    +      -       -      +
    271C  SER*     4.9     0.7    -      -       -      -
    272C  ALA*     3.6    15.4    +      -       -      -
    273C  SER*     2.6    22.1    +      -       -      -
    285C  GLY*     4.5     1.0    -      -       -      -
    467C  PO4      3.0    23.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315B  ILE      2.7    26.0    +      -       -      -
    316B  ASN*     4.0     2.0    -      -       -      -
    317B  PHE*     3.9    20.0    -      -       -      -
    125C  GLY*     3.2     0.6    -      -       -      -
    126C  SER*     1.3    77.3    -      -       -      +
    128C  GLU*     1.3    62.8    +      -       -      +
    130C  CYS*     3.3     3.1    +      -       -      +
    131C  MET*     3.0    34.6    +      -       -      +
    165C  CYS*     3.9    21.0    -      -       -      +
    168C  LYS*     4.1     6.2    +      -       -      -
    467C  PO4      2.8    17.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315B  ILE*     4.5     5.0    +      -       +      -
    316B  ASN*     3.9    15.3    +      -       -      +
    122C  ASN      5.4     0.4    -      -       -      -
    123C  THR*     3.3    21.7    -      -       +      -
    124C  ILE      3.0    20.6    +      -       -      +
    125C  GLY      3.7     4.0    +      -       -      +
    126C  SER      3.4     0.4    -      -       -      -
    127C  SER*     1.3    76.7    -      -       -      +
    129C  ALA*     1.3    63.8    +      -       -      +
    131C  MET*     3.0    21.7    +      -       -      +
    132C  LEU*     3.0    22.7    +      -       +      +
    314C  ALA*     3.6     9.2    -      -       -      +
    315C  ILE*     2.8    38.5    +      -       +      -
    316C  ASN*     2.9    33.4    +      -       -      +
    319C  ARG*     4.7     2.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  THR*     3.7    15.6    -      -       -      +
    125C  GLY      3.4    13.6    +      -       -      +
    126C  SER*     3.2    11.2    +      -       -      +
    128C  GLU*     1.3    80.0    -      -       -      +
    130C  CYS*     1.3    60.2    +      -       -      +
    132C  LEU*     3.5     4.0    +      -       -      +
    133C  GLY*     3.0    19.9    +      -       -      -
    241C  HIS*     4.4     0.2    -      -       -      -
    271C  SER*     3.7    14.0    -      -       -      -
    286C  TRP      3.7    23.1    -      -       -      +
    287C  VAL*     3.9    17.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126C  SER*     2.7    28.3    +      -       -      +
    127C  SER      3.5     3.6    -      -       -      +
    129C  ALA*     1.3    71.3    -      -       -      +
    131C  MET*     1.3    56.1    +      -       -      +
    133C  GLY*     3.0     1.7    +      -       -      -
    134C  GLY*     2.6    35.2    +      -       -      -
    165C  CYS*     3.1    38.1    -      -       +      +
    166C  TRP*     3.5    37.3    -      -       +      -
    169C  PHE*     5.4     0.7    -      -       +      -
    241C  HIS*     4.7     0.9    -      -       -      -
    243C  ASP*     4.0     8.3    -      -       -      -
    271C  SER*     3.8    15.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 131 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315B  ILE*     3.4    35.9    -      -       +      +
    127C  SER*     3.0    23.8    +      -       -      +
    128C  GLU*     3.0     8.5    +      -       -      +
    130C  CYS*     1.3    76.2    -      -       -      +
    132C  LEU*     1.3    54.3    +      -       -      +
    135C  MET*     2.7    40.0    +      -       -      +
    165C  CYS*     4.4     6.3    -      -       +      +
    168C  LYS*     4.3    22.0    -      -       +      -
    169C  PHE*     4.2    22.7    -      -       -      -
    172C  TYR*     4.8     1.6    -      -       +      -
    173C  TRP*     3.5    29.8    -      -       +      -
    315C  ILE*     3.5    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121C  THR*     3.9    18.4    -      -       +      -
    123C  THR*     3.9    19.3    -      -       +      -
    128C  GLU*     3.0    20.1    +      -       +      +
    129C  ALA      3.6     7.0    -      -       -      +
    131C  MET*     1.3    77.6    -      -       -      +
    133C  GLY*     1.3    56.4    +      -       -      +
    135C  MET*     3.9     9.0    -      -       +      -
    136C  ALA*     3.1    24.9    +      -       -      +
    287C  VAL*     4.1     2.7    -      -       +      -
    289C  TRP*     3.7     8.6    -      -       +      -
    313C  PHE*     3.3    73.3    -      -       +      +
    314C  ALA*     4.5     1.3    -      -       -      -
    315C  ILE*     4.2    21.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 133 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  ALA      3.0    11.0    +      -       -      -
    130C  CYS      3.0     6.5    +      -       -      -
    132C  LEU*     1.3    74.4    -      -       -      +
    134C  GLY*     1.3    54.2    +      -       -      +
    136C  ALA*     3.3     3.5    +      -       -      +
    137C  MET*     2.8    43.1    +      -       -      +
    140C  ARG*     5.2     0.2    +      -       -      -
    166C  TRP*     4.9     0.2    -      -       -      -
    241C  HIS*     4.0    20.9    -      -       -      -
    269C  SER*     4.3     6.7    +      -       -      -
    287C  VAL*     4.8     1.1    -      -       -      -
    289C  TRP*     4.4     7.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  CYS      2.6    19.9    +      -       -      -
    133C  GLY*     1.3    69.0    -      -       -      +
    135C  MET*     1.3    58.5    +      -       -      +
    137C  MET*     3.2    11.0    -      -       -      +
    138C  LYS*     2.9    25.5    +      -       -      +
    166C  TRP*     4.1    10.6    -      -       -      -
    169C  PHE*     3.3    33.9    -      -       -      -
    203C  ILE*     3.9     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 135 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172B  TYR*     3.4    48.5    -      -       +      -
    131C  MET      2.7    29.4    +      -       -      +
    132C  LEU*     3.9    14.6    -      -       +      +
    134C  GLY*     1.3    70.9    -      -       -      -
    136C  ALA*     1.3    57.8    +      -       -      +
    138C  LYS*     3.2     5.6    +      -       -      +
    139C  TRP*     2.9    40.0    +      -       +      -
    169C  PHE*     3.4     4.2    -      -       -      -
    173C  TRP*     3.5    40.6    -      -       +      +
    299C  LEU*     4.2     7.0    -      -       +      -
    313C  PHE*     3.7    27.8    -      -       +      -
    315C  ILE*     4.3     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 136 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132C  LEU      3.1    19.8    +      -       -      +
    133C  GLY      3.6     2.2    -      -       -      +
    135C  MET*     1.3    74.0    -      -       -      +
    137C  MET*     1.3    66.9    +      -       -      +
    139C  TRP*     3.2     1.4    +      -       -      +
    140C  ARG*     2.9    36.2    +      -       -      +
    289C  TRP*     3.4    27.4    -      -       +      +
    295C  LEU*     4.4     1.8    -      -       +      -
    296C  PRO*     4.1    13.0    -      -       +      -
    299C  LEU*     3.8    15.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 137 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  GLY      2.8    15.5    +      -       -      +
    134C  GLY*     3.2    24.0    -      -       -      +
    136C  ALA*     1.3    72.7    -      -       -      +
    138C  LYS*     1.3    64.2    +      -       -      +
    140C  ARG*     3.0    28.2    +      -       -      +
    141C  TRP*     2.9    23.9    +      -       -      +
    157C  LEU*     3.8    11.9    -      -       +      -
    166C  TRP*     4.2     3.4    -      -       +      -
    203C  ILE*     3.8    14.8    -      -       +      +
    204C  GLY*     3.8    31.4    -      -       -      -
    206C  VAL*     3.6    21.5    -      -       +      -
    239C  ASP      5.1     0.7    -      -       -      +
    240C  MET      4.7     1.3    -      -       -      -
    241C  HIS*     3.4    37.7    -      -       +      -
    269C  SER*     5.5     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 138 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174B  ASP*     3.8     9.1    +      -       -      -
    134C  GLY      2.9    15.1    +      -       -      +
    135C  MET*     3.4    11.7    -      -       -      +
    137C  MET*     1.3    71.9    -      -       -      +
    139C  TRP*     1.3    65.6    +      -       +      +
    141C  TRP*     3.4     7.3    +      -       +      +
    142C  ARG*     2.8    68.2    +      -       +      +
    152C  THR      5.9     0.9    -      -       -      -
    155C  PRO*     4.7    13.7    -      -       +      -
    169C  PHE*     4.8     2.0    -      -       +      -
    173C  TRP*     3.0    38.2    +      -       +      +
    174C  ASP*     5.0     4.0    +      -       -      +
    175C  VAL*     4.1    17.5    -      -       +      -
    203C  ILE*     3.7    19.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 139 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171B  ARG*     3.2    34.4    -      -       +      +
    172B  TYR*     3.8    19.3    -      -       -      -
    174B  ASP*     4.0     5.2    -      -       -      -
    135C  MET*     2.9    41.3    +      -       +      +
    136C  ALA      3.7     0.2    -      -       -      +
    137C  MET      3.2     0.2    -      -       -      -
    138C  LYS*     1.3    90.4    -      -       +      +
    140C  ARG*     1.3    65.7    +      -       -      +
    142C  ARG*     3.2    40.3    +      -       +      +
    143C  LYS*     3.0    28.4    +      -       +      +
    173C  TRP*     5.1     1.1    -      +       -      -
    296C  PRO*     3.6    21.1    -      -       +      -
    298C  GLU*     3.8    40.1    -      -       +      +
    299C  LEU*     3.8    25.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 140 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  GLY      5.2     0.2    +      -       -      -
    136C  ALA*     2.9    31.4    +      -       -      +
    137C  MET*     3.5    34.8    -      -       -      +
    139C  TRP*     1.3    72.7    -      -       -      +
    141C  TRP*     1.3    64.0    +      -       -      +
    143C  LYS*     3.1     7.9    +      -       -      +
    144C  ARG*     3.0    23.0    +      -       -      +
    203C  ILE      5.2     1.8    +      -       -      -
    239C  ASP*     4.2    18.9    +      -       -      +
    240C  MET      4.8     2.4    +      -       -      -
    268C  LYS*     3.6    36.9    -      -       -      +
    269C  SER*     5.0     3.6    +      -       -      -
    289C  TRP*     4.3     5.1    -      -       -      -
    293C  GLU      4.2     6.5    -      -       -      +
    294C  ALA*     2.8    44.4    +      -       -      +
    296C  PRO*     4.0    16.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 141 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137C  MET      2.9    14.5    +      -       -      +
    138C  LYS*     3.6    10.1    -      -       +      +
    140C  ARG*     1.3    76.5    -      -       -      +
    142C  ARG*     1.3    82.0    +      -       +      +
    144C  ARG*     3.2    27.9    +      -       -      +
    145C  MET*     3.0    37.5    +      -       +      +
    152C  THR*     3.5    47.6    -      -       +      -
    154C  LYS      4.5     0.9    -      -       -      -
    155C  PRO*     3.5    23.1    -      -       +      -
    200C  GLU      3.0    18.6    +      -       -      -
    201C  ASN*     3.6    38.4    -      -       +      -
    202C  THR      3.4    19.3    -      -       -      -
    203C  ILE*     3.6    27.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 142 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174B  ASP*     2.8    41.9    +      -       -      -
    138C  LYS*     2.8    47.6    +      -       +      +
    139C  TRP*     3.2    42.1    +      -       +      +
    141C  TRP*     1.3    92.9    -      -       +      +
    143C  LYS*     1.3    61.9    +      -       +      +
    145C  MET      3.4     0.3    +      -       -      -
    146C  GLU*     3.0    41.3    +      -       -      +
    152C  THR*     3.9    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 143 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139C  TRP*     3.0    18.6    +      -       +      +
    140C  ARG*     3.7     8.5    -      -       -      +
    142C  ARG*     1.3    75.1    -      -       +      +
    144C  ARG*     1.3    58.8    +      -       -      +
    146C  GLU*     3.2    14.8    +      -       -      +
    147C  ALA*     2.9    32.2    +      -       -      +
    296C  PRO*     4.2    21.7    -      -       +      +
    297C  GLN*     4.6     1.8    -      -       -      +
    298C  GLU*     2.8    44.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 144 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140C  ARG      3.0    12.9    +      -       -      +
    141C  TRP*     3.2    29.3    +      -       -      +
    143C  LYS*     1.3    76.8    -      -       -      +
    145C  MET*     1.3    74.5    +      -       -      +
    147C  ALA*     3.5     7.9    +      -       -      +
    148C  ALA*     3.2    21.1    +      -       -      +
    200C  GLU*     3.6    27.3    +      -       -      +
    202C  THR      4.7     5.7    +      -       -      -
    236C  ILE*     4.4    12.9    -      -       -      +
    237C  ASP*     2.9    40.6    +      -       -      -
    238C  ILE*     5.0     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 145 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141C  TRP*     3.0    35.2    +      -       +      +
    144C  ARG*     1.3    88.6    -      -       -      +
    146C  GLU*     1.3    60.1    +      -       -      +
    148C  ALA*     2.9    16.7    +      -       -      +
    149C  GLY      3.1     0.2    +      -       -      -
    150C  LYS*     2.9    60.9    +      -       +      +
    151C  PRO*     4.0     7.9    -      -       +      +
    152C  THR*     3.8    17.0    -      -       +      -
    200C  GLU*     3.2    37.9    -      -       +      +
    201C  ASN*     3.8    15.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 146 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142C  ARG*     3.0    39.2    +      -       -      +
    143C  LYS*     3.7    15.8    +      -       -      +
    145C  MET*     1.3    69.1    -      -       -      +
    147C  ALA*     1.3    66.1    +      -       -      +
    148C  ALA      3.0     2.0    +      -       -      -
    149C  GLY*     3.2    12.4    +      -       -      +
    150C  LYS      4.6     5.8    -      -       -      +
    152C  THR*     4.2    14.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 147 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143C  LYS      2.9    14.0    +      -       -      +
    144C  ARG*     3.5    13.5    -      -       -      +
    146C  GLU*     1.3    75.8    -      -       -      +
    148C  ALA*     1.3    57.9    +      -       +      +
    149C  GLY      3.3     2.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 148 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  ARG      3.2    13.8    +      -       -      +
    145C  MET*     2.9    10.5    +      -       -      +
    147C  ALA*     1.3    79.6    -      -       +      +
    149C  GLY*     1.3    62.5    +      -       -      +
    150C  LYS*     3.3    27.0    +      -       +      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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