Contacts of the helix formed by residues 107 - 130 (chain H) in PDB entry 6BAA


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 TYR 107 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88H  GLU      5.6     0.2    -      -       -      -
     89H  ILE*     3.5    20.6    -      -       +      +
     92H  GLY*     3.7    31.0    -      -       -      -
     93H  ILE*     3.7    25.6    -      -       +      +
     96H  ASP*     3.2    29.0    +      -       +      -
    102H  ARG*     5.2     6.2    +      -       -      +
    103H  HIS      3.3    26.2    -      -       -      -
    104H  LEU*     4.1    15.8    -      -       -      +
    106H  LEU*     1.3    81.0    -      -       +      +
    108H  MET*     1.3    88.7    +      -       +      +
    109H  PRO*     2.9     7.2    -      -       -      -
    110H  ALA*     3.4     8.2    +      -       -      +
    111H  GLY      3.3    14.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 108 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104H  LEU*     3.0    35.3    +      -       +      +
    105H  HIS*     5.2     0.4    -      -       -      -
    107H  TYR*     1.3    98.2    -      -       +      +
    109H  PRO*     1.3    69.2    -      -       +      +
    111H  GLY*     3.1     5.7    +      -       -      +
    112H  MET*     2.9    45.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 109 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29H  ASP*     4.1    26.2    -      -       +      +
     32H  ASN*     4.9     9.2    -      -       +      -
     33H  VAL*     4.4    13.0    -      -       +      +
     36H  HIS*     3.7    12.9    +      -       -      -
    105H  HIS*     3.2    27.6    -      -       +      +
    106H  LEU      4.2     1.3    -      -       -      -
    107H  TYR*     2.9    15.5    -      -       -      +
    108H  MET*     1.3    95.3    -      -       +      +
    110H  ALA*     1.3    62.5    +      -       -      +
    112H  MET*     3.2    11.7    +      -       +      +
    113H  ALA      3.1    16.1    +      -       -      -
    153H  LYS*     5.8     5.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 110 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85H  LEU*     4.2    11.4    -      -       +      +
     88H  GLU*     4.7    13.5    -      -       +      +
     89H  ILE*     3.8    23.9    -      -       +      +
    106H  LEU      5.9     0.2    -      -       -      +
    107H  TYR*     3.6    11.7    -      -       -      +
    108H  MET      3.2     0.4    -      -       -      -
    109H  PRO*     1.3    81.3    -      -       -      +
    111H  GLY*     1.3    62.2    +      -       -      +
    113H  ALA*     2.9    19.7    +      -       -      +
    114H  PHE*     3.1    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 111 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89H  ILE*     3.4    17.4    -      -       -      +
    107H  TYR      3.3     5.8    +      -       -      -
    108H  MET*     3.1    10.9    +      -       -      -
    110H  ALA*     1.3    78.6    -      -       -      +
    112H  MET*     1.3    62.7    +      -       -      +
    114H  PHE*     3.1    10.3    +      -       -      +
    115H  MET*     3.1    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 112 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88D  MET*     5.6     1.8    -      -       -      -
     33H  VAL*     4.1    16.6    -      -       +      +
     36H  HIS*     3.7    15.2    -      -       +      +
     37H  VAL*     3.7    27.8    -      -       +      -
     40H  LEU*     5.1     8.4    -      -       +      +
    108H  MET*     2.9    51.8    +      -       +      +
    109H  PRO*     3.7    12.1    -      -       +      +
    110H  ALA      3.2     0.4    -      -       -      -
    111H  GLY*     1.3    76.3    -      -       -      +
    113H  ALA*     1.3    52.1    +      -       -      +
    115H  MET*     3.3     9.8    +      -       +      +
    116H  ALA*     2.7    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 113 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36H  HIS*     3.2    37.0    -      -       +      +
     85H  LEU*     3.4    19.6    -      -       +      +
    109H  PRO      3.1     6.6    +      -       -      +
    110H  ALA*     2.9    14.6    +      -       -      +
    112H  MET*     1.3    76.3    -      -       -      +
    114H  PHE*     1.3    52.7    +      -       -      +
    116H  ALA*     3.4     1.7    -      -       -      +
    117H  ALA*     2.6    37.6    +      -       -      +
    142H  TYR*     5.4     0.3    +      -       -      -
    175H  LEU*     6.1     0.9    -      -       +      -
    179H  TYR*     4.5     6.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 114 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82H  LEU*     3.9    35.9    -      -       +      -
     85H  LEU*     3.4    16.5    -      -       +      +
     86H  VAL*     4.5    22.7    -      -       +      -
     89H  ILE*     5.6     4.5    -      -       +      -
    110H  ALA      3.1    10.1    +      -       -      +
    111H  GLY*     3.4    11.9    -      -       -      +
    113H  ALA*     1.3    77.6    -      -       -      +
    115H  MET*     1.3    83.3    +      -       -      +
    117H  ALA*     3.3     4.2    +      -       -      +
    118H  ILE*     3.2    40.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 115 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40H  LEU*     4.5    14.6    -      -       +      -
    111H  GLY      3.1    14.5    +      -       -      +
    112H  MET*     3.6    11.4    -      -       +      +
    114H  PHE*     1.3    97.0    -      -       +      +
    116H  ALA*     1.3    63.8    +      -       -      +
    118H  ILE*     3.4    13.5    +      -       +      +
    119H  THR*     3.2    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 116 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36H  HIS*     3.5    26.5    -      -       +      -
     39H  LEU*     4.0     3.8    -      -       +      +
     40H  LEU*     3.4    14.3    -      -       +      +
    112H  MET      2.7    21.4    +      -       -      +
    113H  ALA*     3.1     5.1    +      -       -      +
    115H  MET*     1.3    72.0    -      -       -      +
    117H  ALA*     1.3    53.4    +      -       -      +
    119H  THR*     2.6    22.7    +      -       -      -
    120H  SER*     2.6    25.8    +      -       -      -
    142H  TYR*     4.0    12.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 117 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78H  THR*     5.4     2.3    -      -       +      +
     81H  LEU*     3.7    18.6    -      -       +      -
     82H  LEU*     3.4    29.3    -      -       +      +
     85H  LEU*     4.7     0.7    -      -       +      -
    113H  ALA      2.6    21.8    +      -       -      +
    114H  PHE*     3.6     4.7    -      -       -      +
    115H  MET      3.3     0.2    -      -       -      -
    116H  ALA*     1.3    73.6    -      -       -      +
    118H  ILE*     1.3    63.4    +      -       -      +
    120H  SER*     2.5    25.0    +      -       -      +
    121H  VAL*     3.1    12.6    +      -       -      +
    142H  TYR*     5.5     1.1    -      -       -      -
    143H  TRP*     5.5     2.9    -      -       +      -
    179H  TYR*     5.6     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 118 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82H  LEU*     4.0    21.3    -      -       +      -
    114H  PHE*     3.2    40.8    +      -       +      +
    115H  MET*     3.4    15.0    +      -       +      +
    116H  ALA      3.3     0.2    -      -       -      -
    117H  ALA*     1.3    76.7    -      -       -      +
    119H  THR*     1.3    59.3    +      -       +      +
    121H  VAL*     3.2    11.5    -      -       +      +
    122H  VAL*     2.9    39.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 119 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39H  LEU*     4.2    10.6    -      -       -      +
     40H  LEU*     3.4    24.4    -      -       +      +
     43H  THR*     5.0     1.1    -      -       -      -
     44H  PHE*     5.4    10.1    -      -       +      -
     47H  LEU*     4.9    17.3    -      -       +      +
    115H  MET*     3.2    14.1    +      -       +      +
    116H  ALA*     2.6    29.5    +      -       -      -
    118H  ILE*     1.3    73.9    -      -       +      +
    120H  SER*     1.3    55.3    +      -       -      +
    121H  VAL      2.9     5.2    +      -       -      -
    122H  VAL*     3.1     5.1    +      -       -      +
    123H  TYR*     2.9    35.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 120 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39H  LEU*     3.6    22.7    -      -       -      -
     78H  THR*     5.2     3.3    -      -       -      +
    116H  ALA      2.6    17.6    +      -       -      -
    117H  ALA*     2.5    26.7    +      -       -      +
    119H  THR*     1.3    72.0    +      -       -      +
    121H  VAL*     1.3    58.7    +      -       -      +
    123H  TYR*     4.4     7.1    -      -       -      +
    124H  TYR*     3.9    15.0    +      -       -      +
    139H  LEU*     4.2    12.5    -      -       -      +
    142H  TYR*     4.7     0.2    -      -       -      -
    143H  TRP*     3.6    32.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 121 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74H  ARG*     5.5     2.9    -      -       +      -
     75H  TRP*     3.6    35.0    -      -       +      -
     78H  THR*     3.8    31.0    -      -       +      +
     82H  LEU*     6.1     2.2    -      -       +      -
    117H  ALA      3.1    13.5    +      -       -      +
    118H  ILE*     3.2    21.8    -      -       +      +
    119H  THR      3.0     0.6    -      -       -      -
    120H  SER*     1.3    79.8    -      -       -      +
    122H  VAL*     1.3    64.5    +      -       +      +
    123H  TYR      3.3     1.1    -      -       -      -
    124H  TYR*     3.3    12.5    +      -       +      +
    125H  HIS*     2.9    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 122 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47H  LEU*     4.9     9.0    -      -       +      -
    118H  ILE*     2.9    33.1    +      -       +      +
    119H  THR*     4.1     4.9    -      -       -      +
    121H  VAL*     1.3    77.7    -      -       +      +
    123H  TYR*     1.3    61.8    +      -       -      +
    125H  HIS*     3.0    11.0    +      -       +      +
    126H  ASN*     2.9    44.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 123 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39H  LEU*     5.6     1.6    -      -       +      -
     43H  THR*     3.7    37.5    -      -       +      +
     46H  ILE*     4.7    14.0    -      -       +      +
     47H  LEU*     3.8    26.3    -      -       +      +
    119H  THR      2.9    18.3    +      -       -      +
    120H  SER*     4.5     4.5    -      -       -      -
    122H  VAL*     1.3    77.2    -      -       -      +
    124H  TYR*     1.3    54.1    +      -       -      +
    126H  ASN*     3.2     3.0    +      -       +      +
    127H  ILE*     3.0    28.7    +      -       +      +
    135H  LEU*     2.3    58.2    +      -       +      +
    136H  LEU*     4.7     2.2    -      -       +      -
    138H  ALA*     4.2     9.7    -      -       +      +
    139H  LEU*     3.7    40.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 124 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68H  PHE*     3.3    33.2    -      +       +      +
     69H  PRO      5.2     0.2    +      -       -      -
     70H  GLY      4.7     1.9    +      -       -      -
     71H  HIS*     3.3    28.1    -      -       +      +
     74H  ARG*     3.3    51.0    +      -       +      +
     75H  TRP*     4.6    14.4    -      +       -      -
    120H  SER      3.9    13.5    +      -       -      +
    121H  VAL*     3.3    14.8    +      -       +      +
    122H  VAL      3.2     0.6    -      -       -      -
    123H  TYR*     1.3    78.5    -      -       -      +
    125H  HIS*     1.3    60.5    +      -       -      +
    127H  ILE*     3.2    13.4    -      -       +      +
    128H  GLU*     2.9    50.8    +      -       -      +
    136H  LEU*     5.7     8.1    -      -       +      -
    139H  LEU*     4.5    10.3    -      -       +      -
    189H  VAL*     5.6     2.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 125 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54H  GLN*     6.3     1.1    -      -       -      -
     65H  TRP*     4.1    19.0    -      +       -      -
     75H  TRP*     4.0    15.0    -      +       +      -
    121H  VAL      2.9    14.2    +      -       -      +
    122H  VAL*     3.0    15.3    +      -       +      +
    124H  TYR*     1.3    77.1    -      -       -      +
    126H  ASN*     1.3    60.1    +      -       -      +
    128H  GLU*     3.4     9.3    +      -       +      +
    129H  THR*     2.4    51.2    +      -       +      -
    223H  ASN*     3.1    44.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 126 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56D  LEU*     5.9     2.9    -      -       -      +
     47H  LEU*     3.9    15.6    -      -       +      +
     50H  GLY*     5.8     7.6    -      -       -      -
     54H  GLN*     4.0    21.0    -      -       -      +
    122H  VAL*     2.9    36.3    +      -       -      +
    123H  TYR*     3.8     5.8    -      -       +      +
    124H  TYR      3.2     0.2    -      -       -      -
    125H  HIS*     1.3    82.6    +      -       -      +
    127H  ILE*     1.3    63.4    +      -       -      +
    128H  GLU      3.2     0.2    -      -       -      -
    129H  THR*     3.3    19.2    +      -       -      +
    130H  SER*     3.3    13.7    +      -       -      +
    135H  LEU*     5.9     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 127 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68H  PHE*     3.2    27.2    -      -       +      -
    123H  TYR*     3.0    19.6    +      -       +      +
    124H  TYR*     3.2    28.3    -      -       +      +
    126H  ASN*     1.3    77.7    -      -       -      +
    128H  GLU*     1.3    59.9    +      -       -      +
    130H  SER      2.8    23.2    -      -       -      +
    131H  ASN*     3.8     0.5    -      -       -      -
    132H  PHE*     3.3    33.4    -      -       +      +
    135H  LEU*     3.7    20.8    -      -       +      +
    136H  LEU*     3.6    43.7    -      -       +      +
    139H  LEU*     5.8     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 128 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65H  TRP*     5.3     6.4    -      -       +      -
     66H  LEU*     3.0    38.0    +      -       +      +
     67H  HIS*     2.5    44.1    +      -       +      +
     68H  PHE*     3.5    20.6    -      -       +      +
     71H  HIS*     3.6    11.0    +      -       -      -
     75H  TRP*     4.0    15.8    +      -       -      -
    124H  TYR*     2.9    42.0    +      -       -      +
    125H  HIS*     3.6     7.7    -      -       +      +
    126H  ASN      3.2     0.2    -      -       -      -
    127H  ILE*     1.3    76.5    -      -       -      +
    129H  THR*     1.3    65.9    +      -       -      +
    130H  SER      4.7     0.2    -      -       -      -
    131H  ASN*     4.4     5.0    -      -       -      +
    223H  ASN*     6.1     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 129 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51D  GLU*     4.4     3.1    -      -       -      +
     54H  GLN*     5.3     8.5    -      -       -      +
     61H  HIS*     5.6    10.5    -      -       +      +
     64H  THR*     3.8    23.7    -      -       -      +
     65H  TRP*     4.5    21.2    -      -       +      -
     66H  LEU*     4.8     0.7    +      -       -      +
    125H  HIS*     2.4    44.3    +      -       +      -
    126H  ASN*     3.4    18.3    +      -       -      +
    127H  ILE      3.2     0.4    -      -       -      -
    128H  GLU*     1.3    80.3    -      -       -      +
    130H  SER*     1.3    61.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 130 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51D  GLU*     2.7    42.6    +      -       -      +
     53D  GLY*     4.0    13.0    +      -       -      -
     55D  PHE*     5.2     5.0    -      -       -      +
     56D  LEU*     5.8    10.4    -      -       -      +
    126H  ASN      3.3     7.0    +      -       -      +
    127H  ILE*     2.8    16.9    -      -       -      +
    129H  THR*     1.3    81.5    -      -       -      +
    131H  ASN*     1.3    64.5    +      -       -      +
    132H  PHE*     3.2     6.3    +      -       -      +
----------------------------------------------------------
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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