Contacts of the helix formed by residues 102 - 128 (chain H) in PDB entry 1VEQ


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with VAL 102 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42H  VAL*     3.8    18.2    -      -       +      -
     43H  VAL      3.1    13.3    +      -       -      +
     44H  GLY*     3.9    11.9    -      -       -      -
     45H  PRO*     4.8     1.6    -      -       +      -
     46H  ASN*     3.7    37.0    -      -       -      +
     47H  PHE*     4.5     0.4    -      -       -      +
     50H  VAL*     3.2    38.4    -      -       +      -
    101H  THR*     1.3    75.7    -      -       -      +
    103H  GLN*     1.3    72.8    +      -       +      +
    104H  ALA      3.1     0.5    +      -       -      -
    105H  HIS*     3.2     1.9    +      -       -      +
    106H  LEU*     3.1    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 103 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45C  PRO*     4.5    20.1    -      -       -      +
     46H  ASN*     4.8     4.2    +      -       -      +
    101H  THR*     3.5    11.0    -      -       -      +
    102H  VAL*     1.3    90.3    -      -       +      +
    104H  ALA*     1.3    65.3    +      -       -      +
    106H  LEU*     3.4     4.1    +      -       -      +
    107H  ALA*     2.9    26.4    +      -       -      +
    155H  HIS*     4.0    21.2    +      -       -      +
    156H  LEU*     4.0    19.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 104 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97H  VAL*     4.8     6.5    -      -       +      -
    100H  ASP*     3.5    28.7    -      -       +      +
    101H  THR*     3.0    23.9    +      -       -      +
    102H  VAL      3.1     0.2    +      -       -      -
    103H  GLN*     1.3    78.2    -      -       -      +
    105H  HIS*     1.3    65.4    +      -       -      +
    107H  ALA*     3.2     5.4    +      -       -      +
    108H  ALA*     3.0    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 105 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38H  VAL*     3.9    20.5    -      -       +      +
     41H  ASN*     3.2    23.7    +      -       +      -
     42H  VAL*     3.6    22.7    -      -       +      -
     50H  VAL*     6.5     0.4    -      -       +      -
     95H  TYR*     2.6    39.6    +      +       -      +
     97H  VAL*     3.0    30.3    -      -       +      +
     98H  GLU      3.1    17.7    +      -       -      -
    100H  ASP*     3.6     7.0    +      -       +      -
    101H  THR      3.4    19.7    +      -       -      -
    102H  VAL      3.2     5.2    +      -       -      +
    104H  ALA*     1.3    79.0    -      -       -      +
    106H  LEU*     1.3    56.2    +      -       +      +
    108H  ALA*     2.8     3.0    +      -       -      -
    109H  LEU*     2.5    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 106 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38H  VAL*     6.5     0.9    -      -       +      -
     50H  VAL*     3.9    11.4    -      -       +      -
     53H  MET*     4.1    17.3    -      -       +      -
     54H  ILE*     6.2     0.7    -      -       +      -
    102H  VAL*     3.1    36.4    +      -       +      +
    103H  GLN*     3.8     5.2    -      -       -      +
    105H  HIS*     1.3    78.3    -      -       +      +
    107H  ALA*     1.3    53.1    +      -       -      +
    109H  LEU*     3.2     9.6    +      -       +      -
    110H  ASP*     2.7    31.7    +      -       -      +
    152H  VAL*     3.1    41.1    -      -       +      +
    155H  HIS*     3.5    35.7    -      -       +      -
    156H  LEU*     4.0    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 107 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103H  GLN      2.9    18.7    +      -       -      +
    104H  ALA*     3.5     4.5    -      -       -      +
    106H  LEU*     1.3    74.0    -      -       -      +
    108H  ALA*     1.3    65.2    +      -       -      +
    110H  ASP*     2.9    21.3    -      -       -      +
    111H  LEU*     3.0    13.5    -      -       +      +
    156H  LEU*     3.8    20.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 108 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95H  TYR*     3.6    23.1    -      -       +      +
     97H  VAL*     4.1    12.8    -      -       +      -
    104H  ALA      3.0    12.2    +      -       -      +
    105H  HIS      2.8     6.4    +      -       -      +
    107H  ALA*     1.3    75.7    -      -       -      +
    109H  LEU*     1.3    61.8    +      -       -      +
    111H  LEU*     3.3    20.0    +      -       -      +
    112H  VAL*     3.1    18.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 109 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31H  LEU*     5.6     0.2    -      -       +      -
     34H  THR*     4.7     8.5    -      -       +      -
     35H  LEU*     4.0    28.0    -      -       +      -
     38H  VAL*     4.2    32.8    -      -       +      -
     54H  ILE*     5.5     2.5    -      -       +      -
     95H  TYR*     4.3     6.7    -      -       +      -
    105H  HIS      2.5    19.5    +      -       -      +
    106H  LEU*     3.5    14.4    -      -       +      +
    108H  ALA*     1.3    69.6    -      -       -      +
    110H  ASP*     1.3    70.6    +      -       -      +
    112H  VAL*     3.0    28.4    +      -       +      +
    113H  TYR*     3.0    27.4    +      -       +      -
    148H  PHE*     4.3    17.0    -      -       +      -
    152H  VAL*     4.3    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 110 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106H  LEU      2.7    13.9    +      -       -      +
    107H  ALA*     2.9    19.3    -      -       -      +
    109H  LEU*     1.3    78.2    -      -       -      +
    111H  LEU*     1.3    67.4    +      -       +      +
    113H  TYR*     3.2     3.2    +      -       -      +
    114H  ASN*     2.9    25.7    +      -       -      +
    149H  GLN*     3.5     8.8    +      -       -      +
    152H  VAL*     4.2     8.2    -      -       +      +
    153H  ARG*     2.8    47.9    +      -       -      +
    156H  LEU*     4.6    10.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 111 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107H  ALA      3.0    20.6    -      -       -      +
    108H  ALA*     3.3    11.9    +      -       -      +
    109H  LEU      3.1     0.4    -      -       -      -
    110H  ASP*     1.3    83.9    -      -       +      +
    112H  VAL*     1.3    66.2    +      -       +      +
    114H  ASN*     2.9    30.9    +      -       +      +
    115H  GLY*     3.1     5.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 112 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30H  ASP*     5.0    11.7    -      -       -      +
     31H  LEU*     4.7    17.0    -      -       +      -
     34H  THR*     5.3     8.1    -      -       +      -
     92H  TRP*     5.7     6.1    -      -       +      -
     95H  TYR*     4.3    14.8    -      -       +      -
    108H  ALA      3.1    20.0    -      -       -      +
    109H  LEU*     3.0    25.7    +      -       +      +
    111H  LEU*     1.3    75.6    -      -       +      +
    113H  TYR*     1.3    64.8    +      -       +      +
    115H  GLY*     3.3     3.4    +      -       -      -
    116H  VAL*     3.1    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 113 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31H  LEU*     3.4    30.0    -      -       +      +
     35H  LEU*     3.6    15.9    -      -       +      +
     57H  GLN*     3.1    30.4    +      -       -      +
    109H  LEU*     3.0    26.2    +      -       +      +
    110H  ASP*     3.6     4.3    -      -       -      +
    112H  VAL*     1.3    74.9    -      -       +      +
    114H  ASN*     1.3    57.9    +      -       -      +
    116H  VAL*     4.1     6.3    -      -       +      -
    117H  ILE*     2.7    41.8    +      -       +      +
    145H  LEU*     3.5    43.3    -      -       +      -
    148H  PHE*     3.4    33.0    -      +       -      -
    149H  GLN*     3.5    28.5    -      -       +      +
    152H  VAL*     5.5     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 114 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110H  ASP*     2.9    21.3    +      -       -      +
    111H  LEU*     2.9    19.0    +      -       -      +
    113H  TYR*     1.3    76.5    -      -       -      +
    115H  GLY*     1.3    58.7    +      -       -      +
    117H  ILE*     3.9     1.0    -      -       -      +
    118H  GLU*     2.9    36.0    +      -       -      +
    149H  GLN*     2.9    16.1    +      -       -      +
    153H  ARG*     3.1    14.3    +      -       -      +
      7I  PRO*     3.8    23.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 115 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92H  TRP*     4.3    14.3    -      -       -      -
    111H  LEU      3.1     7.3    +      -       -      -
    112H  VAL*     3.3     4.7    +      -       -      -
    113H  TYR      3.2     0.2    -      -       -      -
    114H  ASN*     1.3    80.1    -      -       -      +
    116H  VAL*     1.3    58.9    +      -       -      +
    118H  GLU*     4.1     7.2    -      -       -      -
    119H  ASP*     3.1    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 116 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27H  THR*     4.0    30.7    -      -       +      +
     28H  TYR*     4.7    11.2    -      -       +      -
     31H  LEU*     4.6    31.2    -      -       +      -
     92H  TRP*     4.7     7.2    -      -       +      -
    112H  VAL*     3.1    22.2    -      -       +      +
    113H  TYR*     3.0    11.1    +      -       +      +
    115H  GLY*     1.3    79.3    -      -       -      +
    117H  ILE*     1.3    60.0    +      -       +      +
    119H  ASP*     3.8     2.2    +      -       -      +
    120H  THR*     2.7    39.7    +      -       -      +
    145H  LEU*     4.7    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 117 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113H  TYR*     2.7    23.4    +      -       +      +
    114H  ASN      4.0     2.0    -      -       -      +
    116H  VAL*     1.3    71.7    -      -       +      +
    118H  GLU*     1.3    58.4    +      -       -      +
    120H  THR*     3.2     6.0    +      -       -      -
    121H  ARG*     2.8    41.9    +      -       +      +
    142H  ALA*     5.6     2.9    -      -       +      -
    145H  LEU*     4.6    11.4    -      -       +      -
    146H  GLU*     3.5    55.0    -      -       +      +
    149H  GLN*     3.4    42.0    -      -       +      +
      6I  ILE*     4.3     9.0    -      -       +      -
      7I  PRO*     4.2    10.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 118 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114H  ASN*     2.9    20.7    +      -       -      +
    115H  GLY*     4.4     5.3    -      -       -      +
    117H  ILE*     1.3    74.3    -      -       -      +
    119H  ASP*     1.3    71.9    +      -       -      +
    120H  THR      3.0     1.0    +      -       -      -
    121H  ARG*     3.1     5.4    +      -       +      +
    122H  LYS*     3.1    23.0    +      -       -      +
      7I  PRO*     4.0    29.0    +      -       +      +
      8I  GLY*     5.3     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 119 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23H  LYS*     3.4    33.7    +      -       +      -
     24H  GLN*     4.7     7.4    -      -       -      +
     27H  THR*     5.2     9.5    +      -       +      +
     91H  THR*     5.0     3.5    +      -       -      -
     92H  TRP*     4.9    11.0    -      -       -      -
    115H  GLY*     3.1    24.0    +      -       -      +
    116H  VAL*     4.1     4.0    -      -       -      +
    118H  GLU*     1.3    83.0    -      -       -      +
    120H  THR*     1.3    61.1    +      -       -      +
    122H  LYS*     3.8     6.1    +      -       -      +
    123H  SER*     3.1    27.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 120 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24H  GLN*     2.6    25.5    +      -       -      +
     28H  TYR*     4.7     2.3    +      -       -      +
    116H  VAL*     2.7    27.0    +      -       -      +
    117H  ILE*     3.3     7.6    -      -       -      -
    118H  GLU      3.0     0.4    -      -       -      -
    119H  ASP*     1.3    74.2    -      -       -      +
    121H  ARG*     1.3    69.1    +      -       +      +
    123H  SER*     2.8    17.1    +      -       -      -
    124H  ILE*     2.8    28.6    +      -       +      +
    138H  LEU*     3.7    28.3    -      -       +      +
    141H  HIS*     5.8     0.2    -      -       +      -
    142H  ALA*     4.4    14.1    -      -       +      +
    145H  LEU*     5.7     4.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 121 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117H  ILE*     2.8    28.9    +      -       +      +
    118H  GLU*     3.5     6.3    -      -       +      +
    120H  THR*     1.3    73.9    -      -       +      +
    122H  LYS*     1.3    63.4    +      -       -      +
    124H  ILE*     3.0    27.0    +      -       +      +
    125H  GLU*     3.1    15.0    +      -       -      +
    142H  ALA*     5.8     0.7    -      -       +      -
    146H  GLU*     3.0    37.4    +      -       -      +
      6I  ILE*     3.4    21.2    -      -       -      +
      7I  PRO      4.2    11.4    +      -       -      +
      8I  GLY*     5.1     9.3    +      -       -      -
      9I  LEU*     4.2    19.7    -      -       -      +
     71I  ARG*     3.9     5.1    -      -       -      +
    130I  LEU      5.4     0.2    +      -       -      -
    131I  ASP*     2.8    33.8    +      -       -      +
    132I  LEU*     4.9     2.0    -      -       -      +
    133I  VAL*     4.1     6.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 122 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118H  GLU      3.1    12.2    +      -       -      +
    119H  ASP*     3.9     6.7    -      -       -      +
    121H  ARG*     1.3    78.8    -      -       -      +
    123H  SER*     1.3    63.7    +      -       -      +
    124H  ILE      3.1     0.3    +      -       -      -
    125H  GLU*     3.3     6.7    +      -       -      +
    126H  LYS*     3.0    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 123 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20H  LEU*     3.3    32.4    +      -       -      +
     23H  LYS*     5.8     3.1    -      -       -      +
     24H  GLN*     4.3    10.5    +      -       -      -
    119H  ASP      3.1    12.6    +      -       -      -
    120H  THR*     2.8    17.7    +      -       -      -
    122H  LYS*     1.3    74.8    -      -       -      +
    124H  ILE*     1.3    57.5    +      -       -      +
    126H  LYS*     4.0     8.4    -      -       -      +
    127H  LEU*     3.0    35.6    +      -       -      +
    138H  LEU*     5.1     8.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 124 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120H  THR*     2.8    35.0    +      -       +      +
    121H  ARG*     3.0    17.5    +      -       -      +
    123H  SER*     1.3    74.4    -      -       -      +
    125H  GLU*     1.3    60.2    +      -       -      +
    126H  LYS      3.1     0.7    -      -       -      -
    127H  LEU*     2.7    34.4    +      -       -      +
    128H  GLU      3.2     5.5    +      -       -      -
    135H  GLN*     3.5    27.3    +      -       +      +
    138H  LEU*     4.1    12.8    -      -       +      +
    139H  ILE*     3.9    36.8    -      -       +      +
    142H  ALA*     4.5     8.1    -      -       +      -
    132I  LEU*     4.5    13.9    -      -       +      -
    133I  VAL*     5.1     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 125 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121H  ARG      3.1     7.8    +      -       -      +
    122H  LYS*     3.8     8.7    -      -       -      +
    124H  ILE*     1.3    80.8    -      -       -      +
    126H  LYS*     1.3    61.6    +      -       -      +
    127H  LEU      3.3     0.7    +      -       -      -
    128H  GLU*     3.4    29.0    +      -       -      +
    129H  ASP*     4.6     6.4    -      -       -      +
    135H  GLN*     5.1     0.4    -      -       -      +
    132I  LEU*     4.8    16.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 126 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20H  LEU*     4.5    25.6    -      -       +      +
    122H  LYS*     3.0    28.7    +      -       -      +
    123H  SER*     4.0     7.2    -      -       -      +
    125H  GLU*     1.3    76.2    -      -       -      +
    127H  LEU*     1.3    60.4    +      -       -      +
    129H  ASP*     4.1     9.5    +      -       -      +
    130H  LEU*     3.6    19.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 127 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17H  VAL*     4.0    26.2    -      -       +      -
     20H  LEU*     4.1    10.8    -      -       +      -
     21H  LEU*     5.0     7.2    -      -       +      -
    123H  SER*     3.0    24.4    +      -       -      +
    124H  ILE*     2.7    19.7    +      -       -      +
    126H  LYS*     1.3    69.6    -      -       -      +
    128H  GLU*     1.3    56.3    +      -       -      -
    129H  ASP      2.8    12.4    +      -       -      -
    130H  LEU*     2.8    35.4    +      -       +      -
    131H  ASP      3.2    25.9    +      -       -      +
    134H  SER*     3.2    28.7    -      -       -      +
    135H  GLN*     4.2     9.2    -      -       +      -
    138H  LEU*     4.5    11.9    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    128G  GLU*     4.2    13.7    -      -       -      +
    124H  ILE      3.2     5.8    +      -       -      +
    125H  GLU*     3.4    23.9    +      -       -      +
    127H  LEU*     1.3    75.1    -      -       -      +
    129H  ASP*     1.3    63.0    +      -       -      +
    130H  LEU      5.2     0.2    -      -       -      -
    132H  LEU*     4.5    23.3    -      -       +      +
    135H  GLN*     3.3    29.3    +      -       -      +
    128I  GLU*     4.1    17.6    -      -       -      +
    132I  LEU*     4.8    14.9    -      -       -      +
----------------------------------------------------------
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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