Contacts of the helix formed by residues 1493 - 1519 (chain A) in PDB entry 2YIN


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 SER1493 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1462A  MET      4.2     0.4    -      -       -      -
   1463A  TRP*     3.5    25.2    -      -       -      -
   1492A  ILE*     1.3    73.8    -      -       -      +
   1494A  PRO*     1.3    75.2    -      -       -      +
   1495A  LEU*     3.6     8.7    +      -       -      +
   1496A  GLU*     2.6    50.7    +      -       -      +
   1497A  ASN*     2.9    12.9    +      -       -      +
   1555A  TYR*     6.0     0.7    -      -       -      -
   1562A  ASP*     5.5     1.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO1494 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1459A  PHE      3.4    12.6    -      -       -      +
   1460A  ALA      3.1    28.3    -      -       -      +
   1462A  MET      2.4    30.3    -      -       -      +
   1463A  TRP*     3.3    28.5    -      -       +      +
   1493A  SER*     1.3    84.4    -      -       -      +
   1495A  LEU*     1.3    62.9    +      -       -      +
   1497A  ASN*     3.4     6.5    +      -       +      +
   1498A  ALA*     2.9    24.9    +      -       -      +
   1546A  TYR*     5.2     1.0    -      -       -      -
   1550A  PHE*     3.6    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1495 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1493A  SER*     3.0     9.4    +      -       -      +
   1494A  PRO*     1.3    81.0    -      -       -      +
   1496A  GLU*     1.3    63.6    +      -       +      +
   1498A  ALA*     3.1     5.4    +      -       -      +
   1499A  ILE*     3.0    29.8    +      -       +      +
   1550A  PHE*     3.8    24.3    -      -       +      -
   1555A  TYR*     3.6    24.4    +      -       -      +
   1562A  ASP*     3.7    20.6    -      -       +      +
   1565A  LYS*     3.7    31.9    -      -       +      -
   1566A  LEU*     3.8    19.1    -      -       +      -
   1569A  LEU*     3.8    28.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU1496 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1491A  THR      4.3     3.5    -      -       -      +
   1492A  ILE*     3.4    22.1    -      -       +      +
   1493A  SER*     2.6    47.3    +      -       -      +
   1495A  LEU*     1.3    75.8    -      -       -      +
   1497A  ASN*     1.3    57.9    +      -       -      +
   1499A  ILE*     3.3    13.0    +      -       -      +
   1500A  GLU*     3.2    28.1    +      -       -      +
   1565A  LYS*     4.1    32.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN1497 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1462A  MET*     5.0     9.7    -      -       +      +
   1463A  TRP*     4.9     1.6    -      -       -      +
   1464A  ILE*     2.6    54.2    -      -       -      +
   1492A  ILE*     3.6    14.3    +      -       +      +
   1493A  SER      2.9    13.4    +      -       -      +
   1494A  PRO*     3.5     9.6    -      -       +      +
   1496A  GLU*     1.3    74.2    -      -       -      +
   1498A  ALA*     1.3    63.2    +      -       -      +
   1499A  ILE      3.1     1.1    -      -       -      -
   1500A  GLU*     3.3     9.1    +      -       -      +
   1501A  THR*     2.8    36.3    +      -       -      -
     33C  ILE*     5.0     5.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1498 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1494A  PRO      2.9    14.8    +      -       -      +
   1495A  LEU      3.3     9.0    -      -       -      +
   1497A  ASN*     1.3    74.7    -      -       -      +
   1499A  ILE*     1.3    63.6    +      -       -      +
   1501A  THR*     3.2     3.1    +      -       -      -
   1502A  MET*     2.9    27.4    +      -       -      +
   1546A  TYR*     3.4    47.8    -      -       +      -
   1550A  PHE*     3.9     8.5    -      -       +      -
   1569A  LEU*     4.2     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE1499 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1495A  LEU*     3.0    19.9    +      -       +      +
   1496A  GLU*     3.4    11.7    -      -       -      +
   1497A  ASN      3.1     0.4    -      -       -      -
   1498A  ALA*     1.3    76.7    -      -       -      +
   1500A  GLU*     1.3    59.0    +      -       +      +
   1502A  MET*     3.1     3.3    +      -       -      +
   1503A  SER*     2.8    37.3    +      -       -      +
   1565A  LYS*     3.6    38.1    -      -       +      +
   1568A  HIS*     3.9    33.7    -      -       +      +
   1569A  LEU*     4.2    21.8    -      -       +      +
   1572A  LEU*     3.8    14.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU1500 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1464A  ILE*     5.1     1.7    -      -       -      +
   1466A  ARG*     2.7    43.4    +      -       -      -
   1492A  ILE*     3.3    22.9    -      -       -      +
   1496A  GLU      3.2    10.7    +      -       -      +
   1497A  ASN*     3.6    13.5    -      -       -      +
   1499A  ILE*     1.3    76.8    -      -       +      +
   1501A  THR*     1.3    57.5    +      -       -      +
   1503A  SER*     3.1     7.6    +      -       -      -
   1504A  THR*     2.9    37.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR1501 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1497A  ASN*     2.8    21.8    +      -       -      -
   1498A  ALA      3.2     7.8    +      -       -      -
   1500A  GLU*     1.3    76.4    -      -       -      +
   1502A  MET*     1.3    63.4    -      -       -      +
   1504A  THR*     3.8     5.8    -      -       -      -
   1505A  ALA*     3.2    22.0    +      -       -      +
   1546A  TYR*     3.6    22.7    +      -       +      +
     33C  ILE*     5.9     1.9    -      -       -      +
     35C  THR*     4.0    25.4    -      -       -      +
     36C  VAL      4.5     5.8    -      -       -      +
     37C  PHE*     4.7    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET1502 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1498A  ALA      2.9    12.4    +      -       -      +
   1499A  ILE*     3.6     4.0    -      -       -      +
   1501A  THR*     1.3    76.7    -      -       -      +
   1503A  SER*     1.3    65.4    +      -       -      +
   1505A  ALA*     3.2     3.9    +      -       -      +
   1506A  ASN*     3.0    29.7    +      -       -      +
   1543A  PHE*     3.9    17.0    -      -       +      -
   1546A  TYR*     3.0    46.2    -      -       +      -
   1569A  LEU*     4.8    10.1    -      -       +      -
   1572A  LEU*     3.7    34.8    -      -       +      -
   1573A  ILE*     4.6     6.7    -      -       -      +
   1576A  GLN*     3.4    24.9    -      -       -      +
     37C  PHE*     4.0    17.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER1503 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1499A  ILE*     2.8    29.3    +      -       -      +
   1500A  GLU*     3.6     8.7    -      -       -      -
   1502A  MET*     1.3    72.6    -      -       -      +
   1504A  THR*     1.3    58.3    +      -       -      +
   1506A  ASN*     3.3     3.9    +      -       -      +
   1507A  GLU*     2.8    46.8    +      -       -      +
   1568A  HIS*     5.3     2.1    +      -       -      -
   1572A  LEU*     4.1    21.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR1504 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1500A  GLU*     2.9    20.6    +      -       -      +
   1501A  THR*     3.8     6.7    -      -       -      -
   1503A  SER*     1.3    77.2    -      -       -      +
   1505A  ALA*     1.3    58.0    +      -       -      +
   1507A  GLU*     3.4    13.6    +      -       +      +
   1508A  LYS*     2.8    54.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1505 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1501A  THR      3.2    15.1    +      -       -      +
   1502A  MET*     3.2     6.7    +      -       -      +
   1504A  THR*     1.3    80.8    -      -       -      +
   1506A  ASN*     1.3    63.1    +      -       -      +
   1508A  LYS*     3.4     9.7    +      -       -      +
   1509A  ILE*     3.0    32.9    +      -       -      +
   1534A  ILE*     4.5    12.4    -      -       +      +
   1576A  GLN*     4.7     1.8    -      -       -      +
     37C  PHE*     3.9    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN1506 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1502A  MET*     3.0    17.3    +      -       -      +
   1503A  SER*     3.8     4.3    -      -       -      +
   1505A  ALA*     1.3    75.0    -      -       -      +
   1507A  GLU*     1.3    66.0    +      -       -      +
   1509A  ILE*     3.1    10.8    +      -       -      +
   1510A  LEU*     2.9    26.2    +      -       -      +
   1572A  LEU*     3.4    34.8    -      -       +      +
   1575A  TRP*     4.0    17.9    -      -       +      -
   1576A  GLN*     3.2    47.5    +      -       -      +
   1579A  PHE*     3.9     9.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU1507 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1503A  SER*     2.8    37.2    +      -       -      +
   1504A  THR*     3.6    12.9    +      -       +      +
   1506A  ASN*     1.3    73.1    -      -       -      +
   1508A  LYS*     1.3    57.8    +      -       -      +
   1510A  LEU*     3.5     5.4    +      -       -      +
   1511A  MET*     2.9    54.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS1508 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1504A  THR*     2.8    39.2    +      -       +      +
   1505A  ALA*     3.5     8.4    -      -       -      +
   1507A  GLU*     1.3    73.6    -      -       -      +
   1509A  ILE*     1.3    66.8    +      -       -      +
   1511A  MET*     3.6     8.9    +      -       -      +
   1512A  MET*     3.0    27.5    +      -       +      +
   1515A  GLN*     5.1     0.2    +      -       -      -
   1530A  LEU*     4.0    25.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE1509 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1505A  ALA      3.0    17.3    +      -       -      +
   1506A  ASN*     3.1    23.3    +      -       -      +
   1508A  LYS*     1.3    73.5    -      -       -      +
   1510A  LEU*     1.3    66.6    +      -       -      +
   1512A  MET*     2.9     6.6    +      -       +      +
   1513A  ILE*     2.9    29.9    +      -       +      +
   1530A  LEU*     4.0    12.1    -      -       +      -
   1531A  LEU*     4.5    15.3    -      -       +      -
   1534A  ILE*     4.0    20.6    -      -       +      -
   1576A  GLN*     4.3     5.8    -      -       +      -
   1579A  PHE*     3.6    38.6    -      -       +      +
   1580A  LEU*     3.9    23.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1510 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1506A  ASN      2.9    15.1    +      -       -      +
   1507A  GLU*     3.7     6.1    -      -       -      +
   1509A  ILE*     1.3    76.3    -      -       -      +
   1511A  MET*     1.3    64.8    +      -       +      +
   1513A  ILE*     2.8    53.6    +      -       +      +
   1514A  ASN*     3.0    22.9    +      -       -      +
   1575A  TRP*     5.8     2.0    -      -       +      +
   1579A  PHE*     3.6    29.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET1511 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1428A  ASP*     4.0    35.3    -      -       +      +
   1432A  ASN*     4.2    26.9    -      -       -      +
   1435A  LYS*     4.5     9.4    -      -       -      +
   1507A  GLU*     2.9    47.4    +      -       +      +
   1508A  LYS*     4.0     7.9    -      -       -      +
   1510A  LEU*     1.3    74.4    -      -       +      +
   1512A  MET*     1.3    63.7    +      -       -      +
   1514A  ASN*     3.4     3.3    +      -       -      +
   1515A  GLN*     3.0    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET1512 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1508A  LYS*     3.0    15.8    +      -       +      +
   1509A  ILE      2.9    13.1    +      -       -      +
   1511A  MET*     1.3    74.7    -      -       -      +
   1513A  ILE*     1.3    63.2    +      -       +      -
   1515A  GLN*     3.3    30.7    +      -       -      +
   1516A  TYR*     3.1    45.4    +      -       +      -
   1526A  PRO*     3.7    28.7    -      -       +      +
   1527A  LEU*     3.4    27.8    -      -       +      -
   1530A  LEU*     4.1    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE1513 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1509A  ILE*     2.9    27.7    +      -       +      +
   1510A  LEU*     2.8    46.0    +      -       +      +
   1512A  MET*     1.3    70.6    -      -       +      +
   1514A  ASN*     1.3    72.8    +      -       -      +
   1516A  TYR*     3.2     2.1    +      -       -      +
   1517A  GLN*     2.7    48.8    +      -       -      +
   1527A  LEU*     5.9     2.2    -      -       +      -
   1579A  PHE*     4.5     5.4    -      -       +      +
   1582A  ALA*     4.6    13.0    -      -       +      -
   1583A  GLY*     4.2    27.4    -      -       -      +
   1586A  ILE*     3.9    15.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN1514 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1428A  ASP*     3.7    21.1    +      -       -      +
   1510A  LEU*     3.0    30.8    +      -       -      +
   1511A  MET      3.5     7.4    -      -       -      +
   1513A  ILE*     1.3    86.6    -      -       -      +
   1515A  GLN*     1.3    63.2    -      -       +      +
   1517A  GLN*     3.4    20.0    +      -       -      +
   1518A  SER*     3.0    28.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1515 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1511A  MET*     3.0    37.1    +      -       +      +
   1512A  MET*     3.3    33.1    +      -       -      +
   1514A  ASN*     1.3    75.5    -      -       +      +
   1516A  TYR*     1.3    65.5    +      -       +      +
   1518A  SER*     3.7     5.0    -      -       -      -
   1519A  ASP*     3.0    24.4    +      -       -      +
   1522A  LEU*     3.3    23.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR1516 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1512A  MET*     3.1    51.1    +      -       +      +
   1513A  ILE      3.9     1.6    -      -       -      +
   1515A  GLN*     1.3    89.0    -      -       +      +
   1517A  GLN*     1.3    63.4    +      -       -      +
   1519A  ASP      2.8    20.8    -      -       -      +
   1520A  GLU*     4.6     4.7    -      -       -      +
   1522A  LEU*     3.5    35.8    -      -       +      +
   1523A  PRO      2.4    34.8    +      -       -      -
   1524A  ILE*     4.2     8.5    -      -       +      -
   1526A  PRO*     3.5    19.9    -      -       +      +
   1527A  LEU*     3.7    26.9    +      -       +      -
   1586A  ILE*     4.2    25.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN1517 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1513A  ILE*     2.7    31.8    +      -       -      +
   1514A  ASN*     3.4    26.9    +      -       -      +
   1516A  TYR*     1.3    74.3    -      -       -      +
   1518A  SER*     1.3    60.9    +      -       -      +
   1519A  ASP      4.9     0.7    -      -       -      -
   1520A  GLU*     4.9     6.2    -      -       -      +
   1586A  ILE*     4.0    16.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER1518 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1514A  ASN      3.0    19.3    +      -       -      -
   1515A  GLN*     3.7     5.9    +      -       -      -
   1517A  GLN*     1.3    79.6    -      -       -      +
   1519A  ASP*     1.3    58.9    +      -       -      +
   1520A  GLU*     4.5     1.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1519 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1515A  GLN      3.0    13.6    +      -       -      +
   1516A  TYR*     2.8    27.1    -      -       -      +
   1517A  GLN      3.4     0.2    -      -       -      -
   1518A  SER*     1.3    81.2    -      -       -      +
   1520A  GLU*     1.3    62.9    +      -       -      +
   1521A  THR*     2.5    55.2    +      -       -      +
   1522A  LEU*     3.8    26.9    -      -       +      +
----------------------------------------------------------
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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