university lille north of france LigASite database of binding sites
holo-structureHelp

PDB ID and HEADER, TITLE and COMPND records of the PDB file.

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2rk2
OXIDOREDUCTASE HEADER
DHFR R-67 COMPLEXED WITH NADP TITLE
DIHYDROFOLATE REDUCTASE TYPE 2 COMPND
Illustration of Binding SiteHelp

Figure showing the binding site residues. Ligands are displayed as CPK. Figures were drawn with Molscript (7) and rendered with Raster3D (8). PISA coordinates (3) are used when available (all entries except NMR). Ligands do not appear on the picture when PISA fails to apply symmetry operations to ligand coordinates.

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HETgroup - Residue ContactsHelp

List of binding site residues detected in this holo-structure.

Column 1 gives the position, coloured on a yellow-to-red scale depending on the number of holo-structures where the residue is in contact with a ligand.
Column 2 gives the identifier of the chain to which the residue belongs.
Column 3 gives the 3-letter amino acid code, coloured according to physico-chemical type.

The binding residues in this holo structure are listed for each ligand independently, following the ligand's unique ID.

Note that since PISA files are used whenever available, chain identifiers may differ from those in original PDB files.

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NAP M 1
32G LYS
33G LYS
34G SER
35G GLY
36G ALA
46G TYR
50G LEU
51G THR
64J GLY
65J SER
66J VAL
67A GLN
68G ILE
69A TYR
70G PRO
72G ALA
73G ALA
NAP N 1
32D LYS
33D LYS
34D SER
35D GLY
36D ALA
46D TYR
50D LEU
51D THR
64A GLY
65A SER
66A VAL
67J GLN
68D ILE
69J TYR
70D PRO
72D ALA
73D ALA
NAP O 1
32A LYS
33A LYS
34A SER
35A GLY
36A ALA
46A TYR
50A LEU
51A THR
64D GLY
65D SER
66D VAL
67G GLN
68A ILE
69G TYR
70A PRO
72A ALA
73A ALA
NAP P 1
32J LYS
33J LYS
34J SER
35J GLY
36J ALA
46J TYR
50J LEU
51J THR
64G GLY
65G SER
66G VAL
67D GLN
68J ILE
69D TYR
70J PRO
72J ALA
73J ALA
External LinksHelp

PDB The Protein Data Bank
CSA Catalytic Site Atlas
PDBSum Overview of the macromolecular structure
CATH Protein Structure Classification
Scop Structural Classification of Proteins
Pfam Protein Families and Domains
UniProt Universal Protein Resource

LIGPLOT (only on holo-pages) is hosted at the EBI.

The LigPlot Jmol links point directly to the Jmol visualisation interface provided on the PDBSum page.

Note that due to different software used, the atomic contacts of LigPlot and LigASite do not necessarily correspond.

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Links to external databases:

LigPlot (hosted at the EBI):

Download FilesHelp

Several files are provided for download:

• The XML file defining the residue-ligand contacts; this file contains data on the apo and all holo-structures.
• The XML Schema file defining the semantics of the XML file
• 3D coordinates of the structure used in constructing LigASite (PISA structure file whenever available, PDB file otherwise.
• 3D coordinates of the combined binding residues in the apo structure
• 3D coordinates of the binding residues of the holo structure (only on the holo page)

Coordinate files are in PDB format.

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Hide table of related structures
Help

List of related structure, containing both the apo-structure and other holo-structures.

Column 1 gives the PDB ID and column 2 the unique ID of the ligands (holo-structures only).

Clicking the blue 'Hide table of related structures' button removes the entire table.

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apo-structure
pdb ID
2gqv Details
other holo-structures
pdb ID Ligand Unique ID
none
Ligand ListHelp

Ligands present in this holo structure.

Column 1 shows the ligand HET code
Column 2 shows the name, chemical formula and (non-stereo) SMILES string.

Data in column 2 appears as 'not_found' when it is not present in the file 'pdb2smiles.xml' from www.rcsb.org.

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NAP NAME: NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
FORMULA: C21 H28 N7 O17 P3
SMILES: NC(=O)c1ccc[n+](c1)C2OC(COP([O-])(=O)OP(O)(=O)OCC3OC(C(OP(O)(O)=O)C3O)[n]4cnc5c(N)ncnc45)C(O)C2O
v9.7
April 2012
Interdisciplinary Research Institute, Computational Biology, Villeneuve d'Ascq, France
University College London, Biomolecular Structure and Modelling Unit, London, UK
Hospital for Sick Children and University of Toronto, Structural Biology and Biochemistry Program, Toronto, Canada
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