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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1hex
OXIDOREDUCTASE HEADER
STRUCTURE OF 3-ISOPROPYLMALATE DEHYDROGENASE IN COMPLEX WITH NAD+: LIGAND-INDUCED LOOP-CLOSING AND MECHANISM FOR COFACTOR SPECIFICITY TITLE
3-ISOPROPYLMALATE DEHYDROGENASE 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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NAD B 400
11A ILE
15A VAL
72A VAL
73A GLY
74A GLY
75A PRO
78A ASP
85A ARG
87A GLU
88A THR
254A LEU
255A GLY
273A HIS
274A GLY
275A SER
276A ALA
277A PRO
278A ASP
279A ILE
284A ILE
285A ALA
286A ASN
326A ASP
NAD D 400
11C ILE
15C VAL
72C VAL
73C GLY
74C GLY
75C PRO
78C ASP
85C ARG
87C GLU
88C THR
254C LEU
255C GLY
273C HIS
274C GLY
275C SER
276C ALA
277C PRO
278C ASP
279C ILE
284C ILE
285C ALA
286C ASN
326C ASP
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
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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
1xab Details
other holo-structures
pdb ID Ligand Unique ID
2ztw NADF_400 Details
NADC_400
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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NAD NAME: NICOTINAMIDE-ADENINE-DINUCLEOTIDE
FORMULA: C21 H27 N7 O14 P2
SMILES: NC(=O)c1ccc[n+](c1)C2OC(COP([O-])(=O)OP(O)(=O)OCC3OC(C(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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