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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1rs2
LYASE HEADER
DHNA COMPLEX WITH 8-AMINO-1,3-DIMETHYL-3,7-DIHYDROPURINE-2, 6-DIONE TITLE
DIHYDRONEOPTERIN ALDOLASE 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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209 I1001
5B ILE
16A HIS
17A GLY
18A ALA
19A LEU
22A GLU
48B VAL
51B THR
52B VAL
53B HIS
54B TYR
55B GLY
71A ASN
72A LEU
73A LEU
74A GLU
100A LYS
104A PRO
105A ILE
209 O1001
5D ILE
16G HIS
17G GLY
18G ALA
19G LEU
22G GLU
48D VAL
51D THR
52D VAL
53D HIS
54D TYR
55D GLY
71G ASN
72G LEU
73G LEU
74G GLU
100G LYS
104G PRO
105G ILE
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):

» Jmol
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
1dhn Details
other holo-structures
pdb ID Ligand Unique ID
1rsd PSBO1001 Details
PSBJ1001
PSBL1001
PSBI1001
PSBN1001
PSBK1001
PSBM1001
PSBP1001
1rs4 45PJ1001 Details
45PM1001
45PK1001
45PO1001
45PL1001
45PN1001
45PI1001
45PP1001
1u68 NPRL1001 Details
NPRK1001
NPRJ1001
NPRP1001
NPRO1001
NPRI1001
NPRN1001
NPRM1001
2nm3 MPUE_131 Details
MPUB_131
MPUA_131
MPUC_131
MPUD_131
MPUF_131
MPUG_131
MPUH_131
2nm2 NEUE_222 Details
NEUD_422
NEUC_322
NEUH_322
NEUF_122
NEUB_222
NEUG_422
NEUA_122
1rsi 977L1001 Details
977K1001
977O1001
977N1001
977M1001
977I1001
977P1001
977J1001
1rri A45O1001 Details
A45N1001
A45P1001
A45L1001
A45M1001
A45J1001
A45I1001
A45K1001
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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209 NAME: 8-AMINO-1,3-DIMETHYL-3,7-DIHYDROPURINE-2,6-DIONE
FORMULA: C7 H9 N5 O2
SMILES: CN1C(=O)N(C)c2[nH]c(N)nc2C1=O
v7.0
March 2009
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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