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

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

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1hka
TRANSFERASE HEADER
6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE TITLE
6-HYDROXYMETHYL-7,8-DIHYDROPTERIN COMPND
Illustration of Binding SiteHelp

Figure highlighting the binding site residues. Figures were drawn with Molscript (7) and rendered with Raster3D (8). PISA coordinates (3) are used when available (all entries except NMR).

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Contacting ResiduesHelp

List of binding site residues detected in this protein.

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

Chain ID's of residues are not mentioned in this page because all chains in the apo-structure refer to the same protein.

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8 GLY
42 THR
43 PRO
44 PRO
45 LEU
46 GLY
53 TYR
55 ASN
70 LEU
73 THR
74 GLN
77 GLU
82 ARG
84 ARG
88 ARG
89 TRP
90 GLY
91 PRO
92 ARG
95 ASP
96 LEU
97 ASP
98 ILE
109 GLU
110 ARG
111 LEU
112 THR
113 VAL
115 HIS
116 TYR
121 ARG
123 PHE
124 MET
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:

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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holo-structuresHelp

Table describing the holo-structures and ligands used to define the binding sites.

Column 1 gives the PDB ID of the holo-structure.
Column 2 gives the unique ID of the ligand; a space-separated list of HET-groups that constitute the ligand (see Methods). Each HET-group in the ligand is uniquely identified by a string in which the first four characters are the three-letter HET ID from the PDB file followed by the chain ID from the PISA file, and the last four characters are the residue sequence number from the PDB file.
Column 3 gives the number of atoms in each ligand.
Column 4 gives the number of protein-ligand inter-atomic contacts.

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pdb ID Ligand Unique ID #atoms #contacts
1rao AMPB_171 23 76 Details
HH2B_181 22 71
1rb0 HH2B_181 22 86 Details
1f9y ACTB_164 APCB_171 _MGB_162 _MGB_161 HHRB_181 51 181 Details
1q0n ACTB_164 HHPB_181 APCB_171 _MGB_162 _MGB_161 51 190 Details
1ex8 A4PB_171 _MGB_161 49 169 Details
1eqm ADPB_171 _MGB_161 28 91 Details
v3.0
January 2008
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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