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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1non
TRANSCRIPTION, TRANSFERASE HEADER
PYRR, THE REGULATOR OF THE PYRIMIDINE BIOSYNTHETIC OPERON IN BACILLUS CALDOLYTICUS TITLE
PYRR BIFUNCTIONAL PROTEIN 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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38 ILE
39 LYS
40 THR
41 ARG
42 GLY
70 LEU
71 TYR
72 ARG
84 PRO
92 PRO
93 PHE
94 PRO
95 VAL
96 THR
98 ARG
104 ASP
105 ASP
106 VAL
107 LEU
108 PHE
109 THR
110 GLY
111 ARG
112 THR
113 VAL
122 ASP
123 LEU
124 GLY
125 ARG
137 ARG
160 LEU
161 ILE
162 VAL
163 VAL
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
1xz8 3GPM_300 5GPM_200 _MGM_100 49 187 Details
U5PQ_400 _MGQ_101 22 92
3GPN_300 _MGN_100 5GPN_200 49 187
U5PP_400 _MGP_101 22 89
U5PO_400 _MGO_101 22 92
3GPP_300 5GPP_200 _MGP_100 49 194
3GPR_300 _MGR_100 5GPR_200 49 194
U5PM_400 _MGM_101 22 92
3GPO_300 5GPO_200 _MGO_100 49 191
3GPQ_300 5GPQ_200 _MGQ_100 49 191
U5PN_400 _MGN_101 22 92
U5PR_400 _MGR_101 22 89
2igb U5PC_351 21 81 Details
U5PB_352 21 81
U5PD_352 21 83
U5PA_351 21 78
v6.0
October 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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