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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3beo
ISOMERASE HEADER
A STRUCTURAL BASIS FOR THE ALLOSTERIC REGULATION OF NON- HYDROLYZING UDP-GLCNAC 2-EPIMERASES TITLE
UDP-N-ACETYLGLUCOSAMINE 2-EPIMERASE 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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UD1 B 372
13B THR
14B ARG
15B PRO
43B GLN
44B HIS
45B ARG
46B GLN
47B MET
66B MET
67B LYS
68B ASP
69B ARG
70B GLN
72B LEU
75B ILE
100B ASP
101B THR
102B THR
135B PRO
136B GLU
139B ASN
209B HIS
210B ARG
211B ARG
242B HIS
243B MET
244B ASN
245B PRO
UD1 A 372
13A THR
14A ARG
15A PRO
43A GLN
44A HIS
45A ARG
46A GLN
47A MET
66A MET
67A LYS
68A ASP
69A ARG
70A GLN
72A LEU
75A ILE
100A ASP
101A THR
102A THR
135A PRO
136A GLU
139A ASN
209A HIS
210A ARG
211A ARG
242A HIS
243A MET
244A ASN
245A PRO
UDP B1081
14B ARG
15B PRO
18B ILE
19B LYS
51B VAL
100B ASP
101B THR
207B THR
209B HIS
210B ARG
240B PRO
266B PRO
267B LEU
269B VAL
272B PHE
273B HIS
286B SER
287B GLY
288B GLY
289B VAL
292B GLU
UDP A1081
14A ARG
15A PRO
18A ILE
19A LYS
100A ASP
101A THR
207A THR
209A HIS
210A ARG
240A PRO
266A PRO
267A LEU
269A VAL
272A PHE
273A HIS
286A SER
287A GLY
288A GLY
289A VAL
292A GLU
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):

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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
1k32 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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UD1 NAME: URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
FORMULA: C17 H27 N3 O17 P2
SMILES: CC(=O)NC1C(O)C(O)C(CO)OC1OP(O)(=O)OP(O)(=O)OCC2OC(C(O)C2O)N3C=CC(=O)NC3=O
UDP NAME: URIDINE-5'-DIPHOSPHATE
FORMULA: C9 H14 N2 O12 P2
SMILES: OC1C(O)C(OC1COP(O)(=O)OP(O)(O)=O)N2C=CC(=O)NC2=O
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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