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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2xyl
HYDROLASE HEADER
CELLULOMONAS FIMI XYLANASE/CELLULASE COMPLEXED WITH 2-DEOXY- 2-FLUORO-XYLOBIOSE TITLE
BETA-1,4-GLYCANASE 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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XYS B 601
43B GLU
44B ASN
47B LYS
84B TRP
87B GLN
273B TRP
281B TRP
285B VAL
XYS A 601
43A GLU
44A ASN
47A LYS
84A TRP
87A GLN
273A TRP
281A TRP
285A VAL
X2F B 602
47B LYS
80B HIS
84B TRP
126B ASN
127B GLU
203B GLN
205B HIS
233B GLU
273B TRP
281B TRP
X2F A 602
47A LYS
80A HIS
84A TRP
126A ASN
127A GLU
203A GLN
205A HIS
233A GLU
273A TRP
281A TRP
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
2exo Details
other holo-structures
pdb ID Ligand Unique ID
1j01 XILB_601 Details
1fhd XIMC_602 XYSC_601 Details
XIMD_602 XYSD_601
1fh9 LOXD_602 XYSD_601 Details
LOXC_602 XYSC_601
1fh8 XIFD_602 XYSD_601 Details
XIFC_602 XYSC_601
1exp G2F__602 GLC__601 Details
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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X2F NAME: 2-DEOXY-2-FLUORO XYLOPYRANOSE
FORMULA: C5 H9 O4 F1
SMILES: OC1COC(O)C(F)C1O
XYS NAME: XYLOPYRANOSE
FORMULA: C5 H10 O5
SMILES: OC1COC(O)C(O)C1O
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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