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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1isx
HYDROLASE HEADER
CRYSTAL STRUCTURE OF XYLANASE FROM STREPTOMYCES OLIVACEOVIRIDIS E-86 COMPLEXED WITH XYLOTRIOSE TITLE
ENDO-1,4-BETA-D-XYLANASE 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 C 451
44A GLU
45A ASN
48A LYS
85A TRP
88A GLN
266A TRP
274A TRP
XYS C 450
45A ASN
88A GLN
XYS C 452
48A LYS
81A HIS
85A TRP
127A ASN
128A GLU
205A GLN
207A HIS
236A GLU
266A TRP
274A TRP
XYS D 456
85A TRP
128A GLU
172A TYR
205A GLN
207A HIS
274A TRP
275A ARG
XYS D 457
132A ASP
172A TYR
173A ASN
179A TRP
207A HIS
209A ASN
211A GLY
212A SER
275A ARG
XYS G 951
544B GLU
545B ASN
548B LYS
585B TRP
588B GLN
766B TRP
774B TRP
XYS G 950
545B ASN
550B ASP
588B GLN
XYS G 952
548B LYS
581B HIS
585B TRP
627B ASN
628B GLU
705B GLN
707B HIS
736B GLU
766B TRP
774B TRP
XYS H 956
585B TRP
587B SER
628B GLU
672B TYR
705B GLN
707B HIS
774B TRP
775B ARG
XYS H 957
632B ASP
672B TYR
673B ASN
707B HIS
709B ASN
712B SER
775B ARG
XYS H 958
632B ASP
673B ASN
679B TRP
711B GLY
712B SER
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).

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apo-structure
pdb ID
1xyf Details
other holo-structures
pdb ID Ligand Unique ID
1v6x GCVC_449 XYSC_452 XYSC_450 XYSD_457 XYSD_456 XYSC_451 Details
GCVE_459 XYSE_462 XYSE_461 XYSE_460
GCVG_949 XYSG_950 XYSH_957 XYSH_956 XYSG_952 XYSG_951
1isw XYSG_951 XYSH_956 XYSG_952 XYSH_957 Details
XYSC_451 XYSC_452 XYSD_457 XYSD_456
1v6u AHRG_950 XYSH_957 XYSH_956 XYSG_952 XYSG_951 Details
AHRF_469 XYSF_470 XYSF_471
XYSC_451 XYSC_452 XYSD_457 XYSD_456
1v6v AHRC_449 XYSC_452 XYSC_450 XYSD_457 XYSD_456 XYSC_451 Details
XYSE_461 XYSE_462 XYSE_463
AHRG_949 XYSG_950 XYSH_957 XYSH_956 XYSG_952 XYSG_951
AHRF_470 XYSF_472 XYSF_473 XYSF_471 XYSI_473
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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XYS NAME: XYLOPYRANOSE
FORMULA: C5 H10 O5
SMILES: OC1COC(O)C(O)C1O
v4.0
May 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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