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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1ule
SUGAR BINDING PROTEIN HEADER
CGL2 IN COMPLEX WITH LINEAR B2 TRISACCHARIDE TITLE
GALECTIN-2 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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GLA K 151
36I THR
38I VAL
51I HIS
53I SER
66I ARG
72I TRP
126I ASN
GLA G 151
36E THR
38E VAL
51E HIS
66E ARG
72E TRP
126E ASN
GLA O 151
36M THR
38M VAL
40M ASN
51M HIS
53M SER
66M ARG
72M TRP
126M ASN
GLA C 151
36A THR
38A VAL
51A HIS
53A SER
66A ARG
72A TRP
126A ASN
GAL B 152
51A HIS
53A SER
55A ARG
62A VAL
64A ASN
72A TRP
75A GLU
GAL J 152
51I HIS
53I SER
55I ARG
62I VAL
64I ASN
72I TRP
75I GLU
GAL F 152
51E HIS
53E SER
55E ARG
62E VAL
64E ASN
72E TRP
75E GLU
GAL N 152
51M HIS
53M SER
55M ARG
62M VAL
64M ASN
72M TRP
75M GLU
NAG L 153
55I ARG
58I GLU
72I TRP
75I GLU
77I ARG
NAG H 153
55E ARG
58E GLU
72E TRP
75E GLU
77E ARG
NAG P 153
55M ARG
58M GLU
72M TRP
75M GLU
77M ARG
NAG D 153
55A ARG
58A GLU
72A TRP
75A GLU
77A ARG
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
1ul9 Details
other holo-structures
pdb ID Ligand Unique ID
1ulf A2GD_151 BGCC_153 FUCE_154 GALB_152 Details
A2GN_151 BGCM_153 FUCO_154 GALL_152
A2GI_151 FUCJ_154 GALG_152 BGCH_153
A2GS_151 BGCR_153 FUCT_154 GALQ_152
1uld FUCP_153 NAGO_152 GALN_151 Details
FUCL_153 GALJ_151 NAGK_152
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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GAL NAME: D-GALACTOSE
FORMULA: C6 H12 O6
SMILES: OCC1OC(O)C(O)C(O)C1O
GLA NAME: ALPHA D-GALACTOSE
FORMULA: C6 H12 O6
SMILES: OCC1OC(O)C(O)C(O)C1O
NAG NAME: N-ACETYL-D-GLUCOSAMINE
FORMULA: C8 H15 N1 O6
SMILES: CC(=O)NC1C(O)OC(CO)C(O)C1O
v9.1
October 2010
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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