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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1ulf
SUGAR BINDING PROTEIN HEADER
CGL2 IN COMPLEX WITH BLOOD GROUP A TETRASACCHARIDE 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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NGA G 1
36B THR
38B VAL
40B ASN
51B HIS
53B SER
66B ARG
72B TRP
126B ASN
127B ALA
NGA F 1
36C THR
38C VAL
40C ASN
51C HIS
53C SER
55C ARG
66C ARG
72C TRP
126C ASN
127C ALA
NGA E 1
36A THR
38A VAL
40A ASN
51A HIS
53A SER
55A ARG
66A ARG
72A TRP
126A ASN
127A ALA
NGA H 1
36D THR
38D VAL
40D ASN
51D HIS
53D SER
66D ARG
72D TRP
126D ASN
127D ALA
GAL G 2
51B HIS
53B SER
55B ARG
62B VAL
64B ASN
72B TRP
75B GLU
GAL F 2
51C HIS
53C SER
55C ARG
62C VAL
64C ASN
72C TRP
75C GLU
GAL E 2
51A HIS
53A SER
55A ARG
62A VAL
64A ASN
72A TRP
75A GLU
GAL H 2
51D HIS
53D SER
55D ARG
62D VAL
64D ASN
72D TRP
75D GLU
FUC G 21
55B ARG
58B GLU
GLC G 3
55B ARG
58B GLU
72B TRP
75B GLU
77B ARG
FUC F 21
55C ARG
58C GLU
GLC F 3
55C ARG
58C GLU
72C TRP
75C GLU
77C ARG
FUC E 21
55A ARG
58A GLU
GLC E 3
55A ARG
58A GLU
72A TRP
75A GLU
77A ARG
FUC H 21
55D ARG
58D GLU
GLC H 3
55D ARG
58D GLU
72D TRP
75D GLU
77D 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
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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
1ul9 Details
other holo-structures
pdb ID Ligand Unique ID
1uld FUCB__21 NAGB___3 GALB___2 Details
1ule GALG___1 NAGG___3 GALG___2 Details
GALH___1 NAGH___3 GALH___2
GALE___1 GALE___2 NAGE___3
GALF___1 GALF___2 NAGF___3
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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FUC NAME: FUCOSE
FORMULA: C6 H12 O5
SMILES: CC1OC(O)C(O)C(O)C1O
NGA NAME: N-ACETYL-D-GALACTOSAMINE
FORMULA: C8 H15 N1 O6
SMILES: CC(=O)NC1C(O)OC(CO)C(O)C1O
GLC NAME: GLUCOSE
FORMULA: C6 H12 O6
SMILES: OCC1OC(O)C(O)C(O)C1O
GAL NAME: D-GALACTOSE
FORMULA: C6 H12 O6
SMILES: OCC1OC(O)C(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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