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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3i8x
TRANSPORT PROTEIN HEADER
STRUCTURE OF THE CYTOSOLIC DOMAIN OF E. COLI FEOB, GDP-BOUND FORM TITLE
FERROUS IRON TRANSPORT PROTEIN B 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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GDP B 275
11B ASN
12B PRO
13B ASN
14B SER
15B GLY
16B LYS
17B THR
18B THR
120B ASN
121B MET
123B ASP
124B ILE
149B VAL
150B SER
151B THR
GDP A 275
11A ASN
12A PRO
13A ASN
14A SER
15A GLY
16A LYS
17A THR
18A THR
120A ASN
121A MET
123A ASP
124A ILE
149A VAL
150A SER
151A THR
152A ARG
GDP C 275
11C ASN
12C PRO
13C ASN
14C SER
15C GLY
16C LYS
17C THR
18C THR
120C ASN
121C MET
122C LEU
123C ASP
124C ILE
127C LYS
148C LEU
150C 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):

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
3i8s Details
other holo-structures
pdb ID Ligand Unique ID
3i92 GCPA_800 _MGA_801 Details
GCPB_802 _MGB_803
GCPC_804 _MGC_805
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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GDP NAME: GUANOSINE-5'-DIPHOSPHATE
FORMULA: C10 H15 N5 O11 P2
SMILES: NC1=Nc2[n](cnc2C(=O)N1)C3OC(COP(O)(=O)OP(O)(O)=O)C(O)C3O
v9.7
April 2012
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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