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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1h74
TRANSFERASE HEADER
CRYSTAL STRUCTURE OF HOMOSERINE KINASE COMPLEXED WITH ILE TITLE
HOMOSERINE KINASE 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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ILE B 500
16B ALA
17B ASN
22B PHE
23B ASP
94B GLY
138B HIS
140B ASP
141B ASN
183B THR
187B ARG
235B ARG
260B GLY
261B SER
ADP A 400
50A VAL
54A ASN
55A ILE
56A PRO
61A LYS
62A ASN
63A VAL
85A ILE
87A LYS
90A LYS
91A ALA
92A GLY
93A SER
94A GLY
96A GLY
97A SER
98A SER
99A ALA
101A SER
130A GLU
133A SER
134A SER
138A HIS
182A ASN
183A THR
500A ILE
SAP B 400
54B ASN
55B ILE
56B PRO
61B LYS
62B ASN
63B VAL
85B ILE
87B LYS
90B LYS
91B ALA
92B GLY
93B SER
94B GLY
95B LEU
96B GLY
97B SER
98B SER
101B SER
133B SER
134B SER
138B HIS
141B ASN
183B THR
261B SER
262B GLY
500B ILE
MG B 600
96B GLY
98B SER
99B ALA
130B GLU
134B SER
141B ASN
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).

Clicking the blue 'Hide table of related structures' button removes the entire table.

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apo-structure
pdb ID
1fwl Details
other holo-structures
pdb ID Ligand Unique ID
1h72 ANPA1301 HSEA1300 Details
ANPC1301 HSEC1300
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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ILE NAME: L-Isoleucine
FORMULA: C6 H12 N1 O2
SMILES: CCC(C)C(N)C(O)=OISOLEUCINE
SAP NAME: ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE
FORMULA: C10 H16 N5 O12 P3 S1
SMILES: Nc1ncnc2[n](cnc12)C3OC(COP(O)(=O)OP(O)(=O)OP(O)(O)=S)C(O)C3O
MG NAME: MAGNESIUM ION
FORMULA: MG1
SMILES: [Mg++]
ADP NAME: ADENOSINE-5'-DIPHOSPHATE
FORMULA: C10 H15 N5 O10 P2
SMILES: Nc1ncnc2[n](cnc12)C3OC(COP(O)(=O)OP(O)(O)=O)C(O)C3O
v6.0
October 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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