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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1h73
TRANSFERASE HEADER
CRYSTAL STRUCTURE OF HOMOSERINE KINASE COMPLEXED WITH THREONINE 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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THR A 401
16A ALA
17A ASN
22A PHE
23A ASP
138A HIS
140A ASP
141A ASN
183A THR
187A ARG
235A ARG
260A GLY
261A SER
THR C 401
16C ALA
17C ASN
22C PHE
23C ASP
138C HIS
140C ASP
141C ASN
183C THR
187C ARG
235C ARG
260C GLY
261C SER
ANP B 418
54A ASN
55A ILE
56A PRO
61A LYS
62A ASN
63A VAL
85A ILE
87A LYS
91A ALA
92A GLY
93A SER
94A GLY
95A LEU
96A GLY
97A SER
98A SER
99A ALA
101A SER
130A GLU
133A SER
141A ASN
181A ILE
182A ASN
183A THR
260A GLY
261A SER
262A GLY
ANP D 418
54C ASN
55C ILE
56C PRO
61C LYS
62C ASN
63C VAL
85C ILE
87C LYS
91C ALA
92C GLY
93C SER
94C GLY
95C LEU
96C GLY
97C SER
98C SER
99C ALA
101C SER
130C GLU
133C SER
141C ASN
181C ILE
182C ASN
183C THR
260C GLY
261C SER
262C GLY
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
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).

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apo-structure
pdb ID
1fwl Details
other holo-structures
pdb ID Ligand Unique ID
1h74 ILEC_500 SAPD_400 _MGE_600 Details
ADPG_400
ADPB_400
ILEH_500 SAPI_400
1h72 ANPF1301 HSEG1300 Details
ANPB1301 HSEC1300
1fwk ADPD_700 Details
ADPF_800
ADPB_600
ADPH_900 _MGI_597
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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ANP NAME: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
FORMULA: C10 H17 N6 O12 P3
SMILES: Nc1ncnc2[n](cnc12)C3OC(COP(O)(=O)OP(O)(=O)NP(O)(O)=O)C(O)C3O
THR NAME: L-Threonine
FORMULA: C4 H8 N1 O3
SMILES: CC(O)C(N)C(O)=OTHREONINE
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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