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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2tpi
COMPLEX (PROTEINASE/INHIBITOR) HEADER
ON THE DISORDERED ACTIVATION DOMAIN IN TRYPSINOGEN. CHEMICAL LABELLING AND LOW-TEMPERATURE CRYSTALLOGRAPHY TITLE
TRYPSINOGEN 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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VAL C 17
19B GLY
143B ASN
144B THR
145B LYS
146B SER
158B LEU
188B GLY
189B ASP
191B CYS
220B CYS
221B ALA
VAL F 17
19E GLY
143E ASN
144E THR
145E LYS
146E SER
158E LEU
188E GLY
189E ASP
191E CYS
220E CYS
221E ALA
VAL S 17
19Z GLY
143Z ASN
144Z THR
145Z LYS
146Z SER
158Z LEU
188Z GLY
189Z ASP
191Z CYS
220Z CYS
221Z ALA
VAL J 17
19G GLY
143G ASN
144G THR
145G LYS
146G SER
158G LEU
188G GLY
189G ASP
191G CYS
220G CYS
221G ALA
ILE C 16
19B GLY
138B ILE
139B SER
140B GLY
142B GLY
143B ASN
144B THR
156B LYS
157B CYS
158B LEU
189B ASP
190B SER
191B CYS
194B ASP
ILE F 16
19E GLY
138E ILE
139E SER
140E GLY
142E GLY
143E ASN
144E THR
156E LYS
157E CYS
158E LEU
189E ASP
190E SER
191E CYS
194E ASP
ILE S 16
19Z GLY
138Z ILE
139Z SER
140Z GLY
142Z GLY
143Z ASN
144Z THR
156Z LYS
157Z CYS
158Z LEU
189Z ASP
190Z SER
191Z CYS
194Z ASP
ILE J 16
19G GLY
138G ILE
139G SER
140G GLY
142G GLY
143G ASN
144G THR
156G LYS
157G CYS
158G LEU
189G ASP
190G SER
191G CYS
194G ASP
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).

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apo-structure
pdb ID
1tgn Details
other holo-structures
pdb ID Ligand Unique ID
3tpi ILEC__16 VALC__17 Details
ILEF__16 VALF__17
ILES__16 VALS__17
ILEJ__16 VALJ__17
4tpi VALC__16 VALC__17 Details
VALF__16 VALF__17
VALS__16 VALS__17
VALJ__16 VALJ__17
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
VAL NAME: L-Valine
FORMULA: C5 H10 N1 O2
SMILES: CC(C)C(N)C(O)=OVALINE
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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