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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2pem
CHAPERONE HEADER
CRYSTAL STRUCTURE OF RBCX IN COMPLEX WITH SUBSTRATE TITLE
ORF134 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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PHE A 464
13A THR
16A SER
17A TYR
20A TYR
50A ILE
51A GLN
462A PHE
463A GLU
465A ASP
PHE A 462
13B THR
16B SER
17B TYR
20B TYR
50B ILE
51B GLN
461A LYS
463A GLU
464A PHE
ASP A 465
17A TYR
20A TYR
51B GLN
52B GLU
463A GLU
464A PHE
ILE A 460
20B TYR
23B VAL
24B ARG
27B SER
41B LEU
42B GLY
45B SER
50B ILE
56B TYR
459A GLU
460B ILE
461A LYS
LYS A 461
20B TYR
50B ILE
51B GLN
459A GLU
460A ILE
462A PHE
463A GLU
ILE B 460
24B ARG
459A GLU
460A ILE
GLU A 459
24B ARG
460A ILE
461A LYS
GLU A 463
51A GLN
461A LYS
462A PHE
464A PHE
465A 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):

» 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).

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

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apo-structure
pdb ID
2peq Details
other holo-structures
pdb ID Ligand Unique ID
none
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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ASP NAME: L-Aspartic acid
FORMULA: C4 H6 N1 O4
SMILES: NC(CC(O)=O)C(O)=OASPARTIC ACID
ILE NAME: L-Isoleucine
FORMULA: C6 H12 N1 O2
SMILES: CCC(C)C(N)C(O)=OISOLEUCINE
PHE NAME: PHENYLALANINE
FORMULA: C9 H10 N1 O2
SMILES: NC(Cc1ccccc1)C(O)=OPHENYLALANINE
LYS NAME: L-Lysine
FORMULA: C6 H14 N2 O2
SMILES: NC(CCCC[NH3])C(O)=OLYSINE
GLU NAME: L-Glutamic acid
FORMULA: C5 H8 N1 O4
SMILES: NC(CCC(O)=O)C(O)=OGLUTAMIC ACID
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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