university lille north of france LigASite database of binding sites
apo-structureHelp

PDB ID and HEADER, TITLE and COMPND records of the PDB file.

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2cpl
ISOMERASE(PEPTIDYL-PROLYL CIS-TRANS) HEADER
SIMILARITIES AND DIFFERENCES BETWEEN HUMAN CYCLOPHILIN A AND OTHER BETA-BARREL STRUCTURES. STRUCTURAL REFINEMENT AT 1.63 ANGSTROMS RESOLUTION TITLE
CYCLOPHILIN A COMPND
Illustration of Binding SiteHelp

Figure highlighting the binding site residues. Figures were drawn with Molscript (7) and rendered with Raster3D (8). PISA coordinates (3) are used when available (all entries except NMR).

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Contacting ResiduesHelp

List of binding site residues detected in this protein.

Column 1 gives the position, coloured on a yellow-to-red scale depending on the fraction of corresponding holo-structures where the residue is in contact with a ligand.
Column 2 gives the 3-letter amino acid code, coloured according to physico-chemical type.

Chain ID's of residues are not mentioned in this page because all chains in the apo-structure refer to the same protein.

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54 HIS
55 ARG
57 ILE
60 PHE
61 MET
63 GLN
67 PHE
69 ARG
71 ASN
72 GLY
73 THR
74 GLY
75 GLY
82 LYS
101 ALA
102 ASN
103 ALA
104 GLY
107 THR
109 GLY
110 SER
111 GLN
113 PHE
121 TRP
122 LEU
125 LYS
126 HIS
148 ARG
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:

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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holo-structuresHelp

Table describing the holo-structures and ligands used to define the binding sites.

Column 1 gives the PDB ID of the holo-structure.
Column 2 gives the unique ID of the ligand; a space-separated list of HET-groups that constitute the ligand (see Methods). Each HET-group in the ligand is uniquely identified by a string in which the first four characters are the three-letter HET ID from the PDB file followed by the chain ID from the PISA file, and the last four characters are the residue sequence number from the PDB file.
Column 3 gives the number of atoms in each ligand.
Column 4 gives the number of protein-ligand inter-atomic contacts.

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pdb ID Ligand Unique ID #atoms #contacts
1mik BMTB___1 DHNB___2 MLEB___4 SARB___3 35 94 Details
1nmk SFMA_101 53 112 Details
1m63 ABAD___2 SARD___3 MLED___4 BMTD___1 33 124 Details
1cwb ABAC___2 DMTC___1 SARC___3 MLEC___4 34 81 Details
3cys ABAB_202 SARB_203 BMTB_201 MLEB_204 43 99 Details
1cwc ABAC___2 BMTC___1 SARC___3 MNLC___4 34 76 Details
1mf8 ABAD___2 MLED___4 SARD___3 BMTD___1 33 126 Details
1cwa ABAC___2 BMTC___1 SARC___3 MLEC___4 33 75 Details
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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