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1a26
From Proteopedia
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|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=CNA:CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>CNA</scene> | |LIGAND= <scene name='pdbligand=CNA:CARBA-NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>CNA</scene> | ||
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/NAD(+)_ADP-ribosyltransferase NAD(+) ADP-ribosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.30 2.4.2.30] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/NAD(+)_ADP-ribosyltransferase NAD(+) ADP-ribosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.30 2.4.2.30] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a26 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a26 OCA], [http://www.ebi.ac.uk/pdbsum/1a26 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1a26 RCSB]</span> | ||
}} | }} | ||
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[[Category: Ruf, A.]] | [[Category: Ruf, A.]] | ||
[[Category: Schulz, G E.]] | [[Category: Schulz, G E.]] | ||
| - | [[Category: CNA]] | ||
[[Category: glycosyltransferase]] | [[Category: glycosyltransferase]] | ||
[[Category: nad(+) adp-ribosyltransferase]] | [[Category: nad(+) adp-ribosyltransferase]] | ||
[[Category: transferase]] | [[Category: transferase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:31:26 2008'' |
Revision as of 15:31, 30 March 2008
| |||||||
| , resolution 2.25Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | NAD(+) ADP-ribosyltransferase, with EC number 2.4.2.30 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
THE CATALYTIC FRAGMENT OF POLY(ADP-RIBOSE) POLYMERASE COMPLEXED WITH CARBA-NAD
Overview
The binding site for the acceptor substrate poly(ADP-ribose) in the elongation reaction of the ADP-ribosyl transferase poly(ADP-ribose) polymerase (PARP) was detected by cocrystallizing the enzyme with an NAD+ analogue. The site was confirmed by mutagenesis studies. In conjunction with the binding site of the donor NAD+, the bound acceptor reveals the geometry of the elongation reaction. It shows in particular that the strictly conserved glutamate residue of all ADP-ribosylating enzymes (Glu988 of PARP) facilitates the reaction by polarizing both, donor and acceptor. Moreover, the binding properties of the acceptor site suggest a mechanism for the branching reaction, that also explains the dual specificity of this transferase for elongation and branching, which is unique among polymer-forming enzymes.
About this Structure
1A26 is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.
Reference
The mechanism of the elongation and branching reaction of poly(ADP-ribose) polymerase as derived from crystal structures and mutagenesis., Ruf A, Rolli V, de Murcia G, Schulz GE, J Mol Biol. 1998 Apr 24;278(1):57-65. PMID:9571033
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