1lbe
APLYSIA ADP RIBOSYL CYCLASE
OverviewOverview
ADP ribosyl cyclase synthesizes the novel secondary messenger cyclic ADP ribose (cADPR) utilizing NAD as a substrate. The enzyme shares extensive sequence similarity with two lymphocyte antigens, CD38 and BST-1, which hydrolyse as well as synthesize cADPR. The crystal structure provides a model for these cell surface enzymes. Cyclase contains two spatially separated pockets composed of sequence conserved residues, suggesting that the cyclization reaction may entail use of distinct sites. The enzyme dimer encloses a cavity which may entrap the intermediate, ADP ribose.
About this StructureAbout this Structure
1LBE is a Single protein structure of sequence from Aplysia californica. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of Aplysia ADP ribosyl cyclase, a homologue of the bifunctional ectozyme CD38., Prasad GS, McRee DE, Stura EA, Levitt DG, Lee HC, Stout CD, Nat Struct Biol. 1996 Nov;3(11):957-64. PMID:8901875 Page seeded by OCA on Fri May 2 23:45:16 2008