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© Marie Prévost, Institut Pasteur
Image of a portion of a Xenopus oocyte expressing a channel receptor.
Publication : Postepy biochemii

[The role of ectonucleotides metabolizing enzymes in purinergic signaling]

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Postepy biochemii - 01 Jan 2011

Porowińska D, Czarnecka J, Komoszyński M

Link to Pubmed [PMID] – 22235655

Postepy Biochem. 2011;57(3):294-303

Purinergic signaling plays an important role in the regulation of many physiological processes. The concentration of nucleotides in extracellular space is controlled by at least two families of nucleotidases: NPPases and NTPDases. These families are examples of convergent evolution of proteins. Above ezymes are not phylogenetically related, but they catalyze the same type of reaction. They hydrolyzed tri- and diphosphonucleosides to monophosphonucleosides and orthophosphate or pyrophosphate. This degradation terminates the nucleotide signaling process and also produces other signaling molecules like ADP, and with 5′-nucleotidase, adenosine. Most of known animal NPPases and NTPDases were found as membranous ectoenzymes or soluble proteins localized in tissue fluids. The aim of this work is to provide information about localization, structure, properties and function of NPPases and NTPDases in the regulation of extracellular concentration of nucleotides and purinergic signaling.

https://www.ncbi.nlm.nih.gov/pubmed/22235655