Synthesis and characterization of non-hydrolysable diphosphoinositol polyphosphate messengers
Open Access
- 8 October 2012
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Science
- Vol. 4 (1), 405-410
- https://doi.org/10.1039/c2sc21553e
Abstract
The diphosphoinositol polyphosphates (PP-IPs) are a central group of eukaryotic messengers. They regulate numerous processes, including cellular energy homeostasis and adaptation to environmental stresses. To date, most of the molecular details in PP-IP signalling have remained elusive, due to a lack of appropriate methods and reagents. Here we describe the expedient synthesis of methylene-bisphosphonate PP-IP analogues. Their characterization revealed that the analogues exhibit significant stability and mimic their natural counterparts very well. This was further confirmed in two independent biochemical assays, in which our analogues potently inhibited phosphorylation of the protein kinase Akt and hydrolytic activity of the Ddp1 phosphohydrolase. The non-hydrolysable PP-IPs thus emerge as important tools and hold great promise for a variety of applications.Keywords
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