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Open AccessJournal ArticleDOI

Organization and Ca2+ Regulation of Adenylyl Cyclases in cAMP Microdomains

Debbie Willoughby, +1 more
- 01 Jul 2007 - 
- Vol. 87, Iss: 3, pp 965-1010
TLDR
The regulation of many of the ACs by the ubiquitous second messenger Ca(2+) provides an overarching mechanism for integrating the activities of these two major signaling systems, and cAMP will exhibit distinct kinetics in discrete cellular domains.
Abstract
The adenylyl cyclases are variously regulated by G protein subunits, a number of serine/threonine and tyrosine protein kinases, and Ca2+. In some physiological situations, this regulation can be re...

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Citations
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A novel biosensor to study cAMP dynamics in cilia and flagella

TL;DR: A novel FRET-based cAMP biosensor with nanomolar sensitivity that is out of reach for other sensors is introduced with unique characteristics that allow gaining new insights into cAMP signaling and unravel the molecular mechanisms underlying ciliary function in vitro and in vivo.
Journal ArticleDOI

G Protein-coupled Receptor-promoted Trafficking of Gβ1γ2 Leads to AKT Activation at Endosomes via a Mechanism Mediated by Gβ1γ2-Rab11a Interaction

TL;DR: In this article, the authors show that Gβγ interacts with Rab11a and that the two proteins colocalize at early and recycling endosomes in response to activation of lysophosphatidic acid (LPA) receptors.
Journal ArticleDOI

Structural basis for inhibition of mammalian adenylyl cyclase by calcium

TL;DR: Type V and VI mammalian adenylyl cyclases (AC5, AC6) are inhibited by Ca(2+) at both sub- and supramicromolar concentration, allowing fine control of cardiac contraction and rhythmicity in cardiac tissue where AC5 and AC6 predominate.
References
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Journal ArticleDOI

Lipid rafts and signal transduction

TL;DR: It is now becoming clear that lipid micro-environments on the cell surface — known as lipid rafts — also take part in this process of signalling transduction, where protein–protein interactions result in the activation of signalling cascades.
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Store-operated calcium channels.

TL;DR: The key electrophysiological features of I(CRAC) and other store-operated Ca(2+) currents and how they are regulated are described, and recent advances that have shed insight into the molecular mechanisms involved in this ubiquitous and vital Ca( 2+) entry pathway are considered.
Journal ArticleDOI

Cyclic nucleotide phosphodiesterases: functional implications of multiple isoforms

TL;DR: This article reviews many of the more important aspects about the structure, cellular localization, and regulation of each family of phosphodiesterases and places particular emphasis on new information obtained in the last few years about how differential expression andregulation of individual phosphodiesters relate to their function(s) in the body.
Journal ArticleDOI

The role of hormone receptors and GTP-regulatory proteins in membrane transduction

TL;DR: Cell membrane receptors for hormones and neurotransmitters form oligomeric complexes with GTP-regulatory proteins and inhibit the latter from reacting with G TP, and this theory may apply generally to membrane signal transduction involving surface receptors.
Journal ArticleDOI

Lipid Rafts: Elusive or Illusive?

TL;DR: There has been considerable recent interest in the possibility that the plasma membrane contains lipid "rafts," microdomains enriched in cholesterol and sphingolipids, and it seems that a definitive proof of raft existence has yet to be obtained.
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