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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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Journal ArticleDOI

Effects of muscarinic receptor stimulation on Ca2+ transient, cAMP production and pacemaker frequency of rabbit sinoatrial node cells.

TL;DR: Functional evidence is provided for the contribution of the Cai2+ transient to ACh-induced inhibition of pacemaker activity and cAMP content in rabbit SAN cells and muscarinic receptor stimulation inhibits theCai2- transient via a cAMP-dependent signaling pathway.
Journal ArticleDOI

cAMP promotes the differentiation of neural progenitor cells in vitro via modulation of voltage-gated calcium channels

TL;DR: Data indicate that the up-regulation of voltage-gated L-type Ca2+-channels and early electrical excitability are critical steps in the cAMP-dependent differentiation of SVZ-derived NPCs into functional neurons.
Journal ArticleDOI

Intermingled cAMP, cGMP and calcium spatiotemporal dynamics in developing neuronal circuits.

TL;DR: Focusing on neuronal polarization, neurotransmitter specification, axon guidance, and refinement of neuronal connectivity, the recent advances in understanding the features of cAMP signals and their dynamic interactions with calcium and cGMP involved in shaping the nervous system are summarized.
Journal ArticleDOI

Calcium-sensitive adenylyl cyclases in depression and anxiety: behavioral and biochemical consequences of isoform targeting.

TL;DR: Data illustrate the complex manner in which Ca(2+)/calmodulin-stimulated ACs contribute to emotional behavior and support the possibility that a selective AC5 antagonist would be of therapeutic value against depression and anxiety disorders.
Journal ArticleDOI

cAMP signaling microdomains and their observation by optical methods.

TL;DR: The optical methods used for monitoring cAMP and protein kinase A (PKA) signaling in living cells are reviewed, providing some examples of their application in neurons, and the major hypotheses on the formation of cAMP/PKA microdomains are discussed.
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.
Journal ArticleDOI

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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