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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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Principles of c-di-GMP signalling in bacteria.

TL;DR: This Review focuses on emerging principles of c-di-GMP signalling using selected systems in different bacteria as examples.
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A Coupled SYSTEM of Intracellular Ca2+ Clocks and Surface Membrane Voltage Clocks Controls the Timekeeping Mechanism of the Heart’s Pacemaker

TL;DR: Evidence is examined that forms the basis of this coupled-clock system concept in cardiac SANCs, where G protein-coupled receptors signaling creates pacemaker flexibility, ie, effects changes in the rhythmic action potential firing rate, by impacting on these very same factors that regulate robust basal coupled- clock system function.
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Caveolae as Organizers of Pharmacologically Relevant Signal Transduction Molecules

TL;DR: The role of Caveolae/caveolin in cardiac and pulmonary pathophysiology, pharmacologic implications of caveolar localization of signaling molecules, and the possibility that caveolae might serve as a therapeutic target are reviewed.
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Underpinning compartmentalised cAMP signalling through targeted cAMP breakdown

TL;DR: Genes for these important regulatory enzymes are linked to schizophrenia, stroke and asthma, thus indicating the therapeutic potential that selective inhibitors could have as anti-inflammatory, anti-depressant and cognitive enhancer agents.
Journal ArticleDOI

Physiological roles for G protein-regulated adenylyl cyclase isoforms: insights from knockout and overexpression studies.

TL;DR: The latest on AC knockout and overexpression studies are explored to better understand the roles of G protein regulation of ACs in the brain, olfactory bulb, and heart.
References
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Journal ArticleDOI

Nicotinic acetylcholine receptor α7 regulates cAMP signal within lipid rafts

TL;DR: It is shown that the nAChR α7-subunit has a property of high Ca2+ permeability and may have specific fun...
Journal ArticleDOI

Voltage-sensitive adenylyl cyclase activity in cultured neurons. A calcium-independent phenomenon.

TL;DR: It is reported that adenylyl cyclase activity in cerebellar neurons is synergistically stimulated by depolarizing agents and β-adrenergic receptor activation, and it is hypothesized that conformational changes in the catalytic subunit of the enzymes caused by change in the membrane potential may enhance stimulation of adenyll cyclases by the guanylyl nucleotide stimulatory protein.
Journal ArticleDOI

Novel Regulatory Properties of Human Type 9 Adenylate Cyclase

TL;DR: It is reported that quinpirole activation of the inhibitory G protein-coupled D2L dopamine receptor inhibits Gαs stimulation of AC9, and the first evidence for regulation of AC 9 by protein kinase C (PKC) is reported.
Journal ArticleDOI

Multiple defects in the activity of adenylate cyclase from the Drosophila memory mutant rutabaga.

TL;DR: It is suggested that rutabaga is lesioned in a subpopulation, or a functional state, of adenylate cyclase, which may play a role in memory formation.
Journal ArticleDOI

β-Adrenergic- and muscarinic receptor-induced changes in cAMP activity in adult cardiac myocytes detected with FRET-based biosensor

TL;DR: An adenovirus-based approach was developed to express this recombinant protein complex in adult cardiac myocytes and use it to monitor changes in cAMP activity produced by beta-adrenergic and muscarinic receptor activation.
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