Guanylyl cyclases

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

Humans express four soluble (α1, γ2, α1, γ2) guanylyl cyclase subunits and five single membrane-spanning (GC-A, GC-B, GC-C, GC-E, and GC-F) forms. The soluble forms exist as heterodimers and the transmembrane members exist as homeric structures containing at least two molecules per complex. The primary and best-studied endogenous activator of soluble guanylyl cyclase (sGC) is nitric oxide (NO) originally described as endothelium-derived relaxing factor for its potent ability to relax blood vessels in response to vasodilators such as acetylcholine or bradykinin. The transmembrane guanylyl cyclases are homodimers that are activated by peptides. The best-characterized transmembrane guanylyl cyclase is NPR-A, which is also called GC-A or NPR1. It binds and is activated by atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP). NPR-A is phosphorylated on four serines and two threonines within the amino-terminal portion of its kinase homology domain in the unstimulated state. The natriuretic peptide clearance receptor, which is also called NPR-C or NPR3, shares 35 percent amino acid identity with NPR-A and NPR-B in its extracellular domain, and binds all three known natriuretic peptides with similar affinities. It also binds osteocrin, which acts a decoy ligand to increase CNP levels in bone tissue. NPR-C is expressed in most tissues, usually at levels that are significantly higher than those of NPR-A or NPR-B. NPR-B, which is also called GC-B or NPR2, has a similar topology to NPR-A but is activated by CNP, which exists in 22 and 53 amino acid forms, neither of which are stored in granules. CNP does not circulate at high levels; rather, it signals in a paracrine manner.

Original languageEnglish (US)
Title of host publicationHandbook of Cell Signaling, 2/e
PublisherElsevier Inc.
Pages1399-1407
Number of pages9
Volume2
ISBN (Print)9780123741455
DOIs
StatePublished - Dec 1 2010

Fingerprint

Guanylate Cyclase
Natriuretic Peptides
Amino Acids
Endothelium-Dependent Relaxing Factors
Peptide Receptors
Brain Natriuretic Peptide
Atrial Natriuretic Factor
Bradykinin
Threonine
Tissue
Vasodilator Agents
Serine
Acetylcholine
Blood Vessels
Blood vessels
Nitric Oxide
Phosphotransferases
Ligands
Bone and Bones
Peptides

Cite this

Potter, L. R. (2010). Guanylyl cyclases. In Handbook of Cell Signaling, 2/e (Vol. 2, pp. 1399-1407). Elsevier Inc.. https://doi.org/10.1016/B978-0-12-374145-5.00172-8

Guanylyl cyclases. / Potter, Lincoln R.

Handbook of Cell Signaling, 2/e. Vol. 2 Elsevier Inc., 2010. p. 1399-1407.

Research output: Chapter in Book/Report/Conference proceedingChapter

Potter, LR 2010, Guanylyl cyclases. in Handbook of Cell Signaling, 2/e. vol. 2, Elsevier Inc., pp. 1399-1407. https://doi.org/10.1016/B978-0-12-374145-5.00172-8
Potter LR. Guanylyl cyclases. In Handbook of Cell Signaling, 2/e. Vol. 2. Elsevier Inc. 2010. p. 1399-1407 https://doi.org/10.1016/B978-0-12-374145-5.00172-8
Potter, Lincoln R. / Guanylyl cyclases. Handbook of Cell Signaling, 2/e. Vol. 2 Elsevier Inc., 2010. pp. 1399-1407
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