Guanylate Cyclase 1 Beta 3 (GUCY1b3)

GC-S-beta-1; GC-SB3; GUC1B3; GUCB3; GUCSB3; Soluble guanylate cyclase small subunit; Guanylate cyclase soluble subunit beta-3

SPN	O802
HGNC	4687
MGI	1860604
PubMed	24041655
RGD	2769
UniProt	Q02153
Wiki	GUCY1B3

Soluble guanylate cyclase (sGC), a heterodimeric protein consisting of an alpha subunit and a beta subunit, typically GUCY1B3, catalyzes conversion of GTP to the second messenger cGMP and functions as the main receptor for nitric oxide (NO) and nitrovasodilator drugs.

NOGC had been considered a soluble enzyme, but evidence that the alpha-2 subunit of the alpha-2/beta-1 isoform interacts with the PDZ domain of PSD95 (DLG4) suggests that the alpha-2 subunit directs a membrane association of this isoform. The interaction with PSD95 locates the alpha-2/beta-1 isoform in close proximity to the NO-generating NO synthase (NOS1), thereby enabling the NO sensor to respond to locally raised NO concentrations.

Reference

"Molecular cloning of the cDNAs coding for the two subunits of soluble guanylyl cyclase from human brain."
FEBS Lett. 304:83-88(1992) [PubMed] [Europe PMC] [Abstract]

"Complete sequencing and characterization of 21,243 full-length human cDNAs."
Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract]

"Generation and annotation of the DNA sequences of human chromosomes 2 and 4."
Nature 434:724-731(2005) [PubMed] [Europe PMC] [Abstract]

"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]

"Heterogeneity in human soluble guanylate cyclase due to alternative splicing."
FEBS Lett. 290:157-158(1991) [PubMed] [Europe PMC] [Abstract]