منابع مشابه
Nucleotidyl cyclase activity of soluble guanylyl cyclase in intact cells.
Soluble guanylyl cyclase (sGC) is activated by nitric oxide (NO) and generates the second messenger cyclic GMP (cGMP). Recently, purified sGC α1β1 has been shown to additionally generate the cyclic pyrimidine nucleotides cCMP and cUMP. However, since cyclic pyrimidine nucleotide formation occurred only the presence of Mn(2+) but not Mg(2+), the physiological relevance of these in vitro findings...
متن کاملNucleotidyl cyclase activity of recombinant soluble guanylyl cyclase
Background The ubiquitously expressed soluble guanylyl cyclase (sGC) converts guanosine 5'-triphosphate (GTP) to guanosine 3':5'-cyclic monophosphate (cGMP). The heterodimeric protein is activated by nitric oxide (NO). sGC plays a key role in the regulation of vascular tone and neurotransmission. Hence, sGC is an important target for the treatment of cardiovascular diseases e.g. pulmonary hyper...
متن کاملNucleotidyl Cyclase Activity of Particulate Guanylyl Cyclase A: Comparison with Particulate Guanylyl Cyclases E and F, Soluble Guanylyl Cyclase and Bacterial Adenylyl Cyclases Cyaa and Edema Factor
Guanylyl cyclases (GCs) regulate many physiological processes by catalyzing the synthesis of the second messenger cGMP. The GC family consists of seven particulate GCs (pGCs) and a nitric oxide-activated soluble GC (sGC). Rat sGC α1β1 possesses much broader substrate specificity than previously assumed. Moreover, the exotoxins CyaA from Bordetella pertussis and edema factor (EF) from Bacillus a...
متن کاملForced Homodimerization by Site-Directed Mutagenesis Alters Guanylyl Cyclase Activity
Natriuretic peptides mediate their physiologic effects through activation of membrane-bound, guanylyl cyclase–coupled receptors (NPRs). Receptor dimerization is an important feature of signal transduction. This study was aimed at characterizing structurally important residues of the extracellular ligand-binding domain of NPR-B for receptor dimerization and cGMP generation. Deletion mutagenesis ...
متن کاملUnilateral ureteral obstruction increases glomerular soluble guanylyl cyclase activity.
RBF and GFR are decreased in kidneys after ipsilateral unilateral ureteral obstruction (UUO) for 24 h. Despite net vasoconstriction, vasodilatory mechanisms respond to counterbalance the vasoconstriction: the inhibition of nitric oxide synthase activity is associated with a greater reduction in RBF with ipsilateral UUO. To determine whether the stimulation of soluble guanylyl cyclase differs be...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2011
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1101007108