Tetraploid strains of Saccharomyces cerevisiae carrying different dosages of the CYR1+ gene have been constructed. Adenylate cyclase activity observed in these tetraploid strains was proportional to the dosage of the active CYR1+ gene. Of the 57 mutants requiring adenosine 3',5'-monophosphate for growth at 35 degrees C, two allelic temperature-sensitive cyr1 mutants produced thermolabile adenyl...

We have identified a novel Ras-interacting protein from Dictyostelium, RIP3, whose function is required for both chemotaxis and the synthesis and relay of the cyclic AMP (cAMP) chemoattractant signal. rip3 null cells are unable to aggregate and lack receptor activation of adenylyl cyclase but are able, in response to cAMP, to induce aggregation-stage, postaggregative, and cell-type-specific gen...

Natriuretic peptides and nitric oxide play important roles in cardiovascular and renal physiology and disease. The natriuretic peptides - atrial natriuretic peptide, brain natriuretic peptide, and C-type natriuretic peptide - comprise a family of proteins that participate in the integrated control of intravascular volume and arterial blood pressure. The natriuretic peptides differentially bind ...

Guanylyl cyclase activating proteins (GCAPs) are calcium/magnesium binding proteins within neuronal calcium sensor proteins group (NCS) of the EF-hand proteins superfamily. GCAPs activate retinal guanylyl cyclase (RetGC) in vertebrate photoreceptors in response to light-dependent fall of the intracellular free Ca(2+) concentrations. GCAPs consist of four EF-hand domains and contain N-terminal f...

Cenderitide (CD-NP), a novel peptide designed to activate both guanylyl cyclase B and A, activates the second messenger cGMP, suppresses aldosterone, and preserves GFR without reducing blood pressure in a proof-of-concept study in patients with chronic heart failure Lisa C Costello-Boerrigter, John A Schirger, Wayne L Miller, Guido Boerrigter, Horng H Chen, Ruth Kempf, Candace Y Lee, John C Bur...