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Guanylyl cyclases and signaling by cyclic GMP
K A Lucas1, G M Pitari, S Kazerounian
1Division of Clinical Pharmacology, Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.
Pharmacological Reviews
|September 8, 2000
Summary
Guanylyl cyclases (GCs) are enzymes converting GTP to cGMP, regulating vital cell functions. This review details GC structure, regulation, and their role in physiological and pathological processes.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Physiology
Background:
- Guanylyl cyclases (GCs) are enzymes catalyzing GTP to cyclic GMP (cGMP) production.
- Both membrane-bound and soluble GC isoforms are widely expressed and regulated by various agonists.
- cGMP signaling cascades are crucial for numerous cellular processes.
Purpose of the Study:
- To review the structure, function, and regulation of guanylyl cyclases.
- To explore the molecular mechanisms linking ligand binding to catalytic activity.
- To summarize the downstream effectors and physiological roles of cGMP signaling.
Main Methods:
- Literature review of guanylyl cyclase research.
- Analysis of enzyme structure, gene localization, and protein interactions.
- Synthesis of information on cGMP-mediated signaling pathways.
Main Results:
- Detailed description of GC family members, their isoforms, and chromosomal locations.
- Elucidation of regulatory mechanisms involving extracellular and intracellular molecules.
- Identification of key downstream effectors like protein kinases, phosphodiesterases, and ion channels.
Conclusions:
- Guanylyl cyclases and cGMP signaling are central to diverse physiological processes, including vascular function, intestinal homeostasis, and vision.
- Understanding GC regulation and function is key to comprehending various cell (patho)physiology.
- This review provides a comprehensive overview of the guanylyl cyclase family and its signaling pathways.