Work

Inhibition of soluble guanylyl cyclase by small molecules targeting the catalytic domain

Year: 2016

Type: article

Abstract: Soluble guanylyl cyclase (sGC) plays a crucial role in cyclic nucleotide signaling that regulates numerous important physiological processes. To identify new sGC inhibitors that may prevent the formation of the active catalytic domain conformation, we carried out an in silico docking screen targeting a 'backside pocket' of the inactive sGC catalytic domain structure. Compounds 1 and 2 were discovered to inhibit sGC even at high/saturating nitric oxide concentrations. Both compounds also inhibit the BAY 58-2667-activated sGC as well as BAY 41-2272-stimulated sGC activity. Additional biochemical analyses showed that compound 2 also inhibits the isolated catalytic domain, thus demonstrating functional binding to this domain. Both compounds have micromolar affinity for sGC and are potential leads to develop more potent sGC inhibitors.

Source: FEBS Letters

DOI: 10.1002/1873-3468.12427

Authors: Jagamya Vijayaraghavan, Kristopher Kramp, Michael E. Harris, Focco van den Akker

Institution: Case Western Reserve University

Language: English

Topic: Phosphodiesterase function and regulation

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: University of Cincinnati, National Institutes of Health, National Heart, Lung, and Blood Institute, National Institute of General Medical Sciences