ODQ

Description

ODQ (41443-28-1) is a potent and selective inhibitor of soluble guanylyl cyclase (sGC),?IC50?= 20 nM).1 ODQ acts via competition with NO for the heme site of sGC where it binds irreversibly.2?ODQ does not inhibit NO-mediated macrophage toxicity, an activity that is unrelated to cGMP nor does it inhibit particulate GC.1?ODQ is an extremely useful tool to explore the involvement of the NO-cGMP pathway in cellular signaling and physiologic processes.3-5

Chemical properties

ODQ is off-white to yellow powder

The Uses of ODQ

ODQ is a selective and potent sGC (soluble guanylyl cyclase) inhibitor.

The Uses of ODQ

1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one inhibits neurite outgrowth and causes neurite retraction in PC12 cells independently of soluble guanylyl cyclase.

What are the applications of Application

ODQ is a selective and potent sGC (soluble guanylyl cyclase) inhibitor

Definition

ChEBI: 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one is a member of the class of oxadiazoloquinoxalines that is 1H-[1,2,4]oxadiazolo[4,3-a]quinoxaline substituted at position 1 by an oxo group. It has a role as an EC 4.6.1.2 (guanylate cyclase) inhibitor.

Biological Activity

ODQ is a potent and selective inhibitor of NO-sensitive guanylyl cyclase.

Biochem/physiol Actions

H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) non competitively inhibits the action of nitric oxide-sensitive guanylyl cyclase and results in a supposedly irreversible oxidation of the prosthetic heme group. ODQ has been used to study the role of cyclic guanosine monophosphate (cGMP) pathway in nitric oxide (NO) signal transduction.

Storage

+4°C

References

1) Garthwaite?et al.?(1995),?Potent and Selective Inhibition of Nitric Oxide-sensitive Guanylyl Cyclase by 1H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one; Mol. Pharmacol.?48?184 2) Schrammel?et al.?(1996),?Characterization of 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one as a heme-site inhibitor of nitric oxide-sensitive guanylyl cyclase; Mol. Pharmacol.?50?1 3) Estevez?et al.?(1998),?Nitric oxide-dependent production of cGMP supports the survival of rat embryonic motor neurons cultured with brain-derived neurotrophic factor; J. Neurosci.?18?3708 4) Vandecasteele?et al.?(1998),?Role of the NO-cGMP in the muscarinic regulation of the L-type Ca2+ current in human atrial myocytes; J. Physiol.?506?653 5) Martins-Pinge?et al.?(1999),?Nitric oxide-dependent guanylyl cyclase participates in the glutamatergic neurotransmission within the rostral ventrolateral medulla of awake rats;?Hypertension?34?748