Cell permeable. A key intermediate in the biosynthesis of nitric oxide by constitutive nitric oxide synthase (cNOS). NOHA can be efficiently oxidized to nitric oxide and citrulline by cytochrome P450 system. A potent inhibitor of liver and macrophage arginase (K_i = 150 µM).

Cell-permeable. A key intermediate product in the biosynthesis of nitric oxide from arginine by constitutive nitric oxide synthase (cNOS). Formed by the NADPH-dependent hydroxylation of L-arginine. NOHA can be efficiently oxidized to nitric oxide and citrulline by cytochrome P450, providing an alternative biosynthetic route for the production of nitric oxide. A potent inhibitor of liver and macrophage arginase (K_i = 150 µM).

Cell permeable: yes

Primary Target
liver and macrophage arginase

Packaged under inert gas

Toxicity: Standard Handling (A)

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

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Wallace, G.C., et al. 1991. Biochem. Biophys. Res. Commun.176, 528.
Zembowicz, A., et al. 1991. Proc. Natl. Acad. Sci. USA88, 11172.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany