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cyclic guanosine monophosphate : ウィキペディア英語版 | cyclic guanosine monophosphate
| Section2 = | Section3 = }} Cyclic guanosine monophosphate (cGMP) is a cyclic nucleotide derived from guanosine triphosphate (GTP). cGMP acts as a second messenger much like cyclic AMP. Its most likely mechanism of action is activation of intracellular protein kinases in response to the binding of membrane-impermeable peptide hormones to the external cell surface. == Synthesis ==
Guanylate cyclase (GC) catalyzes cGMP synthesis. This enzyme converts GTP to cGMP. In turn, peptide hormones such as the atrial natriuretic factor activate membrane-bound GC, while soluble GC is typically activated by nitric oxide to stimulate cGMP synthesis. And sGC can be inhibit by ODQ ( a soluble guanylate cyclase inhibitor).
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