Knowles R G, Merrett M, Salter M, Moncada S
Wellcome Research Laboratories, Beckenham, Kent, U.K.
Biochem J. 1990 Sep 15;270(3):833-6. doi: 10.1042/bj2700833.
Nitric oxide (NO) synthase in rat brain was found to be constitutive and Ca2(+)-dependent. The enzyme in rat lung or liver (predominantly in parenchymal cells) was not constitutive, but was induced by endotoxin treatment and was Ca2(+)-independent. The NO synthases in rat brain and liver or lung are therefore distinct both in their properties and in their regulation.