Sassa S, Granick S
Proc Natl Acad Sci U S A. 1970 Oct;67(2):517-22. doi: 10.1073/pnas.67.2.517.
delta-Aminolevulinic acid synthetase is induced in chick embryo liver culture by the natural steroid, etiocholanolone, and by the foreign chemical, 3,5-dicarbethoxy-1,4-dihydrocollidine at the level of transcription. Alternatively, inducing chemicals such as allylisopropylacetamide and gamma-hexachloro-cyclohexane act primarily at the level of translation. Hemin (K(i) = 5 muM) inhibits the induction at the level of translation. In liver cell culture, the half-life of delta-aminolevulinic acid synthetase is 3 hr, that of mRNA about 5 hr.
δ-氨基乙酰丙酸合成酶在鸡胚肝培养物中,可被天然类固醇化合物表雄酮以及外来化学物质3,5-二乙氧羰基-1,4-二氢可力丁在转录水平上诱导产生。另外,诸如烯丙基异丙基乙酰胺和γ-六六六等诱导性化学物质主要在翻译水平起作用。血红素(抑制常数Ki = 5 μM)在翻译水平抑制这种诱导作用。在肝细胞培养中,δ-氨基乙酰丙酸合成酶的半衰期为3小时,信使核糖核酸的半衰期约为5小时。