薬用植物中の金属含有成分(1) : ダツラ葉中の鉄含有成分について

概要

論文の詳細を見る
Iron-containing components in fresh Datura leaves were assayed by a gel chromatography (Sephadex G-75) system with a multi-type ICP to determine the iron and other element concentrations. As a result, a large portion of the iron in the soluble and anionic protein fraction was found to exist as ferredoxin (Fd), an iron-sulfur protein. The quantity of the iron that exists as Fd corresponds to about 10-20% of the amounts of the soluble iron and to about 1 % of the total iron in Datura leaves. The electron absorption and resonance Raman spectra of the Fds isolated from each of the four species of the genus Datura, D. metel (D. alba), D. innoxia, D. stramonium var. stramonium, and D. stramonium var. tatula suggested that the structure of the active center of Datura Fds is virtually the same as that of spinach Fd, namely, 2Fe-2S type. However, the analytical results of the amino acid compositions of the Fds showed considerable differences between Datura Fds and spinach Fd, and a slight difference among different Datura Fds. Therefore, the difference in amino acid composition of Fds from taxonomically closely related plants may be used as a reliable indicator for the identification of such plants.
日本生薬学会の論文
1991-06-20