A New Siderophore Isolated from Streptomyces sp. TM-34 with Potent Inhibitory Activity Against Angiotensin-Converting Enzyme
作者:Shinya Kodani、Mayumi Ohnishi-Kameyama、Mitsuru Yoshida、Kozo Ochi
DOI:10.1002/ejoc.201100189
日期:2011.6
N-hydroxyornithine. Because the structurally related siderophore, desferri-foroximithine, was reported to have potent angiotensin-converting enzyme inhibition activity, the inhibitory activity of desferri-tsukubachelin and desferri-foroximithine were tested for structure–activity comparison. Desferri-tsukubachelin showed 14 times more potent inhibitory activity than desferri-foroximithine. This result indicates
从新分离菌株 Streptomyces sp. 的缺铁培养基中分离出一种名为 tsukubachelin 的新铁载体。TM-34。tsukubachelin 的化学结构是通过 2D NMR 和 TOF-Mass 光谱数据的解释确定的。tsukubachelin 的结构由 6 个氨基酸残基组成,包括 3 个丝氨酸,N-α-甲基-N-δ-羟基-N-δ-甲酰鸟氨酸、N-α-甲基-N-δ-羟基鸟氨酸各一个,以及环状N-羟基鸟氨酸。因为据报道结构相关的铁载体去铁-foroximithine 具有强效的血管紧张素转换酶抑制活性,所以测试了去铁-tsukubachelin 和去铁-foroximithine 的抑制活性以进行结构-活性比较。Desferri-tsukubachelin 显示出比去铁-foroximithine 强 14 倍的抑制活性。