Fluorescently-Labeled Ferrichrome Analogs as Probes for Receptor-Mediated, Microbial Iron Uptake
作者:Haim Weizman、Orly Ardon、Brenda Mester、Jacqueline Libman、Oren Dwir、Yitzhak Hadar、Yona Chen、Abraham Shanzer
DOI:10.1021/ja9610646
日期:1996.1.1
Biomimetic analogs 1 of the microbial siderophore (iron carrier) ferrichrome were labeled with a fluorescent marker at a site which does not interfere with iron binding or receptor recognition to provide iron(III) carriers 5 and 10 (Figure 1). These carriers were built from a tetrahedral carbon as an anchor which was symmetrically extended by three converging iron-binding chains and a single, exogenous
微生物铁载体(铁载体)铁色素的仿生类似物 1 在不干扰铁结合或受体识别的位点用荧光标记物标记,以提供铁 (III) 载体 5 和 10(图 1)。这些载体由作为锚的四面体碳构建而成,该锚由三个会聚的铁结合链和一个单一的外源性蒽基残基对称延伸。载体 5 的氨基酸性质不同(G = 甘氨酰,A = 丙氨酰和 L = 亮氨酰)将锚与铁结合异羟肟酸基团连接起来,而丙氨酰衍生物 10A 与 5A 的不同之处在于蒽基标记和锚。通过 1 H NMR 检查这些结合剂证实它们的构象与未标记的母体化合物的构象相似。