metamycin 由白色链霉菌间霉素变种Streptomyces albus var. metamycinus产生的一种抗革兰氏阴性和阳性细菌的抗生素，对结核杆菌和肿瘤细胞也有一定的活性。白色无定形粉末，碱性，旋光度+63°(水)。易溶于水、甲醇，难溶于大多数有机溶剂。小白鼠LD50129mg/kg(静脉注射)，541mg/kg(腹腔注射)，>2500mg/kg(口服)。
斯特朗及其同事最近发现，更多的人清楚认为雷帕霉素靶蛋白通道在各个物种间间重要性。
But the new finding by Strong and his colleagues "more clearly identifies the [target of rapamycin] pathway as important across species."
阻断变株共合成实验结果明确了各阻断变株阻断位点间的关系及上述中间体在安普霉素生物合成中的衍生次序。
Cosynthesis results of blocked mutants elucidated the relationship of the blocked sites of the mutants and the relative position of above compounds in the biosynthetic pathway of apramycin.
赤霉素含量在不育系及保持系间互有增减。
Gibberellin contents varied irregularly among male sterile lines and maintainers.
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