文章基本信息

标题：Intercellular signaling in Stigmatella aurantiaca: Purification and characterization of stigmolone, a myxobacterial pheromone
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作者：Wulf Plaga ; Irmela Stamm ; Hans Ulrich Schairer 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1998
卷号：95
期号：19
页码：11263-11267
DOI：10.1073/pnas.95.19.11263
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The myxobacterium Stigmatella aurantiaca passes through a life cycle that involves formation of a multicellular fruiting body as the most complex stage. An early step in this differentiation process depends on a signal factor secreted by the cells when nutrients become limited. The formation of a fruiting body from a small cell population can be accelerated by addition of this secreted material. The bioactive compound was found to be steam volatile. It was purified to homogeneity by steam distillation followed by reversed-phase and normal-phase HPLC. The pheromone was named stigmolone, in accordance with the structure 2,5,8-trimethyl-8-hydroxy-nonan-4-one, as determined by NMR and mass spectrometry. Stigmolone represents a structurally unique and highly bioactive prokaryotic pheromone that is effective in the bioassay at 1 nM concentration.
关键词：microbial development/differentiation/fruiting bodies