Streptofactin, a novel biosurfactant with aerial mycelium inducing activity fromStreptomyces tendaeTü 901/8c
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چکیده
منابع مشابه
Isolation, physico-chemical properties and biological activity of pamamycin-607, an aerial mycelium-inducing substance from Streptomyces alboniger.
Pamamycin-607, which showed aerial mycelium-inducing activity, has been isolated from Streptomyces alboniger IFO 12738. At 0.1 microgram/disc it induces aerial mycelia in the aerial mycelium-negative strain of S. alboniger but inhibits growth of the substrate mycelia at 10 micrograms/disc. It also acts as an antibiotic against some fungi and bacteria. When KMnO4 was partitioned with pamamycin-6...
متن کاملRelationship between response to and production of the aerial mycelium-inducing substances pamamycin-607 and A-factor.
Respectively, exogenous pamamycin-607 and A-factor restored or stimulated aerial mycelium formation in 30 (67%) and 6 (13%) of 45 Streptomyces strains, and both restored or stimulated it in 5 strains (11%). Pamamycin-607 production was detected in 3 of those strains that responded to pamamycin-607. These findings indicate that pamamycin-607 acts on the common regulatory system for aerial myceli...
متن کاملA death round affecting a young compartmentalized mycelium precedes aerial mycelium dismantling in confluent surface cultures of Streptomyces antibioticus.
Development-associated cell-death processes were investigated in detail during the growth and differentiation of Streptomyces antibioticus ATCC 11891 on confluent surface cultures, by using fluorescent viability probes, membrane and activity fluorescence indicators, and electron microscopy analysis. A previously unsuspected complexity was revealed, namely the presence of a very young compartmen...
متن کاملCalcium signal modulators inhibit aerial mycelium formation in Streptomyces alboniger.
accelerated aerial mycelium formation in various actinomycete species, including S. alboniger. This induction was completely inhibited by ethylene glycol bis(/?-aminoethylether)-JV,N,N ',N '-tetraacetic acid (EGTA), a Ca2+-specific chelating agent. Ca2+ thus has been shown to play a role in aerial mycelium formation of 21 (58%) out of 36 strains of actinomycetes tested3). Ca2+ is known as a sec...
متن کاملControl by A-factor of a metalloendopeptidase gene involved in aerial mycelium formation in Streptomyces griseus.
In Streptomyces griseus, A-factor (2-isocapryloyl-3R-hydroxymethyl-gamma-butyrolactone) switches on aerial mycelium formation and secondary metabolite biosynthesis. An A-factor-dependent transcriptional activator, AdpA, activates multiple genes required for morphological development and secondary metabolism in a programmed manner. A region upstream of a zinc-containing metalloendopeptidase gene...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1998
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.1998.tb13041.x