Novel Antibiotics Pyrisulfoxin A and B Produced by Streptomyces californicus.
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چکیده
منابع مشابه
Antibiotics produced by Streptomyces.
Streptomyces is a genus of Gram-positive bacteria that grows in various environments, and its shape resembles filamentous fungi. The morphological differentiation of Streptomyces involves the formation of a layer of hyphae that can differentiate into a chain of spores. The most interesting property of Streptomyces is the ability to produce bioactive secondary metabolites, such as antifungals, a...
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topoisomerases, we have screened cultures of actinomycetes and fungi for their ability to inhibit selectively the growth of bacteriophage TP-68 at the concentration that shows no apparent antibacterial activity against NUB3620. In the course of microbial screening, strain KYI1768 was identified to produce active metabolites. We described here production including fermentation and isolation, and...
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SW-163A and B, novel immunosuppressants, were isolated from the culture broth of Streptomyces sp. SNA15896. The molecular formulas of SW-163A and B were determined as C34H42N2O12 and C33H40N2O12 based on the HRFAB-MS analysis, respectively. Both compounds were elucidated to be a large ring ester structure through spectroscopic analyses including various NMR measurements. SW-163A and B showed im...
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Two new antibiotics have been obtained from culture filtrates of an unidentified species of Streptomyces. These antibiotics are of special interest because of their high potency and their extreme toxicity. Because they are yellow in color and are produced by a Streptomyces, they have been named xanthomycin A and xanthomycin B. The organism, designated Streptomyces 94, is one of a series isolate...
متن کاملKobutimycins A and B, new alkaloid antibiotics produced by a Streptomyces strain.
Newalkaloid antibiotics named kobutimycins A (1) and B (2) (Fig. 1) were isolated from the culture broth of a streptomycete strain No. TA3341, which was isolated from a soil sample collected at Kobutizawa, Yamanashi Prefecture, Japan. The strain has been classified as Streptomyces sp. TA3341. In this communication we wish to report the fermentation, isolation, structural elucidation and biologi...
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ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1999
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.52.505