منابع مشابه
Identification and characterization of the niddamycin polyketide synthase genes from Streptomyces caelestis.
The genes encoding the polyketide synthase (PKS) portion of the niddamycin biosynthetic pathway were isolated from a library of Streptomyces caelestis NRRL-2821 chromosomal DNA. Analysis of 40 kb of DNA revealed the presence of five large open reading frames (ORFs) encoding the seven modular sets of enzymatic activities required for the synthesis of a 16-membered lactone ring. The enzymatic mot...
متن کاملFour New Antibacterial Xanthones from the Marine-Derived Actinomycetes Streptomyces caelestis
Four new polycyclic antibiotics, citreamicin θ A (1), citreamicin θ B (2), citreaglycon A (3), and dehydrocitreaglycon A (4), were isolated from marine-derived Streptomyces caelestis. The structures of these compounds were elucidated by 1D and 2D NMR spectra. All four compounds displayed antibacterial activity against Staphylococcus haemolyticus, Staphylococcus aureus, and Bacillus subtillis. C...
متن کاملStudies on Streptomyces lavendulae.
Since the isolation of streptothricin by Waksman and Woodruff in 1942 from a strain of Streptomyces lavendulae, numerous reports have appeared concerning the ability of different actinomycetes to produce this antibiotic or closely related compounds. In most of the antibiotic screening programs, streptothricin and streptothricinlike substances are among the first to be commonly encountered as pr...
متن کاملStudies on Vitamin B 12 Production with Streptomyces Olivaceus 1
Manual of Recommended Water Sanitation Practice. Public Health Rpts., 58: 69. CALDWELL, E. L., AND PARR, L. W. 1933 Pump infections under normal conditions in controlled experimental fields. J. Am. Water Works Assoc. 25: 1107-1117. CALVERT, C. K. 1937 The streptococci test for pollution of water. J. Am. Water Works Assoc. 29i 683. CLEMESHA, W. W. 1912 The Bacteriology of Surface Waters in the T...
متن کاملStudies on vitamin B12 production with Streptomyces olivaceus.
Manual of Recommended Water Sanitation Practice. Public Health Rpts., 58: 69. CALDWELL, E. L., AND PARR, L. W. 1933 Pump infections under normal conditions in controlled experimental fields. J. Am. Water Works Assoc. 25: 1107-1117. CALVERT, C. K. 1937 The streptococci test for pollution of water. J. Am. Water Works Assoc. 29i 683. CLEMESHA, W. W. 1912 The Bacteriology of Surface Waters in the T...
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ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1974
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.27.642