نتایج جستجو برای: actinomycete

تعداد نتایج: 1706  

Journal: :Agricultural and biological chemistry 1990
Y Hayakawa M Nakagawa Y Toda H Seto

An actinomycete identified as Streptomyces flavidovirens was found to produce a new cyclic hexadepsipeptide antibiotic, designated citropeptin. Citropeptin showed antitumor activity against P388 murine leukemia.

2009
Russell Impagliazzo

Green and Tao ([GT04]) used the existence of a dense subset indistinguishable from the primes under certain tests from a certain class to prove the existence of arbitrarily long prime arithmetic progressions. Tao and Ziegler ([TZ06]) showed some general conditions under which such a model exists. In [RTTV08], a quantitatively improved characterization was obtained using an argument based on Nis...

Journal: :Journal of clinical microbiology 1988
L L Ebersole J L Paturzo

Rhodococcus equi, an aerobic actinomycete primarily known as a livestock pathogen, was repeatedly isolated from the severely infected right eye of a 9-year-old boy.

2017
Lalita Limaye Rajesh Patil Prafull Ranadive Ganesh Kamath

Actinomycetes are known to produce an extensive range of bioactive compounds as well as variety of enzymes having multiple biotechnological applications. They are an important source of lignocellulose hydrolyzing enzymes and constitute considerable proportion of the soil or aquatic micro-flora responsible for degradation of biomass in natural environment. Presently, most of the commercially exp...

Saline rhizospheric areas are untouched environments for isolating actinomycetes with the potential of valuable salt tolerant enzyme production. In this study, we isolated and evaluated a total number of of 26 actinomycete strains from plant rhizosphere of the periphery of Dasht-e-Kavir desert. Isolated actinomycetes produced different enzymes. Among them 50, 46, 39, 27, 10 and 7 % of the isola...

2016
Flavia Salvaggio James T. Hodgkinson Laura Carro Stephen M. Geddis Warren R. J. D. Galloway Martin Welch David R. Spring

The synthesis of four quinolone natural products from the actinomycete Pseudonocardia sp. is reported. The key step involved a sp2–sp3 Suzuki–Miyaura reaction between a

2015
Kateřina Petříčková Alica Chroňáková Tomáš Zelenka Tomáš Chrudimský Stanislav Pospíšil Miroslav Petříček Václav Krištůfek

A combined approach, comprising PCR screening and genome mining, was used to unravel the diversity and phylogeny of genes encoding 5-aminolevulinic acid synthases (ALASs, hemA gene products) in streptomycetes-related strains. In actinomycetes, these genes were believed to be directly connected with the production of secondary metabolites carrying the C5N unit, 2-amino-3-hydroxycyclopent-2-enone...

2013
Sanaz Goljanian Tabrizi Javad Hamedi Fatemeh Mohammadipanah

BACKGROUND AND OBJECTIVES Annual incidence of infection with S. Typhi is estimated to be about 17 million cases worldwide. A systematic search among actinomycete isolates from soil of Iran aimed at finding active actinomycetes against the causative agent of typhoid fever, Salmonella Typhi was carried out during this study. MATERIALS AND METHODS Our anti-Salmonella screening program resulted i...

Journal: :Indian journal of biochemistry & biophysics 2011
R Balagurunathan M Radhakrishnan R Babu Rajendran D Velmurugan

Biosynthesis of gold nanoparticles by Streptomycetes from Himalayan Mountain was undertaken for the first time. Out of 10 actinomycete strains tested, four strains (D10, HM10, ANS2 and MSU) showed evidence for the intracellular biosynthesis of gold nanoparticles, among which the strain HM10 showed high potency. Presence of spherical and rod shaped gold nanoparticles in mycelium of the strain HM...

2007
Akane Meguro Sachiko Hasegawa Masafumi Shimizu Tomio Nishimura Hitoshi Kunoh

Agrochemicals are invaluable and effective for increasing food production to stave off hunger throughout the world, although they have fallen into disfavor because of associated environmental pollution and detrimental effects in a variety of nontarget organisms1). Because of such disfavor, the use of microbe-based biological control agents has increased in agricultural importance as a replaceme...

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