Nomenclature Abstract for Streptomyces rimosus paromomycinus Coffey et al. 1959 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
George M Garrity
Keyword(s):  
Streptomyces Rimosus

Аминогликозидфосфотрансфераза AphSR2 Streptomyces rimosus ATCC 10970: зависимость устойчивости к антибиотикам от серин-треониновых протеинкиназ PkSR1 и PkSR2

2020 ◽  
Vol 56 (1) ◽  
pp. 119-124
Author(s):  
Н. Н. Рудакова ◽  
М. Г. Алексеева ◽  
Н. В. Захаревич ◽  
Д. А. Мавлетова ◽  
В. Н. Даниленко
Keyword(s):  
Streptomyces Rimosus

Studies of Chromium Removal from Tannery Effluents by Dead Streptomyces Rimosus

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Mohamed Nasser Sahmoune ◽  
Krim Louhab ◽  
Aissa Boukhiar
Keyword(s):  
Fractional Power ◽  
Kinetic Studies ◽  
Second Order ◽  
Order Kinetic ◽  
Streptomyces Rimosus ◽  
Tannery Effluents ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Ph Range

Dead streptomyces rimosus was found to be an effective biosorbent for the removal of chromium from industrial tanning effluents. A sorption level of 65 mg/g was observed at pH 4.8 while the precipitation effect augmented this value at a higher pH range. Chromium desorption increased with decreasing desorption agents pH (including HCl and H2SO4) to a maximum value of 95% at approximately zero pH. The biosorption data of trivalent chromium by streptomyces rimosus has been used for kinetic studies based on fractional power, Elovich, pseudo-first order and pseudo-second order rate expressions. The time-dependent Cr (III) biosorption data were well-described by a pseudo-second-order kinetic model. The intraparticle diffusion is not the rate-limiting step for the whole reaction. It was found that the biosorption equilibrium data fit well with the Langmuir model.

Molecular Genetics of Oxytetracycline Production by Streptomyces rimosus

1991 ◽  
pp. 105-116 ◽  
Author(s):  
Kenneth J. McDowall ◽  
Deirdre Doyle ◽  
Michael J. Butler ◽  
Craig Binnie ◽  
Melvyn Warren ◽  
...  
Keyword(s):  
Molecular Genetics ◽  
Streptomyces Rimosus

scholarly journals Engineered Biosynthesis of a Novel Amidated Polyketide, Using the Malonamyl-Specific Initiation Module from the Oxytetracycline Polyketide Synthase

2006 ◽  
Vol 72 (4) ◽  
pp. 2573-2580 ◽  
Author(s):  
Wenjun Zhang ◽  
Brian D. Ames ◽  
Shiou-Chuan Tsai ◽  
Yi Tang
Keyword(s):  
Polyketide Synthase ◽  
Major Product ◽  
Polyketide Synthases ◽  
Type Ii ◽  
Streptomyces Rimosus ◽  
Aromatic Polyketides ◽  
Starter Unit ◽  
Necessary And Sufficient ◽  
Bacterial Type

ABSTRACT Tetracyclines are aromatic polyketides biosynthesized by bacterial type II polyketide synthases (PKSs). Understanding the biochemistry of tetracycline PKSs is an important step toward the rational and combinatorial manipulation of tetracycline biosynthesis. To this end, we have sequenced the gene cluster of oxytetracycline (oxy and otc genes) PKS genes from Streptomyces rimosus. Sequence analysis revealed a total of 21 genes between the otrA and otrB resistance genes. We hypothesized that an amidotransferase, OxyD, synthesizes the malonamate starter unit that is a universal building block for tetracycline compounds. In vivo reconstitution using strain CH999 revealed that the minimal PKS and OxyD are necessary and sufficient for the biosynthesis of amidated polyketides. A novel alkaloid (WJ35, or compound 2) was synthesized as the major product when the oxy-encoded minimal PKS, the C-9 ketoreductase (OxyJ), and OxyD were coexpressed in CH999. WJ35 is an isoquinolone compound derived from an amidated decaketide backbone and cyclized with novel regioselectivity. The expression of OxyD with a heterologous minimal PKS did not afford similarly amidated polyketides, suggesting that the oxy-encoded minimal PKS possesses novel starter unit specificity.

scholarly journals Biochemical and Genetic Characterization of Streptomyces rimosus Mutants Impaired in Oxytetracycline Biosynthesis

Microbiology ◽  
1981 ◽  
Vol 124 (2) ◽  
pp. 329-338 ◽  
Author(s):  
P. M. RHODES ◽  
N. WINSKILL ◽  
E. J. FRIEND ◽  
M. WARREN
Keyword(s):  
Genetic Characterization ◽  
Streptomyces Rimosus
Sign in / Sign up

Export Citation Format

Share Document