Hyperproduction of Poly-β-Hydroxybutyrate during Exponential Growth of Azotobacter vinelandii UWD
نویسندگان
چکیده
منابع مشابه
Control of polyhydroxyalkanoate synthesis in Azotobacter vinelandii strain UWD
Microbiology, University of Alberta, Edmonton, Alberta T6G 2E9, Canada polyhydroxyalkanoate (PHA) in mutant Azotobacter vinelandii UWD, the kinetic properties of 3-ketothiolase, acetoacetyl-CoA reductase, and /3hydroxybutyrate dehydrogenase were examined. The regulatiorn of the condensation of acetyl-CoA mediated by 3-ketothiolase was narmal, in that it was negatively regulated by free CoA, but...
متن کاملCloning of poly (3-Hydroxybutyrate) synthesis genes from Azotobacter vinelandii into Escherichia coli
The Azotobacter vinelandii is an aerobic, nitrogen-fixing bacterium with the ability to accumulate polyesters such as poly (3-hydroxybutyrate), a particular group of the polyhydroxyalkanoates (pha), when will be cultivated on several carbon sources, including sucrose. Although the capacity of Azotobacter strains to accumulate polyesters is well known, and the genes responsible for their synthes...
متن کاملCytochrome and ubiquinone patterns during growth of Azotobacter vinelandii.
After synthesis during the early log phase, the concentrations of ubiquinone and cytochromes did not vary during the growth cycle of Azotobacter vinelandii, when grown with either high or low aeration on nitrogen-free or urea-containing media. The level of aeration had no effect on the concentrations of the electron carriers synthesized, but affected the growth rate. On urea-containing medium, ...
متن کاملThe GacS sensor kinase regulates alginate and poly-beta-hydroxybutyrate production in Azotobacter vinelandii.
Azotobacter vinelandii produces two polymers: the extracellular polysaccharide alginate and the intracellular polyester poly-beta-hydroxybutyrate (PHB). A cosmid clone (pSMU588) from an A. vinelandii gene library diminished alginate production by A. vinelandii mucoid strain ATCC 9046. The nucleotide sequence and predicted amino acid sequence of the locus responsible for the mucoidy suppression ...
متن کاملImmunostimulatory and growth-promoting potential of poly-β-hydroxybutyrate in rainbow trout (Oncorhynchus mykiss) fingerlings culture
In the current study, the effect of dietary supplementation of poly-β-hydroxybutyrate (PHB) on growth performance, digestive enzymes activity, body composition, non-specific immune response and diseases resistance of rainbow trout fingerlings were investigated. Five hundred and fifty-two healthy fingerlings (8.2±1.0 g) were randomly distributed in 12 tanks (150 L) at a density of 46 fish/ tank ...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1989
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.55.6.1334-1339.1989