d- undr-Arabinose
نویسندگان
چکیده
منابع مشابه
D-arabinose metabolism in Escherichia coli B: induction and cotransductional mapping of the L-fucose-D-arabinose pathway enzymes.
D-Arabinose is degraded by Escherichia coli B via some of the L-fucose pathway enzymes and a D-ribulokinase which is distinct from the L-fuculokinase of the L-fucose pathway. We found that L-fucose and D-arabinose acted as the apparent inducers of the enzymes needed for their degradation. These enzymes, including D-ribulokinase, appeared to be coordinately regulated, and mutants which constitut...
متن کاملEscherichia coli YrbH is a D-arabinose 5-phosphate isomerase.
A gene encoding for arabinose 5-phosphate isomerase (API), which catalyzes the interconversion of d-ribulose 5-phosphate (Ru5P) and d-arabinose 5-phosphate (A5P), has been identified from the genome of Escherichia coli K-12. API is the first enzyme in the biosynthesis of 3-deoxy-d-manno-octulosonate (KDO), a sugar moiety located in the lipopolysaccharide layer of most Gram-negative bacteria. Th...
متن کاملGrowth of Aerobacter aerogenes on D-arabinose and L-xylose.
Aerobacter aerogenes is noted for its versatility in being capable of growth by utilizing many of the rare and unnatural carbohydrates as substrates. The mechanism of growth on several of these unnatural carbohydrates has been previously reported. A. aerogenes PRL-R3 possesses the ability to synthesize, in response to the common substrate ribitol, a ribitol dehydrogenase which will also catalyz...
متن کاملRegulation of D-arabinose utilization in Escherichia coli K-12.
Studies involving lambda phage transduction of the D-arabinose utilization gene (dar+) in Escherichia coli K-12 indicated the product of this gene to be a transdominant activator. An apparent anomaly regarding this hypothesis exists in that a diploid recessive lysogen (lambda dar-/dar-) can spontaneously become capable of growth on D-arabinose.
متن کاملPentose metabolism in Mycobacterium smegmatis: comparison of L-arabinose isomerases induced by L-arabinose and D-galactose.
D-Galactose, which did not serve as a growth substrate, was found to induce an L-arabinose isomerase of similar properties to the L-arabinose-induced L-arabinose isomerase. In both cases the pH profiles, pH stability, optimum temperature, heat stability, substrate specificity, metal ion requirements, mobility on polyacrylamide gel electrophoresis, and kinetic properties of the induced isomerase...
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ژورنال
عنوان ژورنال: Berichte der deutschen chemischen Gesellschaft
سال: 1899
ISSN: 0365-9496,1099-0682
DOI: 10.1002/cber.18990320186