Ribitol Catabolic Pathway in Klebsiella aerogenes
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چکیده
منابع مشابه
D-Arabitol catabolic pathway in Klebsiella aerogenes.
Klebsiella aerogenes strain W70 has an inducible pathway for the degradation of d-arabitol which is comparable to the one found in Aerobacter aerogenes strain PRL-R3. The pathway is also similar to the pathway of ribitol catabolism in that it is composed of a pentitol dehydrogenase, d-arabitol dehydrogenase (ADH), and a pentulokinase, d-xylulokinase (DXK). These two enzymes are coordinately con...
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A ribitol dehydrogenase (ribitol-NAD(+) oxidoreductase, EC. 1.1.1.56) having increased specificity and catalytic efficiency toward xylitol was isolated from mutant strains of Klebsiella aerogenes, which were selected for increased growth rate on xylitol over the ribitol dehydrogenase constitutive wild-type organism. 2. The mutant enzyme was purified to homogeneity and its general characteristic...
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The utilization of glycerol as a carbon source for growth by Klebsiella aerogenes, strain 2103, involves separate aerobic (sn-glycerol-3-phosphate or G3P) and anaerobic (dihydroxyacetone or DHA) pathways of catabolism. Enzyme and transport activities of the aerobic pathway are elevated in cells grown under oxygenated conditions on glycerol or G3P. Anaerobic growth on G3P as carbon source requir...
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In the enteric bacteria Escherichia coli and Salmonella enterica, sulfate is reduced to sulfide and assimilated into the amino acid cysteine; in turn, cysteine provides the sulfur atom for other sulfur-bearing molecules in the cell, including methionine. These organisms cannot use methionine as a sole source of sulfur. Here we report that this constraint is not shared by many other enteric bact...
متن کاملTwo roles for the leucine-responsive regulatory protein in expression of the alanine catabolic operon (dadAB) in Klebsiella aerogenes.
The lrp gene, which codes for the leucine-responsive regulatory protein (Lrp), was cloned from Klebsiella aerogenes W70. The DNA sequence was determined, and the clone was used to create a disruption of the lrp gene. The lack of functional Lrp led to an increased expression of the alanine catabolic operon (dad) in the absence of the inducer L-alanine but also to a decreased expression of the op...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1974
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.119.1.162-169.1974