title: Ribitol and D-arabitol catabolism in Escherichia coli.
abstract: In Escherichia coli C, the catabolism of the pentitols ribitol and D-arabitol proceeds through separate, inducible operons, each consisting of a dehydrogenase and a kinase. The ribitol operon is induced in response to ribulose, and the D-arabitol operon is induced in response to D-arabitol. Each operon is under negative control. The genes of the ribitol and D-arabitol operons are very closely linked and lie in a mirror image arrangement, rtlB-rtlA-rtlC-atlC-atlA-atlB, between metG and his on the E. coli chromosome.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D004926:Escherichia coli / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D005816:Genetic Complementation Test; D008040:Genetic Linkage; D009876:Operon; D010088:Oxidoreductases / Q000378:metabolism; D012255:Ribitol / Q000378:metabolism*; D013402:Sugar Alcohols / Q000378:metabolism*
chemical_list: D013402:Sugar Alcohols; D012255:Ribitol; D010088:Oxidoreductases