PMID:6327616

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Citation

Lopilato, JE, Garwin, JL, Emr, SD, Silhavy, TJ and Beckwith, JR (1984) D-ribose metabolism in Escherichia coli K-12: genetics, regulation, and transport. J. Bacteriol. 158:665-73

Abstract

We have isolated mutants defective in high-affinity D-ribose transport. The mutations map in rbsT or rbsB , the structural gene for ribose binding protein. rbsT consists of at least one gene coding for a protein required for high-affinity transport. The high-affinity transport-defective mutants were able to utilize D-ribose, indicating that at least a second, low-affinity transport system for D-ribose is present in Escherichia coli K-12. rbsT and rbsB are located at min 84 on the E. coli genetic map and, together with rbsK , the gene coding for ribokinase , constitute an rbs operon. The order of genes is rbsP /O rbsT rbsB rbsK . The rbs operon is subject to negative control by the product of the rbsR gene. rbsR is located distal to the rbs operon and appears to form a separate transcriptional unit.

Links

PubMed PMC215481

Keywords

Bacterial Proteins/genetics; Biological Transport; Carrier Proteins/genetics; Chromosome Mapping; Chromosomes, Bacterial; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins; Genes; Genes, Bacterial; Genes, Regulator; Mutation; Operon; Periplasmic Binding Proteins; Phosphotransferases/genetics; Phosphotransferases (Alcohol Group Acceptor); Ribose/metabolism

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