PMID:827549
| Citation |
Munch-Petersen, A and Mygind, B (1976) Nucleoside transport systems in Escherichia coli K12: specificity and regulation. J. Cell. Physiol. 89:551-9 |
|---|---|
| Abstract |
Two nucleoside transport systems have been verified and separated by mating and recombination experiments. The recipient strain was a mutant which is negative for transport of all nucleosides. The two systems differ in specificity and in regulation. One system transports pyrimidine and adenine nucleosides. It is regulated by the cytR gene. The other system transports all nucleosides and is regulated by the cytR as well as by the deoR genes. Enzyme assays performed on whole cells of strains, able or unable to transport nucleosides, indicate that the nucleoside catabolizing enzymes are located inside the permeability barrier of the cell. |
| Links |
PubMed Online version:10.1002/jcp.1040890410 |
| Keywords |
Biological Transport, Active; Cytidine/metabolism; Cytidine Deaminase/metabolism; Escherichia coli/enzymology; Escherichia coli/metabolism; Genes, Regulator; Guanosine/metabolism; Mutation; Nucleosides/metabolism; Purine-Nucleoside Phosphorylase/metabolism; Recombination, Genetic; Thymidine/metabolism; Thymidine Phosphorylase/metabolism; Uridine Phosphorylase/metabolism |
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