Expression of the guanine operon of Escherichia coli as analyzed by bacteriophage lambda-induced mutations
- 1 January 1976
- journal article
- research article
- Published by Springer Nature in Molecular Genetics and Genomics
- Vol. 147 (2), 203-208
- https://doi.org/10.1007/bf00267572
Abstract
Studies were made on two guaninerequiring strains of Escherichia coli isolated independently as a result of insertion of prophage λ into one of the structural genes of the guanine operon. These mutants do not exhibit any detectable guaB function but express the guaA function constitutively at a low level, presumably due to transcription from the pI promoter on the prophage. Various types of plaque-forming gua-transducing phages were generated from these lysogens. The approximate location and the mode of substitution of the gua genes in the phage genome were determined. These results clearly indicate that the gene guaB is located closer to the operatorpromoter region of the gua operon than is guaA, and the gene order is “operator”-guaB-guaA.Keywords
This publication has 14 references indexed in Scilit:
- Cloning bacterial genes with plasmid λdvMolecular Genetics and Genomics, 1976
- In vitro Construction of ColE1 Factor Carrying Genes for Synthesis of Guanine or ThymineProceedings of the Japan Academy, 1975
- Int-Constitutive Mutants of Bacteriophage LambdaProceedings of the National Academy of Sciences, 1974
- Prophage lambda at unusual chromosomal locations: II. Mutations induced by bacteriophage lambda in Escherichia coli K12Journal of Molecular Biology, 1973
- Linkage map of Escherichia coli strain K-12.1972
- Linkage map of Escherichia coli strain K-12Microbiology and Molecular Biology Reviews, 1972
- Prophage lambda at unusual chromosomal locations: I. Location of the secondary attachment sites and the properties of the lysogensJournal of Molecular Biology, 1972
- Regulation of the biosynthesis of guanosine 5′-monophosphate: Evidence for one operonJournal of Molecular Biology, 1968
- Inhibition of Parental and Mutant Xanthosine 5'-Phosphate Aminases by PsicofuranineJournal of Biological Chemistry, 1963
- PROTEIN MEASUREMENT WITH THE FOLIN PHENOL REAGENTJournal of Biological Chemistry, 1951