| Literature DB >> 4942759 |
H G Morse, W K Penberthy, M L Morse.
Abstract
A test procedure based on complementation in mixed extracts is described for the assay of heat-stable protein and enzyme I of the phosphoenolpyruvate-dependent phosphotransferase system. The test was used to assay a collection of pleiotropic carbohydrate mutants of Escherichia coli (ctr mutants) and revertants of these mutants. All mutants were found to lack enzyme I of the phosphoenolpyruvate-dependent transferase system. Revertants of these mutants to complete wild phenotype regained enzyme I-forming ability. Reversion to partial wild type was not accompanied by restoration of enzyme I-forming ability.Entities:
Mesh:
Substances:
Year: 1971 PMID: 4942759 PMCID: PMC247127 DOI: 10.1128/jb.108.2.690-694.1971
Source DB: PubMed Journal: J Bacteriol ISSN: 0021-9193 Impact factor: 3.490