@article{mbs:/content/journal/micro/10.1099/00221287-73-3-455, author = "Ornston, MAY K. and Ornston, L. N.", title = "The Regulation of the β-Ketoadipate Pathway in Pseudomonas acidovorans and Pseudomonas testosteroni", journal= "Microbiology", year = "1972", volume = "73", number = "3", pages = "455-464", doi = "https://doi.org/10.1099/00221287-73-3-455", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-73-3-455", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: Bacteria of the acidovorans Pseudomonas group (Pseudomonas acidovorans and P. testosteroni) utilize β-carboxy-cis, cis-muconate for growth via the β-ketoadipate pathway. Since protocatechuate, the only known metabolic precursor of β-carboxy-cis, cis-muconate, is utilized by these bacteria via another metabolic pathway, it appears that aa-carboxy-cis, cis-muconate can serve as a natural growth substrate. The members of the acidovorans group are freely permeable to β-carboxy-cis, cis-muconate and in this respect they differ from other Pseudomonas species. Unlike other bacteria (Acinetobacter, Alcaligenes, Nocardia and other species of Pseudomonas) the acidovorans group of Pseudomonas do not use protocatechuate or β-ketoadipate as an inducer of β-carboxy-cis, cis-mucortate lactonizing enzyme and y-carboxy muconolactone decarboxylase. In Pseudomonas acidovorans and P. testosteroni the inducer of these enzymes appears to be β-carboxy-cis, cis-muconate (or y-carboxymuconolactone). In P. testosteroni, but not in P. acidovorans, aa-ketoadipate serves as an inducer of muconolactone isomerase. Therefore strains of P. acidovorans and P. testosteroni may be identified by the unique mechanism that they employ to govern synthesis of the enzymes of the β-ketoadipate pathway.", }