Decomposition of poly-beta-hydroxybutyrate by pseudomonads. 1965

F P Delafield, and M Doudoroff, and N J Palleroni, and C J Lusty, and R Contopoulos

Delafield, F. P. (University of California, Berkeley), M. Doudoroff, N. J. Palleroni, C. J. Lusty, and R. Contopoulos. Decomposition of poly-beta-hydroxybutyrate by pseudomonads. J. Bacteriol. 90:1455-1466. 1965.-A number of aerobic pseudomonads capable of using poly-beta-hydroxybutyrate as sole source of carbon have been partially characterized. One was selected for special study and described as a new species, Pseudomonas lemoignei Delafield. This bacterium constitutively produces extracellular digestive enzymes that hydrolyze the polymer to a mixture of d-beta-hydroxybutyrate and the dimeric ester of this acid, as well as an intracellular "dimer hydrolase" which hydrolyzes the dimeric ester. The exoenzymes are excreted during growth, but mainly at its cessation. Metabolism of beta-hydroxybutyrate largely suppresses enzyme excretion and causes a disappearance of excreted enzyme.

UI MeSH Term Description Entries
D011549 Pseudomonas A genus of gram-negative, aerobic, rod-shaped bacteria widely distributed in nature. Some species are pathogenic for humans, animals, and plants. Chryseomonas,Pseudomona,Flavimonas
D006885 Hydroxybutyrates Salts and esters of hydroxybutyric acid. Hydroxybutyric Acid Derivatives,Hydroxybutyric Acids,Acid Derivatives, Hydroxybutyric
D013053 Spectrophotometry The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
D066298 In Vitro Techniques Methods to study reactions or processes taking place in an artificial environment outside the living organism. In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In

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