Intergeneric Transfer of the Pullulanase Gene betweenKlebsiella aerogenesandEscherichia colibyIn VivoGenetic Manipulation
- 1 June 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in Agricultural and Biological Chemistry
- Vol. 48 (6) , 1451-1458
- https://doi.org/10.1080/00021369.1984.10866353
Abstract
The pullulanase gene (pul) of Klebsiella aerogenes was transferred in vivo to Escherichia coli by using RP4:: Mu cts. The pul gene was expressed in E. coli, although the level of pullulanase activity in E. coli was lower than that in K. aerogenes, and the Pul+ transconjugants were relatively unstable in an unselective medium. Production of pullulanase, which is used to make maltose from starch, was induced in E. coli by pullulan, waxy maize amylopectin, soluble starch and maltose. When the transconjugant cells of E. coli were grown with pullulan or maltose, most pullulanase was produced intracellularly, whereas K. aerogenes produced pullulanase extracellularly. Retransfer of the pulk gene from E. coli to K. aerogenes by conjugation resulted in an increase of the production of extracellular pullulanase.This publication has 11 references indexed in Scilit:
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