High-level overproduction of Thermus enzymes in Streptomyces lividans.

High-level overproduction of Thermus enzymes in Streptomyces lividans. Research Abstract Details 

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High-level overproduction of Thermus enzymes in Streptomyces lividans. Abstract Text:

Biotechnology needs to explore the capacity of different organisms to overproduce proteins of interest at low cost. In this paper, we show that Streptomyces lividans is a suitable host for the expression of Thermus thermophilus genes and report the overproduction of the corresponding proteins. This capacity was corroborated after cloning the genes corresponding to an alkaline phosphatase (a periplasmic enzyme in T. thermophilus) and that corresponding to a beta-glycosidase (an intracellular enzyme) in Escherichia coli and in S. lividans. Comparison of the production in both hosts revealed that the expression of active protein achieved in S. lividans was much higher than in E. coli, especially in the case of the periplasmic enzyme. In fact, the native signal peptide of the T. thermophilus phosphatase was functional in S. lividans, being processed at the same peptide bond in both organisms, allowing the overproduction and secretion of this protein to the S. lividans culture supernatant. As in E. coli, the thermostability of the expressed proteins allowed a huge purification factor upon thermal denaturation and precipitation of the host proteins. We conclude that S. lividans is a very efficient and industry-friendly host for the expression of thermophilic proteins from Thermus spp.

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High-level overproduction of Thermus enzymes in Streptomyces lividans. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Applied microbiology and biotechnology

VOLUME: 79

Page Numbers: 1001-8

Journal Abbreviation: Appl. Microbiol. Biotechnol.

ISSN: 0175-7598

DAY: 7

MONTH: 05

YEAR: 2008

High-level overproduction of Thermus enzymes in Streptomyces lividans. Information

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LANGUAGE: eng

NlmUniqueID: 8406612

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AFFILIATION: Instituto de Microbiología Bioquímica, Departamento de Microbiología y Genética, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, Edificio Departamental, Campus Miguel de Unamuno, 37007, Salamanca, Spain, mardi@usal.es.

Country: Germany

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MEDLINETA: Appl Microbiol Biotechnol

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