当前位置： SCI文献检索 > APPLIED MICROBIOLOGY AND BIOTECHNOLOGY期刊下所有文献 > Improvement of protein production in lactic acid bacteria using 5'-untranslated leader sequence of slpA from Lactobacillus acidophilus. Improvement in protein production using UTLS.

Improvement of protein production in lactic acid bacteria using 5'-untranslated leader sequence of slpA from Lactobacillus acidophilus. Improvement in protein production using UTLS.

Abstract：

:The 5'-untranslated leader sequence (UTLS) of the slpA gene from Lactobacillus acidophilus contributes to mRNA stabilization by producing a 5' stem and loop structure, and a high-level expression system for the lactic acid bacteria was developed using the UTLS in this study. A plasmid, which expresses alpha-amylase under the control of the ldh promoter, was constructed by integrating the core promoter sequence with the UTLS. The role of the UTLS in increasing the copies of the alpha-amylase mRNA was proved by measuring alpha-amylase activity in the culture supernatant and the relative expression of alpha-amylase mRNA was determined by the quantitative real-time PCR analysis. Moreover, several expression systems were constructed by combining the core promoter sequence with the UTLS or with the partially deleted UTLS and the expression level was evaluated. The use of the UTLS led to the success in improving alpha-amylase expression in the two strains of Lactobacillus casei and Lactococcus lactis. The current study showed that the improvement in protein production using the UTLS could be applied to the expression system in the lactic acid bacteria.

journal_name

Appl Microbiol Biotechnol

journal_title

Applied microbiology and biotechnology

authors

Narita J,Ishida S,Okano K,Kimura S,Fukuda H,Kondo A

doi

10.1007/s00253-006-0477-4

subject

Has Abstract

pub_date

2006-11-01 00:00:00

pages

366-73

issue

2

eissn

0175-7598

issn

1432-0614

journal_volume

73

pub_type

杂志文章

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