Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/45003
標題: Expression of rumen microbial fibrolytic enzyme genes in Probiotic Lactobacillus reuteri
作者: Liu, J.R.
余 碧
Yu, B.
Liu, F.H.
Cheng, K.J.
Zhao, X.
關鍵字: neocallimastix-patriciarum xylanase
thermocellum endoglucanase gene
beta-glucanase
bacillus-subtilis
escherichia-coli
alpha-amylase
plasmid dna
plantarum
cloning
cellulase
期刊/報告no:: Applied and Environmental Microbiology, Volume 71, Issue 11, Page(s) 6769-6775.
摘要: This study was aimed at evaluating the cloning and expression of three rumen microbial fibrolytic enzyme genes in a strain of Lactobacillus reuteri and investigating the probiotic characteristics of these genetically modified lactobacilli. The Neocallimastix patriciarum xylanase gene xynCDBFV, the Fibrobacter succinogenes P-glucanase (1,3-1,4-beta-D-glucan 4-glucanohydrolase [EC 3.2.1.73]) gene, and the Piromyces rhizinflata cellulase gene eglA were cloned in a strain of L. reuteri isolated from the gastrointestinal tract of broilers. The enzymes were expressed and secreted under the control of the Lactococcus lactis lacA promoter and its secretion signal. The L. reuteri transformed strains not only acquired the capacity to break down soluble carboxymethyl cellulose, P-glucan, or xylan but also showed high adhesion efficiency to mucin and mucus and resistance to bile salt and acid.
URI: http://hdl.handle.net/11455/45003
ISSN: 0099-2240
文章連結: http://dx.doi.org/10.1128/aem.71.11.6769-6775.2005
Appears in Collections:動物科學系

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