Zymogram and Preliminary Characterization of Lactobacillus helveticus Autolysins
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Production and Structural Characterization of Lactobacillus helveticus Derived Biosurfactant
A probiotic strain of lactobacilli was isolated from traditional soft Churpi cheese of Yak milk and found positive for biosurfactant production. Lactobacilli reduced the surface tension of phosphate buffer saline (PBS) from 72.0 to 39.5 mNm(-1) pH 7.2 and its critical micelle concentration (CMC) was found to be 2.5 mg mL(-1). Low cost production of Lactobacilli derived biosurfactant was carried...
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2 Department of Food Science, University of Wisconsi nMad ison, WI 53706, USA A prolinase (pepR) gene was cloned from an industrial Lactobacillus helveticus strain (53/7). Three clones, hybridizing with a gene probe specific for a peptidase shown to have activity against diand tripeptides, were detected from a L. helveticus genomic library constructed in Escherichia coli. None of the three clon...
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An endopeptidase gene (pepE) was isolated from a previously constructed genomic library of Lactobacillus helveticus CNRZ32. The pepE gene consisted of a 1,314-bp open reading frame encoding a putative peptide of 52.1 kDa. Significant identity was found between the deduced amino acid sequence of pepE and the sequences for aminopeptidase C from Lactobacillus delbrueckii subsp. lactis DSM7290, L. ...
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A gene (htrA) coding for a stress-inducible HtrA-like protein from Lactobacillus helveticus CNRZ32 was cloned, sequenced, and characterized. The deduced amino acid sequence of the gene exhibited 30% identity with the HtrA protein from Escherichia coli; the putative catalytic triad and a PDZ domain that characterize the HtrA family of known bacterial serine proteases were also found in the seque...
متن کاملLactobacillus delbrueckii, Lactobacillus helveticus, PCR-DGGE, pyrosequencing
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1995
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.61.9.3391-3399.1995