Abstract:
:The alpha-amylase gene (amy) from Streptomyces griseus IMRU 3570 and the beta-galactosidase gene (lac) from S. lividans were subcloned into Brevibacterium lactofermentum or B. lactofermentum/Escherichia coli shuttle vectors. The amy gene was not expressed in B. lactofermentum from its own promoter but was efficiently expressed when the promoter of the kanamycin resistance gene (kan) was inserted upstream of the promoterless amylase gene. The lac gene from S. lividans was subcloned without its native promoter and was expressed when placed downstream of pBL1 promoters P2 or P3. The alpha-amylase was secreted extracellularly by removal of the same 28-amino acid leader peptide as in S. lividans. The amy and lac genes provide useful markers for selection of transformants and will facilitate the study of protein secretion in B. lactofermentum.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Cadenas RF,Gil JA,Martín JFdoi
10.1007/BF00170087subject
Has Abstractpub_date
1992-12-01 00:00:00pages
362-9issue
3eissn
0175-7598issn
1432-0614journal_volume
38pub_type
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