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Comparison of the cell surface barrier and enzymatic modification system in Brevibacterium flavum and B. lactofermentum


Jang, KH and Britz, ML, Comparison of the cell surface barrier and enzymatic modification system in Brevibacterium flavum and B. lactofermentum, Biotechnology and Bioprocess Engineering , 10, (3) pp. 225-229. ISSN 1226-8372 (2005) [Refereed Article]

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Copyright 2005 KSBB

DOI: doi:10.1007/BF02932017


To investigate impediments to plasmid transformation in Brevibacterium flavum BF4 and S. lactofermentum BL1, cell surface barriers were determined by measuring growth inhibition whilst enzymatic barriers were determined by comparing DNA methylation properties. B. lactofermentum was more sensitive to growth inhibition by glycine than B. flavum. Release of cellular proteins during sonication was more rapid for S. lactofermentum than for B.. flavum. Plasmid DNA (pCSL17) isolated from B. flavum transformed recipient McrBC(+) strains of Escherichia coli with lower efficiency than McrBC(-). McrBC digestion of this DNA confirmed that B. flavum contain methylated cytidines in the target sequence of McrBC sequences but B. lactofermentum contained a different methylation pattern. DNA derived from the B. lactofermentum transformed recipient EcoKR(+) strains of E. coli with lower efficiency than EcoKR(-), indicating the presence of methylated adenosines in the target sequence of EcoK sequences. The present data describe the differences in the physical and enzymatic barriers between two species of corynebacteria and also provide some insight into the successful foreign gene expression in corynebacteria.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Industrial biotechnology
Research Field:Industrial microbiology (incl. biofeedstocks)
Objective Division:Manufacturing
Objective Group:Industrial chemicals and related products
Objective Field:Industrial chemicals and related products not elsewhere classified
UTAS Author:Britz, ML (Professor Margaret Britz)
ID Code:70617
Year Published:2005
Web of Science® Times Cited:1
Deposited By:Research Division
Deposited On:2011-06-29
Last Modified:2012-06-21

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