Cloning of Phage Resistance Genes from Lactococcus Lactis ssp. cremoris KH
Open Access
- 1 August 1990
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 73 (8) , 2044-2053
- https://doi.org/10.3168/jds.s0022-0302(90)78883-2
Abstract
A 17.5-kb plasmid conferring restriction and modification-type phage resistance in Lactococcus lactis ssp. cremoris KH was transformed into Lactococcus lactis LM0230 and cloned onto an origin of replication-deficient vector directly into L. lactis. Expression of phage resistance was seen in L. lactis but not in E. coli. A restriction map was generated of the cloned plasmid, and the region encoding phage resistance was localized by insertional inactivation and deletion analysis.Keywords
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