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Identification and characterisation of a gene encoding aminoacylase activity from Lactococcus lactis MG1363

FEMS Microbiology Letters, ISSN: 0378-1097, Vol: 183, Issue: 1, Page: 177-182
2000
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Article Description

Analysis of the sequence of a randomly cloned chromosomal DNA fragment (3.2 kb) from Lactococcus lactis revealed the presence of part of an open reading frame, designated amd1, which specifies a protein displaying significant similarity to aminoacylases from various bacteria. The presence of an immobilised copy of an IS 982 element immediately upstream of the coding region of amd1 has probably resulted in the displacement of amd1 ’s native promoter. This genetic organisation was shown to be retained in seven other dairy strains, one of which was only slightly different. The amd1 gene was overexpressed in L. lactis NZ9800 under the control of the inducible nisA promoter and the deacetylating capacity of its gene product was measured on a number of substrates.

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