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. 1988 Oct;32(10):1494-9.
doi: 10.1128/AAC.32.10.1494.

Cloning and expression of methicillin resistance from Staphylococcus epidermidis in Staphylococcus carnosus

W Tesch  1 , A Strässle, B Berger-Bächi, D O'Hara, P Reynolds, F H Kayser
Affiliations

Cloning and expression of methicillin resistance from Staphylococcus epidermidis in Staphylococcus carnosus

W Tesch et al. Antimicrob Agents Chemother. 1988 Oct.

Abstract

A 6.2-kilobase chromosomal DNA fragment from a methicillin-resistant Staphylococcus epidermidis strain was cloned into Staphylococcus carnosus by using staphylococcal plasmid pCA44 as the vector. The recombinant plasmid obtained, pBBB21, conferred methicillin resistance on its host and was responsible for the synthesis of a low-affinity penicillin-binding protein (PBP), PBP 2'. PBP 2' determined by the S. epidermidis DNA and expressed as a membrane-bound PBP in S. carnosus reacted with monoclonal antibodies directed against PBP 2' of Staphylococcus aureus origin, and the cloned S. epidermidis DNA hybridized to the methicillin (mec)-specific DNA from S. aureus. These findings point to a common origin of the methicillin resistance determinant in staphylococci.

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