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Journal of Bacteriology, January 2008, p. 457-461, Vol. 190, No. 1
0021-9193/08/$08.00+0     doi:10.1128/JB.01195-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Nisin-Triggered Activity of Lys44, the Secreted Endolysin from Oenococcus oeni Phage fOg44{triangledown}

João Gil Nascimento,1 Maria Carolina Guerreiro-Pereira,1 Sérgio Fernandes Costa,2 Carlos São-José,1 and Mário Almeida Santos1*

Instituto de Ciência Aplicada e Tecnologia da Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal,1 Faculty of Biology, University of Tübingen, Auf der Morgenstelle, 28, 72074 Tübingen, Germany2

Received 26 July 2007/ Accepted 20 October 2007

The intrinsic resistance of Oenococcus oeni cells to the secreted endolysin from oenophage fOg44 (Lys44) was investigated. Experiments with several antimicrobials support the hypothesis that the full activity of Lys44 requires sudden ion-nonspecific dissipation of the proton motive force, an event undertaken by the fOg44 holin in the phage infection context.

* Corresponding author. Mailing address: Departamento de Biologia Vegetal, Faculdade de Ciências de Lisboa, Ed. ICAT, 1749-016 Lisboa, Portugal. Phone: (351)217500000. Fax: (351)217500048. E-mail: mmsantos{at}fc.ul.pt

{triangledown} Published ahead of print on 2 November 2007.

Journal of Bacteriology, January 2008, p. 457-461, Vol. 190, No. 1
0021-9193/08/$08.00+0     doi:10.1128/JB.01195-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



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