Lipase activity from strains of Pasteurella multocida.

Abstract:

:Thirteen clinical isolates of Pasteurella multocida from a variety of different animals and humans were examined for their ability to produce lipase. Lipase substrates used included Tween 20, Tween 40, Tween 80, and Tween 85. Lipase activity was detected in the filtrates of organisms grown to the exponential phase in Roswell Park Memorial Institute-1640 defined media (RPMI-1640), but activity increased in the filtrates when the cultures were allowed to proceed to the stationary phase. All strains examined (except for serotype 2) showed lipase activity against at least one of the Tweens. Tween 40 was the best substrate to demonstrate lipase activity. Pasteurella multocida serotype 8 produced the most active lipase against Tween 40 (3,561.7 units of activity/microgram of protein). This activity continued to increase after P. multocida entered a stationary growth phase. P. multocida lipase activity was optimal at pH 8.0. Lipase activity of P. multocida serotype 8 was eluted from a Sepharose 2B column at several points, indicating that several lipases may be produced in vitro by this organism. These data demonstrate that clinical isolates of P. multocida produce lipase; therefore, this enzyme should be considered a potential virulence factors for this organism.

journal_name

Curr Microbiol

journal_title

Current microbiology

authors

Pratt J,Cooley JD,Purdy CW,Straus DC

doi

10.1007/s002849910061

keywords:

subject

Has Abstract

pub_date

2000-05-01 00:00:00

pages

306-9

issue

5

eissn

0343-8651

issn

1432-0991

pii

10.1007/s002849910061

journal_volume

40

pub_type

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