Abstract
Actinobacillus seminis is a Gram-negative bacterium member of the Pasteurellaceae family. Even though it is part of the ovine microbiota it is also the causal agent of genital organs affections, particularly epididymitis and orchitis. Infections caused by this microorganism generate economic losses to the ovine industry due to impaired fertility and sterility in affected animals. Knowledge about virulence factors expressed by A. seminis is scarce. In the present work, we describe the expression of a metalloprotease secreted by A. seminis that can degrade bovine fibrinogen and immunoglobulin G and present homology with a carboxy-terminal protease from A. seminis. This metalloprotease presents an optimal activity at a pH between 6 and 7, is stable up to 60°C, inactive at higher temperatures, and completely inhibited by 30 mM EDTA. The expression of this proteolytic activity is controlled by temperature, calcium, and iron. Proteases degrading extracellular matrix components and molecules involved in the immune response could facilitate and improve host colonization and invasion by A. seminis
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
