NDLI: The Vsa Shield of Mycoplasma pulmonis Is Antiphagocytic

Content Provider	PubMed Central
Author	Shaw, Brandon M. Simmons, Warren L. Dybvig, Kevin
Editor	Weiser, J. N.
Copyright Year	2012
Abstract	The infection of mice with Mycoplasma pulmonis is a model for studying chronic mycoplasmal respiratory disease. Many in vivo and in vitro studies have used the organism to gain a better understanding of host-pathogen interactions in chronic respiratory infection. The organism's Vsa proteins contain an extensive tandem repeat region. The length of the tandem repeat unit varies from as few as 11 amino acids to as many as 19. The number of tandem repeats can be as high as 60. The number of repeats varies at a high frequency due to slipped-strand mispairing events that occur during DNA replication. When the number of repeats is high, e.g., 40, the mycoplasma is resistant to lysis by complement but does not form a robust biofilm. When the number of repeats is low, e.g., 5, the mycoplasma is killed by complement when the cells are dispersed but has the capacity to form a biofilm that resists complement. Here, we examine the role of the Vsa proteins in the avoidance of phagocytosis and find that cells producing a protein with many tandem repeats are relatively resistant to killing by macrophages. These results may be pertinent to understanding the functions of similar proteins that have extensive repeat regions in other microbes.
Related Links	http://dx.doi.org/10.1128/iai.06009-11
Ending Page	709
Page Count	6
Starting Page	704
File Format	PDF
ISSN	00199567
e-ISSN	10985522
Journal	Infection and Immunity
Issue Number	2
Volume Number	80
Language	English
Publisher	American Society for Microbiology
Publisher Date	2012-02-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Immunology Microbiology Parasitology Infectious Diseases Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Parasitology Immunology Microbiology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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