NDLI: Exopolysaccharide-Independent Social Motility of Myxococcusxanthus

Content Provider	PubMed Central
Author	Hu, Wei Hossain, Muhaiminu Lux, Renate Wang, Jing Yang, Zhe Li, Yuezhong Shi, Wenyuan
Editor	Rutherford, Julian
Abstract	Social motility (S motility), the coordinated movement of large cell groupson agar surfaces, of Myxococcus xanthus requires type IVpili (TFP) and exopolysaccharides (EPS). Previous models proposed that thisbehavior, which only occurred within cell groups, requires cycles of TFP extensionand retraction triggered by the close interaction of TFP with EPS. However,the curious observation that M. xanthus can perform TFP-dependentmotility at a single-cell level when placed onto polystyrene surfaces in ahighly viscous medium containing 1% methylcellulose indicated that “Smotility” is not limited to group movements. In an apparent furtherchallenge of the previous findings for S motility, mutants defective in EPSproduction were found to perform TFP-dependent motility on polystyrene surfacein methylcellulose-containing medium. By exploring the interactions betweenpilin and surface materials, we found that the binding of TFP onto polystyrenesurfaces eliminated the requirement for EPS in EPS- cells and thusenabled TFP-dependent motility on a single cell level. However, the presenceof a general anchoring surface in a viscous environment could not substitutefor the role of cell surface EPS in group movement. Furthermore, EPS was foundto serve as a self-produced anchoring substrate that can be shed onto surfacesto enable cells to conduct TFP-dependent motility regardless of surface properties.These results suggested that in certain environments, such as in methylcellulosesolution, the cells could bypass the need for EPS to anchor their TPF andconduct single-cell S motility to promote exploratory movement of coloniesover new specific surfaces.
Related Links	http://dx.doi.org/10.1371/journal.pone.0016102
Starting Page	16102
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	1
Volume Number	6
Language	English
Publisher	Public Library of Science
Publisher Date	2011-01-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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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
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