NDLI: A signaling mucin at the head of the Cdc42- and MAPK-dependent filamentous growth pathway in yeast

Content Provider	PubMed Central
Author	Cullen, Paul J. Sabbagh, Walid Graham, Ellie Irick, Molly M. Olden, Erin K. Van Neal, Cassandra Jeffrey, Delrow Bardwell, Lee Sprague, George F.
Copyright Year	2004
Abstract	Signaling molecules such as Cdc42 and mitogen-activated protein kinases (MAPKs) can function in multiple pathways in the same cell. Here, we propose one mechanism by which such factors may be directed to function in a particular pathway such that a specific response is elicited. Using genomic approaches, we identify a new component of the Cdc42- and MAPK-dependent signaling pathway that regulates filamentous growth (FG) in yeast. This factor, called Msb2, is a FG-pathway-specific factor that promotes differential activation of the MAPK for the FG pathway, Kss1. Msb2 is localized to polarized sites on the cell surface and interacts with Cdc42 and with the osmosensor for the high osmolarity glycerol response (HOG) pathway, Sho1. Msb2 is glycosylated and is a member of the mucin family, proteins that in mammalian cells promote disease resistance and contribute to metastasis in cancer cells. Remarkably, loss of the mucin domain of Msb2 causes hyperactivity of the FG pathway, demonstrating an inhibitory role for mucin domains in MAPK pathway activation. Taken together, our data suggest that Msb2 is a signaling mucin that interacts with general components, such as Cdc42 and Sho1, to promote their function in the FG pathway.
Related Links	http://dx.doi.org/10.1101/gad.1178604
Ending Page	1708
Page Count	14
Starting Page	1695
File Format	PDF
ISSN	08909369
Journal	Genes & Development
Issue Number	14
Volume Number	18
Language	English
Publisher	Cold Spring Harbor Laboratory Press
Publisher Date	2004-07-15
Access Restriction	Open
Rights Holder	Cold Spring Harbor Laboratory Press
Subject Keyword	Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics Developmental Biology

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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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A signaling mucin at the head of the Cdc42- and MAPK-dependent filamentous growth pathway in yeast.

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