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Cited by 229

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BRS1, a serine carboxypeptidase, regulates BRI1 signaling in Arabidopsis thaliana

Open access
Li, Jia, Lease, Kevin A., Tax, Frans E., Walker, John C.·2001·Proceedings of the National Academy of Sciences

Abstract

Brassinosteroid-insensitive 1 ( BRI1 ) of Arabidopsis thaliana encodes a cell surface receptor for brassinosteroids. Mutations in BRI1 severely affect plant growth and development. Activation tagging of a weak bri1 allele ( bri1 - 5 ) resulted in the identification of a new locus, brs1 - 1D. BRS1 is predicted to encode a secreted carboxypeptidase. Whereas a brs1 loss-of-function allele has no obvious mutant phenotype, overexpression of BRS1 can suppress bri1 extracellular domain mutants. Genetic analyses showed that brassinosteroids and a functional BRI1 protein kinase domain are required for suppression. In addition, overexpressed BRS1 missense mutants, predicted to abolish BRS1 protease activity, failed to suppress bri1 - 5 . Finally, the effects of BRS1 are selective: overexpression in either wild-type or two other receptor kinase mutants resulted in no phenotypic alterations. These results strongly suggest that BRS1 processes a protein involved in an early event in the BRI1 signaling.

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Metadata

Authors
Li, J., Lease, K. A., Tax, F. E., & Walker, J. C.
Venue
Proceedings of the National Academy of Sciences
Published
2001-04-24
Volume
98
Issue
10
Pages
5916-5921
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2009327814
Cited by
229
References
1
FWCI
27.81
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: BRS1, a serine carboxypeptidase, regulates BRI1 signaling in Arabidopsis thaliana. https://app.cochat.ai/papers/10.1073/pnas.091065998
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Li, J., Lease, K. A., Tax, F. E., & Walker, J. C. (2001). BRS1, a serine carboxypeptidase, regulates BRI1 signaling in Arabidopsis thaliana. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.091065998

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