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Science 30 August 1996:
Vol. 273. no. 5279, pp. 1239 - 1241
DOI: 10.1126/science.273.5279.1239

Reports

A Protein Farnesyl Transferase Involved in Abscisic Acid Signal Transduction in Arabidopsis

Sean Cutler, * Majid Ghassemian, Dario Bonetta, Sarah Cooney, Peter McCourt dagger

The hormone abscisic acid (ABA) modulates a variety of developmental processes and responses to environmental stress in higher plants. A collection of mutations, designated era, in Arabidopsis thaliana that confer an enhanced response to exogenous ABA includes mutations in the Era1 gene, which encodes the beta  subunit of a protein farnesyl transferase. In yeast and mammalian systems, farnesyl transferases modify several signal transduction proteins for membrane localization. The era1 mutants suggest that a negative regulator of ABA sensitivity must be acted on by a farnesyl transferase to function.

Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Canada, M5S 3B2.
*   Present address: Carnegie Institution of Washington, Department of Plant Biology, 290 Panama Street, Stanford, CA, 94305-4101, USA.

dagger    To whom correspondence should be addressed. E-mail: peterm{at}gpu.utcc.utoronto.ca



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   Abstract »    Full Text »    PDF »
Substrate specificity determinants in the farnesyltransferase beta -subunit.
C. E. Trueblood, V. L. Boyartchuk, and J. Rine (1997)
PNAS 94, 10774-10779
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Cloning of the Arabidopsis WIGGUM gene identifies a role for farnesylation in meristem development.
E. C. Ziegelhoffer, L. J. Medrano, and E. M. Meyerowitz (2000)
PNAS 97, 7633-7638
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Arabidopsis basic leucine zipper transcription factors involved in an abscisic acid-dependent signal transduction pathway under drought and high-salinity conditions.
Y. Uno, T. Furihata, H. Abe, R. Yoshida, K. Shinozaki, and K. Yamaguchi-Shinozaki (2000)
PNAS 97, 11632-11637
   Abstract »    Full Text »    PDF »



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Science. ISSN 0036-8075 (print), 1095-9203 (online)