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The Arabidopsis 14-3-3 Multigene Family

Ke Wu, Michael F. Rooney and Robert J. Ferl
Plant Physiology
Vol. 114, No. 4 (Aug., 1997), pp. 1421-1431
Stable URL: http://www.jstor.org/stable/4277842
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Arabidopsis 14-3-3 Multigene Family
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Abstract

The 14-3-3 proteins are ubiquitous eukaryotic proteins and are encoded by a gene family in many species. We examined the 14-3-3 gene family in Arabidopsis thaliana and found that it contains 10 members. Four new cDNAs, GF14ε, GF14κ, GF14μ, and GF14ν, and two new genomic clones of GF14φ and GF14ν were isolated and characterized. Together with the six previously described 14-3-3 isoforms in Arabidopsis, they constitute a complete family of 10 distinct 14-3-3 proteins of 248 to 268 amino acids. Phylogenetic analysis revealed the presence of two ancient, distinct 14-3-3 gene classes in Arabidopsis and other plants. The ε forms diverged early from the other plant isoforms, and plant 14-3-3 genes displayed a different evolutionary course from that of mammals.

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