Mammalian and yeast 14-3-3 isoforms form distinct patterns of dimers in vivo.

Biochemical and biophysical research communications (2003-01-01)
Maliha Chaudhri, Marie Scarabel, Alastair Aitken
RESUMEN

The 14-3-3 protein family associates with many proteins involved in intracellular signalling. In many cases, there is a distinct preference for a particular isoform(s) of 14-3-3. A specific repertoire of 14-3-3 dimer formation may therefore influence which of the interacting proteins could be brought together. We have analysed the pattern of dimer formation for two of the most abundant isoforms of 14-3-3, epsilon ( epsilon ) and gamma (gamma), following their stable expression. This revealed a distinct preference for particular dimer combinations that is largely independent of cellular conditions. gamma 14-3-3 occurred as homodimers and also formed heterodimers, mainly with epsilon 14-3-3 (In PC12 and Cos cells). The epsilon isoform formed heterodimers with 14-3-3 beta, gamma, zeta, and eta, but no homodimers were detected. The two 14-3-3 homologues, BMH1 and BMH2 from Saccharomyces cerevisiae, were mainly heterodimers.

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Sigma-Aldrich
Anti-14-3-3 β Antibody, serum, Chemicon®
Sigma-Aldrich
Anti-14-3-3 η Antibody, serum, Chemicon®
Sigma-Aldrich
Anti-14-3-3 ε Antibody, CT, serum, Chemicon®
Sigma-Aldrich
Anti-14-3-3 γ Antibody, serum, Chemicon®
Sigma-Aldrich
Anti-14-3-3 ζ Antibody, serum, Chemicon®

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