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The t-complex-encoded guanine nucleotide exchange factor Fgd2 reveals that two opposing signaling pathways promote transmission ratio distortion in the mouse.

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons50089

Bauer,  Hermann
Dept. of Developmental Genetics (Head: Bernhard G. Herrmann), Max Planck Institute for Molecular Genetics, Max Planck Society;

Véron,  Nathalie
Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50641

Willert,  Jürgen
Dept. of Developmental Genetics (Head: Bernhard G. Herrmann), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50201

Herrmann,  Bernhard G.
Dept. of Developmental Genetics (Head: Bernhard G. Herrmann), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Citation

Bauer, H., Véron, N., Willert, J., & Herrmann, B. G. (2007). The t-complex-encoded guanine nucleotide exchange factor Fgd2 reveals that two opposing signaling pathways promote transmission ratio distortion in the mouse. Genes & Development: A Journal of Celluar and Molecular Biology, 21(1), 143-147. doi:10.1101/gad.414807.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-8292-2
Abstract
Transmission ratio distortion (TRD), the preferential inheritance of the t haplotype from t/+ males, is caused by the cooperative effect of four t-complex distorters (Tcd1–4) and the single t-complex responder (Tcr) on sperm motility. Here we show that Fgd2, encoding a Rho guanine nucleotide exchange factor, maps to the Tcd2 region. The t allele of Fgd2 is overexpressed in testis compared with wild type. A loss-of-function allele of Fgd2 generated by gene targeting reduces the transmission ratio of the t haplotype th49, directly demonstrating the role of Fgd2 as Distorter. Fgd2 identifies a second Rho G protein signaling pathway promoting TRD.