Reference: Macaisne N, et al. (2011) SHOC1 and PTD form an XPF-ERCC1-like complex that is required for formation of class I crossovers. J Cell Sci 124(Pt 16):2687-91

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Abstract


Two distinct pathways for meiotic crossover formation coexist in most eukaryotes. The Arabidopsis SHOC1 protein is required for class I crossovers and shows sequence similarity with the XPF endonuclease family. Active XPF endonucleases form a heterodimer with ERCC1 proteins. Here, we show that PTD, an ERCC1-like protein, is required for class-I-interfering crossovers along with SHOC1, MSH4, MSH5, MER3 and MLH3. SHOC1 interacts with PTD in a two-hybrid assay, through its XPF-like nuclease-(HhH)(2) domain. We propose that a XPF-ERCC1-like heterodimer, represented by SHOC1 and PTD in Arabidopsis, involving Zip2 in Saccharomyces cerevisiae and C9orf84 in human, is required for formation of class I crossovers.

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Journal Article
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Macaisne N, Vignard J, Mercier R
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