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Updated: Feb 3, 2026

Targeted in Situ Mutagenesis of Histone Genes in Budding Yeast
Published on: January 26, 2017
Cdh1 degradation is mediated by APC/C-Cdh1 and SCF-Cdc4 in budding yeast
Masayoshi Nagai1, Atsuko Shibata2, Takashi Ushimaru3
1Department of Biological Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, 422-8529, Japan.
Abstract:
Cdh1, a substrate-recognition subunit of anaphase-promoting complex/cyclosome (APC/C), is a tumor suppressor, and it is downregulated in various tumor cells in humans. APC/C-Cdh1 is activated from late M phase to G1 phase by antagonizing Cdk1-mediated inhibitory phosphorylation. However, how Cdh1 protein levels are properly regulated is ill-defined. Here we show that Cdh1 is degraded via APC/C-Cdh1 and Skp1-Cullin1-F-box (SCF)-Cdc4 in the budding yeast Saccharomyces cerevisiae. Cdh1 degradation was promoted by forced localization of Cdh1 into the nucleus, where APC/C and SCF are present. Cdk1 promoted APC/C-Cdh1-mediated Cdh1 degradation, whereas polo kinase Cdc5 elicited SCF-Cdc4-mediated degradation. Thus, Cdh1 degradation is controlled via multiple pathways.
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