Cyclin Y is a novel conserved cyclin essential for development in Drosophila.

Genetics
Dongmei Liu, Russell L Finley

Abstract

The Drosophila gene CG14939 encodes a member of a highly conserved family of cyclins, the Y-type cyclins, which have not been functionally characterized in any organism. Here we report the generation and phenotypic characterization of a null mutant of CG14939, which we rename Cyclin Y (CycY). We show that the null mutant, CycY(E8), is homozygous lethal with most mutant animals arresting during pupal development. The mutant exhibits delayed larval growth and major developmental defects during metamorphosis, including impaired gas bubble translocation, head eversion, leg elongation, and adult tissue growth. Heat-shock-induced expression of CycY at different times during development resulted in variable levels of rescue, the timing of which suggests a key function for zygotic CycY during the transition from third instar larvae to prepupae. CycY also plays an essential role during embryogenesis since zygotic null embryos from null mothers fail to hatch into first instar larvae. We provide evidence that the CycY protein (CycY) interacts with Eip63E, a cyclin-dependent kinase (Cdk) for which no cyclin partner had previously been identified. Like CycY, the Eip63E gene has essential functions during embryogenesis, larval development, a...Continue Reading

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Mar 13, 2014·Acta Biochimica Et Biophysica Sinica·Shan LiJiangye Chen
Jan 17, 2016·International Journal of Biological Macromolecules·Weiwei ZhangYan Deng
Dec 25, 2012·Molecular Phylogenetics and Evolution·Zhaowu MaAn-Yuan Guo
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Jul 6, 2021·Frontiers in Cell and Developmental Biology·Xiaoting ZhaoWentao Yue

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