Regulation of Polo Kinase by Matrimony Is Required for Cohesin Maintenance during Drosophila melanogaster Female Meiosis.

heterozygotes, there is a low level of sister centromere separation, as well as precocious loss of cohesion along the arms of achiasmate chromosomes. However, mtrm-null females are sterile [13], and sister chromatid cohesion is abolished on all chromosomes, leading to a failure to properly congress or orient chromosomes in metaphase I. These data demonstrate a requirement for the inhibition of Polo, perhaps by sequestering Polo to the microtubules during Drosophila melanogaster female meiosis and suggest that catalytically active Polo is a distinct subset of the total Polo population within the oocyte that requires its own regulation.

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