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Title: The Role of Rice HEI10 in the Formation of Meiotic Crossovers .
Author: Wang K Wang M Tang D Shen Y Miao C Hu Q Lu T Cheng Z
Journal: PLoS Genet Citation: V : 8 P : e1002809 Year: 2012 Type: In-Data-Review
Literature: oryza Field: abstract Doc ID: pub22792078 Accession (PMID): 22792078
Abstract: HEI10 was first described in human as a RING domain-containing protein that regulates cell cycle and cell invasion . Mice HEI10 ( mei4 ) mutant displays no obvious defect other than meiotic failure from an absence of chiasmata . In this study , we characterize rice HEI10 by map-based cloning and explore its function during meiotic recombination . In the rice hei10 mutant , chiasma frequency is markedly reduced , and those remaining chiasmata exhibit a random distribution among cells , suggesting possible involvement of HEI10 in the formation of interference-sensitive crossovers ( COs ) . However , mutation of HEI10 does not affect early recombination events and synaptonemal complex ( SC ) formation . HEI10 protein displays a highly dynamic localization on the meiotic chromosomes . It initially appears as distinct foci and co-localizes with MER3 . Thereafter , HEI10 signals elongate along the chromosomes and finally restrict to prominent foci that specially localize to chiasma sites . The linear HEI10 signals always localize on ZEP1 signals , indicating that HEI10 extends along the chromosome in the wake of synapsis . Together our results suggest that HEI10 is the homolog of budding yeast Zip3 and Caenorhabditis elegans ZHP-3 , and may specifically promote class I CO formation through modification of various meiotic components .
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[ Sen. 10, subscore: 1.00 ]: Together our results suggest that HEI10 is the homolog of budding yeast Zip3 and Caenorhabditis elegans ZHP-3 , and may specifically promote class I CO formation through modification of various meiotic components .
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