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P-35<br />

Evidence of a Ubiquitin Fusion Degradation 1 gene family in grapevine (Vitis vinifera)<br />

L. Wei*, J. Wu, J. Cheng<br />

Institute of <strong>Horticulture</strong>, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang,<br />

China<br />

*Corresponding author: weilingzhu0409@126.com<br />

The ubiquitin fusion degradation 1 protein (UFD1) is an important ubiquitin recognition<br />

component in the ubiquitin-mediated degradation pathway of animals <strong>and</strong> yeast, but information<br />

about its occurrence <strong>and</strong> role in plants is scarce. Three putative UFD1 genes from grape were<br />

identified in this study. The data were confirmed by searching the publishing database from two<br />

independent grape genome projects <strong>with</strong> the obtained sequences. Three putative UFD1 genes<br />

containing the evolutionarily conserved UFD1 domains at the N-terminus were found on<br />

chromosome 3, chromosome 6 <strong>and</strong> chromosome 12, suggesting the presence of UFD1 genes in<br />

grapevine. These genes were compared <strong>with</strong> those in Arabidopsis, poplar, rice, wheat <strong>and</strong> maize<br />

through genome <strong>and</strong> EST databases mining. Unlike monocot species, having two UFD1 genes,<br />

dicot species have three UFD1 genes. Phylogeneically, the UFD1-like proteins from these six<br />

higher angiosperms fall into two distinct orthologous groups, which each includes a monocot<br />

clade <strong>and</strong> a dicot clade. One of the UFD1 paralogs in grape, Arabidopsis, <strong>and</strong> poplar has been<br />

duplicated through a segmental duplication event.<br />

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