目的分离、克隆人泛素结合酶基因，并初步研究其组织表达谱。
Objective To identify and clone the gene encoding human ubiquitin binding enzyme and study its expression spectrum.
已有的研究表明，水稻基因组数据库中存在48个预测的泛素结合酶基因。
Previous studies showed that there are 48 predicted ubiquitin-conjugating enzyme genes in rice genome.
系统进化树分析表明，48个水稻泛素结合酶基因可分为3个大组，总共7个亚组。
Phylogenetic tree analyses indicate that the 48 rice ubiquitin-conjugating enzyme genes can be divided into 3 groups, 7 sub-groups in total.
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