BUB3（BUB3 mitotic checkpoint protein），癌症关联基因，基因ID：9184，该基因编码一种参与纺锤体检查点功能的蛋白质。编码蛋白包含四个wd重复结构域，序列与酵母bub3蛋白相似。交替转录剪接变体，编码不同的亚型，已经被描述出来。[由RefSeq提供，2008年7月]This gene encodes a protein involved in spindle checkpoint function. The encoded protein contains four WD repeat domains and has sequence similarity with the yeast BUB3 protein. Alternate transcriptional splice variants， encoding different isoforms， have been characterized. [provided by RefSeq， Jul 2008]。