Rat sp56l show very high homology to mouse sp56 and guinea-pig sp56 both ofwhich have seven Sushi domains.

• sp56l 编码的蛋白与小鼠sp56 与豚鼠AM67 高度同源,都含有7 个Shshi结构域,而sp56s 编码的蛋白前体则完全缺失了第三个Shshi 结构域。