P34H, a member of the short chain dehydrogenase/reductase(SDR) superfamily, is acquired on the acrosomal cap of human spermatozoon during its maturation arising within epididymis.

• P34H是由人附睾上皮细胞分泌并定位于精子顶体的精子膜蛋白,属于短链脱氢酶还原酶(SDR)超家族成员。