对精子中能量合成和利用的关健酶—肌酸激酶(CK)的研究表明,与肌肉等收缩性组织相似,精子中的CK 也存在着早期的P-型(脑型)和特异性较高的M-型(肌型)2种异构体,分别简写为CK-BB 和CK-MM。基于在正常的精子形成过程中CK-BB—CK-MM 异构体的转变标志着细胞的成熟和生殖所需蛋白质的合成这个假设,精子的CK-MM 比 Studies on the key enzyme for energy synthesis and utilization in sperm, creatine kinase (CK), show that CK in sperm also has early P-type (brain type) and specificity High M-type (muscle type) 2 isomers, respectively, abbreviated CK-BB and CK-MM. Based on the assumption that the conversion of the CK-BB-CK-MM isomer during normal spermatogenesis marks the maturation of the cell and the synthesis of the protein required for reproduction, the sperm CK-MM ratio