Testis, acid phosphatase

The character of the intracellular distribution of acid phosphatase in the testis appears to differ from that in the kidney or liver, where a major portion of the enzyme is in the lysosomal fraction. Although the finding in the testis may represent a difference in cellular organization, the possibility also exists that the acid phosphatase may be less firmly bound to the lysosomal structure in the testis than in the liver and may be more readily solubilized during the process of homogenization. 

R9. Russo, J., Subcellular distribution of acid phosphatase in the mouse testis. Ada Physiol. Lat. Amer. 20, 78-80 (1970). 

The following three characteristic mammalian liver and kidney enzymes are absent from muscle catalase, xanthine oxidase, and D-amino oxidase. The distribution of many other enzymes in mammals is limited to particular organs. Thus arginase occurs only in the liver, alkaline phosphatase in the intestinal mucosa, acid phosphatase in kidney, spleen, and prostate, 5-nucleotidase in the testis, and a-mannosidase in the epididymis (see Table 4.6). The blood is disproportionately rich in carbonic anhydrase, and the pancreas in ribonuclease. Glutamine synthetase, which condenses... 

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