F Panara, S Guiderdone, M Pellegrini, C Zuccaccia, S Contenti
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Abstract
The expression of high- and low-molecular weight acid phosphatase (HMr- and LMr-AP) and zinc ion-dependent acid phosphatase (HMr-ZnAP and LMr-ZnAP) was compared in normal human liver and in Hep G2 human hepatocarcinoma cell line extracts. The investigation was carried out using Sephadex G-100 chromatography, molecular weight determination, and analysis of some distinctive biochemical characteristics and immunochemical properties. Normal human liver and Hep G2 cell lines expressed both HMr- and LMr-AP enzymes although in different proportions. HMr-ZnAP was detected only in human liver extract, while LMr-ZnAP was present only in hepatoma cell extract, indicating that they were differentially expressed in normal and transformed human liver cells.
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