Abstract
In this research, acid phosphatase was purified and characterized from approximately 3000-year-old human bones from archeological excavations. Using anion exchange chromatography, two isoenzymes, TrACP and TsACP, were isolated from the bone. TrACP and TsACP were eluted separately, with a concentration gradient, from a CM-sepharose column. The resulting TrACP was further purified on a cellulose phosphate column. The activity was determined by using pNPP as substrate. Additionally, protein was determined by the Bradford and Coomassie Brilliant Blue method. The optimum pHs of TsACP and TrACP were 6 and 5, respectively. The optimum temperatures were 0 and 10°C, respectively. Molecular weights were measured by gel filtration chromatography. The isoenzyme purity was checked with SDS-PAGE. Finally, the effects of sodium molybdate and tartrate on isoenzyme activity were determined.
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