Expression, purification, and characterization of acylphosphatase muscular isoenzyme as fusion protein with glutathione S-transferase
- PMID: 8746632
- DOI: 10.1006/prep.1995.0011
Expression, purification, and characterization of acylphosphatase muscular isoenzyme as fusion protein with glutathione S-transferase
Abstract
A genetic construct consisting of the synthetic gene coding for human muscle acylphosphatase linked to the gene for glutathione S-transferase has been prepared. This gene was transformed into and expressed by the Escherichia coli strains DB1035 and TB1, respectively. The fusion protein was purified by affinity chromatography and subsequently cleaved to the fully active acylphosphatase, which was further purified by gel filtration chromatography. Such a purification procedure is very rapid and suitable for obtaining considerable amounts of enzyme at a very high yield. The purified human muscle acylphosphatase was fully active and showed structural features, as well as kinetic and stability parameters, identical to those of the native enzyme.
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