Abstract
The gene encoding the Pyrococcus furiosus extracellular α-amylase (PFA) was amplified by PCR from P. furiosus genomic DNA and was highly expressed in Escherichia coli BL21-Codon Plus (DE3)-RIL. The recombinant α-amylase was mainly expressed in the form of insoluble inclusion bodies. An improved purification method was established in this paper. The solubilization of the inclusion bodies was achieved by 90°C treatment for 3 min in Britton–Robinson buffer at pH 10.5. The solubilized PFA was then diluted and subsequently purified by Phenyl Sepharose chromatography. The overall yield of the new purification method was about 58,000 U/g wet cells, which is higher than previously reported.
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This work is supported by National Basic Research Program of China (973 Program) No. 2004CB719606.
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Wang, L., Zhou, Q., Chen, H. et al. Efficient solubilization, purification of recombinant extracellular α-amylase from pyrococcus furiosus expressed as inclusion bodies in Escherichia coli . J Ind Microbiol Biotechnol 34, 187–192 (2007). https://doi.org/10.1007/s10295-006-0185-1
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DOI: https://doi.org/10.1007/s10295-006-0185-1