A strategy for the expression of recombinant proteins traditionally hard to purify.

A strategy for the expression of recombinant proteins traditionally hard to purify.
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DOI:
10.1016/j.ab.2012.07.016
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发表时间:
2012-10-15
影响因子:
2.9
通讯作者:
Woodgate R
Woodgate R
中科院分区:
生物学4区
文献类型:
--
作者:
Frank EG;McDonald JP;Karata K;Huston D;Woodgate R

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We have developed a series of plasmid vectors for the soluble expression and subsequent purification of recombinant proteins that have historically proven to be extremely difficult to purify from Escherichia coli. Instead of dramatically overproducing the target protein, it is expressed at a low basal level that facilitates the correct folding of the recombinant protein and increases its solubility. Highly active recombinant proteins that are traditionally difficult to purify are readily purified using standard affinity tags and conventional chromatography. To demonstrate the utility of these vectors, we have expressed and purified full-length human DNA polymerases η, ι, and ν from E. coli and show that the purified DNA polymerases are catalytically active in vitro.
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