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- W2000692304 abstract "HIV-1 reverse transcriptase (RT) has been successfully expressed as a biologically active recombinant protein in Escherichia coli and purified to homogeneity. After partial purification, RT was obtained primarily in a heterodimeric form represented by two subunits of 66 and 51 kDa, but the preparation also included several forms distinguishable in size and charge by chromatography on ionic-exchange and gel-filtration columns. We have developed a purification method that yields a single heterodimeric form of RT. Our strategy involves the selection of RT molecules exhibiting uniformity in elution from QAE Sepharose anion-exchange columns and Superose 12 gel-filtration columns. In the former, RT is resolved into multiple peaks on the basis of enzymatic activity, one of which represents highly active and pure p66:p51 heterodimeric RT. This highly active RT fraction, after gel-filtration chromatography, yields a compositionally pure protein product free of observable microheterogeneity by 1D and 2D polyacrylamide gel electrophoresis under a variety of conditions. Furthermore, the RNAse H enzymatic activity associated with HIV-1 RT has been demonstrated to coelute with the purified polymerase activity during gel filtration at a size (120 kDa) consistent with its location on the heterodimeric protein molecule." @default.
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- W2000692304 date "1992-04-01" @default.
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- W2000692304 title "Resolution of microheterogeneity associated with recombinant HIV-1 heterodimeric reverse transcriptase" @default.
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- W2000692304 doi "https://doi.org/10.1016/s1046-5928(05)80099-3" @default.
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