Strand displacement synthesis in the central polypurine tract region of HIV-1 promotes DNA to DNA strand transfer recombination.


Two distinct plus strand initiation sites have been identified in human immunodeficiency virus (HIV), the central polypurine tract (cPPT) and the polypurine tract located just upstream of the U3 region (U3-PPT). When synthesis from the U3-PPT reaches the cPPT, the elongating primer causes limited strand displacement of the product created from the cPPT. We… (More)


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