Carter JG, Orueta Iturbe L, Duprey JHA, Carter IR, Southern CD, Rana M, Whalley CM, Bosworth A, Beggs AD, Hicks MR, Tucker JHR, Dafforn TR.

Proc Natl Acad Sci U S A. 2021 Aug 31;118(35):e2100347118. doi:10.1073/pnas.2100347118

Ultrarapid detection of SARS-CoV-2 RNA using a reverse transcription-free exponential amplification reaction, RTF-EXPAR.

“Binder DNA X anneals to viral RNA; the DNA strand of the DNA:RNA heteroduplex is cut by the restriction endonuclease BstNI, which acts as a nicking enzyme by cutting the DNA strand only; the released DNA strand is Trigger X, which is then amplified by EXPAR.”