Gonzalez-Pena V, Natarajan S, Xia Y, Klein D, Carter R, Pang Y, Shaner B, Annu K, Putnam D, Chen W, Connelly J, Pruett-Miller S, Chen X, Easton J, Gawad C.

Proc Natl Acad Sci U S A. 2021 Jun 15;118(24):e2024176118. doi:10.1073/pnas.2024176118

Accurate genomic variant detection in single cells with primary template-directed amplification.

“primary template-directed amplification (PTA) [...] takes advantage of the processivity, strong strand displacement activity, and low error rate of phi29 polymerase [...] exonuclease-resistant terminators are incorporated into the reaction, creating smaller double-stranded amplification products that undergo limited subsequent amplification. This transforms the reaction from exponential into a quasilinear process with more of the amplification occurring from the primary template.”