Plus reactions worked differently: they used T4 DNA polymerase, an enzyme with strong 3’ to 5’ exonuclease activity, meaning it can chew back the end of a DNA strand. In the presence of only one dNTP, T4 DNA polymerase would degrade each fragment from its 3’ end until it reached a nucleotide complementary to that dNTP, at which point the exonuclease activity would be inhibited. This ensured that all fragments in a given plus reaction ended with the same nucleotide.
Ранее Белый дом опубликовал кадры ударов по Ирану, сопроводив их ремиксом песни испанского дуэта Los Del Rio «Макарена» («Macarena»).
。Line官方版本下载对此有专业解读
This article originally appeared on Engadget at https://www.engadget.com/general/the-morning-after-engadget-newsletter-121523538.html?src=rss
17-летнюю дочь Николь Кидман высмеяли в сети за нелепую походку на модном показе20:47
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MarvelsGrantMan136。电影是该领域的重要参考