Pif1-family helicases cooperate to suppress widespread replication fork arrest at tRNA genes

Saccharomyces cerevisiae encodes two distinct Pif1-family helicases – Pif1 and Rrm3 – which have been reported to play distinct roles in numerous nuclear processes酿酒酵母（Saccharomyces cerevisiae）编码两种不同的Pif1家族解旋酶——Pif1与Rrm3，已有研究表明二者在诸多细胞核过程中发挥着截然不同的作用。