Department of Genome Sciences, University of Washington, Box 355065, Seattle, WA, 98133, USA.
Chromosome Res. 2010 Jan;18(1):19-34. doi: 10.1007/s10577-009-9099-x.
Eukaryotes have long been reported to show temporal programs of replication, different portions of the genome being replicated at different times in S phase, with the added possibility of developmentally regulated changes in this pattern depending on species and cell type. Unicellular model organisms, primarily the budding yeast Saccharomyces cerevisiae, have been central to our current understanding of the mechanisms underlying the regulation of replication origins and the temporal program of replication in particular. But what exactly is a temporal program of replication, and how might it arise? In this article, we explore this question, drawing again on the wealth of experimental information in unicellular model organisms.
真核生物长期以来一直被报道显示出时间复制程序,基因组的不同部分在 S 期的不同时间复制,并且根据物种和细胞类型,这种模式可能会有发育调节的变化。单细胞模式生物,主要是芽殖酵母酿酒酵母,是我们当前理解复制起点调控和复制时间程序的基础。但是,什么是复制的时间程序,它是如何产生的呢?在本文中,我们再次利用单细胞模式生物丰富的实验信息来探讨这个问题。