真核DNA复制中复制起点间距的随机模型
Stochastic Models for Replication Origin Spacings in Eukaryotic DNA Replication
AI总结：
本文提出一个简单随机模型解释真核DNA复制起点间距的分布，该模型重现了起点间排斥和大间距稀缺的现象，并与聚合物生长模型建立联系。
摘要：
遗传物质的复制对所有生物体都是一个重要过程。复制起点在染色体上的许多位点启动DNA的复制，而正是这些位点的分布在此处具有相关性，因为它向我们呈现了一个有趣的随机过程。Newman等人观察到，对于多种类型的酵母细胞，复制起点数据中非常小的起点间间距和非常大的起点间间距的数量，均少于若起点为不相关的随机点时所预期的数量。我们提出了一个非常简单的DNA复制随机模型，并确定该概率过程产生的复制起点显示出起点之间的排斥性以及大间距的相对稀缺性。我们详细阐述了该模型与现有高分子或聚合物生长模型之间的一些联系。
英文摘要：
Replication of genetic material is an important process for all living organisms. Origins of replication initiate the copying of DNA at many points on a chromosome, and it is the distribution of these points that is relevant here, as it presents us with an interesting stochastic process. It was observed by Newman et al. that for various types of yeast cells, there were fewer very small inter-origin spacings, and fewer very large inter-origin spacings in the replication origin data than would be expected if the origins were uncorrelated, random points. We propose a very simple stochastic model for DNA replication and determine that this probabilistic process produces replication origins that display repulsion between origins and relative scarcity of large spacings. We detail some connections between this model and existing polynuclear or polymer growth models.
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