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Inversion, duplication, and changes in gene context are associated with human chromosome 18 evolution.

机译:基因背景的反向,重复和改变与人类18号染色体的进化有关。

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摘要

Human chromosome 18 differs from its homologues in the great apes by a pericentric inversion. We have identified a chimpanzee bacterial artificial chromosome that spans a region where a break is likely to have occurred in a human progenitor and have characterized the corresponding regions in both chimpanzees and humans. Interspecies sequence comparisons indicate that the ancestral break occurred between the genes ROCK1 and USP14. In humans, the inversion places ROCK1 near centromeric heterochromatin and USP14 adjacent to highly repetitive subtelomeric repeats. In addition, we provide evidence for a human segmental duplication that may have provided a mechanism for the inversion.
机译:人类染色体18与大猿猴的同系物不同之处在于周心倒置。我们已经确定了一个黑猩猩细菌人工染色体,该染色体跨越了一个可能在人类祖细胞中发生断裂的区域,并且已经确定了黑猩猩和人类的相应区域的特征。种间序列比较表明祖先断裂发生在基因ROCK1和USP14之间。在人类中,倒置会将ROCK1置于着丝粒异染色质附近,而USP14则与高度重复的亚端粒重复序列相邻。此外,我们提供了人类节段重复的证据,可能为倒转提供了机制。

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