Garcia-Blanco Mariano A
Department of Molecular Genetics, Duke University Medical Center, Durham, North Carolina 27710, USA.
J Clin Invest. 2003 Aug;112(4):474-80. doi: 10.1172/JCI19462.
In the human genome, the majority of protein-encoding genes are interrupted by introns, which are removed from primary transcripts by a macromolecular enzyme known as the spliceosome. Spliceosomes can constitutively remove all the introns in a primary transcript to yield a fully spliced mRNA or alternatively splice primary transcripts leading to the production of many different mRNAs from one gene. This review examines how spliceosomes can recombine two primary transcripts in trans to reprogram messenger RNAs.
在人类基因组中,大多数蛋白质编码基因被内含子打断,这些内含子通过一种称为剪接体的大分子酶从初级转录本中去除。剪接体可以组成性地去除初级转录本中的所有内含子,以产生完全剪接的mRNA,或者选择性地剪接初级转录本,从而从一个基因产生许多不同的mRNA。这篇综述探讨了剪接体如何在反式中重组两个初级转录本以重新编程信使RNA。