Bio-Protocol (Sep 2021)

U2.3 Precursor Small Nuclear RNA in vitro Processing Assay

  • Chan Lin,
  • Yujie Feng,
  • Xueyan Peng,
  • Jiaming Wu,
  • Weili Wang,
  • Yunfeng Liu

DOI
https://doi.org/10.21769/bioprotoc.4142
Journal volume & issue
Vol. 11, no. 17

Abstract

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Small nuclear RNAs (snRNAs) are vital for eukaryotic cell activities and play important roles in pre-mRNA splicing. The molecular mechanism underlying the transcription of snRNA, regulated via upstream/downstream cis-elements and relevant trans-elements, has been investigated in detail using cell-free extracts. However, the processing of precursor snRNA (pre-snRNA), which is required by 3’ end maturation of pre-snRNA, remains unclear as a proper processing assay is difficult to develop in vitro. Here, we present an in vitro method using synthetic labeled RNA as substrates to study the 3’ cleavage of pre-snRNA.