A specific 31-nucleotide domain of U1 RNA directly interacts with the 70K small nuclear ribonucleoprotein component.

Journal Article (Journal Article)

We have defined the nucleotide sequence of a protein-binding domain within U1 RNA that specifically recognizes and binds both to a U1 small nuclear ribonucleoprotein component (the 70K protein) and to the previously defined RNA-binding domain of the 70K protein. We have investigated direct interactions between purified U1 RNA and 70K protein by reconstitution in vitro. Thirty-one nucleotides of U1 RNA, corresponding to stem-loop I, were required for this interaction. Nucleotides at the 5' end of U1 RNA that are involved in base pairing with the 5' splice site of pre-mRNA were not required for binding. In contrast to other reports, these findings demonstrate that a specific domain of U1 RNA can bind directly to the 70K protein independently of any other snRNP-associated proteins.

Full Text

Duke Authors

Cited Authors

  • Query, CC; Bentley, RC; Keene, JD

Published Date

  • November 1989

Published In

Volume / Issue

  • 9 / 11

Start / End Page

  • 4872 - 4881

PubMed ID

  • 2532301

Pubmed Central ID

  • PMC363637

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/mcb.9.11.4872-4881.1989


  • eng

Conference Location

  • United States