Rapid inhibition of processing and assembly of small nuclear ribonucleoproteins after infection with vesicular stomatitis virus.

Published

Journal Article

After infection of baby hamster kidney cells with vesicular stomatitis virus (VSV), processing and assembly of small nuclear ribonucleoproteins (snRNP) were rapidly inhibited. The U1 and U2 snRNAs accumulated as precursor species approximately 3 and 10 nucleotides longer, respectively, than the mature RNAs. Alteration in snRNP assembly was noted because the precursor snRNAs were not associated with the U-series RNA-core protein complex in infected cells. However, antibodies specific for the U2 RNA-binding protein, A', were able to precipitate pre-U2 RNAs from VSV-infected cells. These results indicated that precursors to U2 RNA were bound to A' and remained bound during virus infection. Analysis of the synthesis of proteins normally associated with U1 and U2 RNAs indicated that synthesis was unaffected at times when snRNP assembly with core proteins was blocked by the VSV. These findings suggested that the core proteins associate with one another in the absence of the snRNAs in VSV-infected cells. They further suggest a correlation between the inability of the core complex to bind the U-series snRNPs and the failure to process the 3' ends of U1 and U2 RNAs in VSV-infected cells. These effects of VSV on snRNP assembly may be related to the shutoff of host-cell macromolecular synthesis.

Full Text

Duke Authors

Cited Authors

  • Fresco, LD; Kurilla, MG; Keene, JD

Published Date

  • March 1987

Published In

Volume / Issue

  • 7 / 3

Start / End Page

  • 1148 - 1155

PubMed ID

  • 3031484

Pubmed Central ID

  • 3031484

Electronic International Standard Serial Number (EISSN)

  • 1098-5549

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/mcb.7.3.1148

Language

  • eng