Selective separation of virus proteins and double-stranded RNAs by SDS-KCl precipitation

Joseph K.K. Li, Todd Johnson, Yi Yuan Yang, Vicki Shore

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


The total viral structural polypeptides and the double-stranded genomic RNAs of bluetongue virus can be selectively separated by a single SDS-KCl precipitation step. This simple, rapid and highly reproducible method enables greater than 95% recovery and purity of both viral proteins and dsRNAs within 30 min. The serotypic identity of the separated dsRNAs can be analyzed by SDS-PAGE electrophorogram immediately. After a single phenol/chloroform extraction, the dsRNA can also be used as hybridization probes, templates for molecular cloning and direct RNA sequencing. The SDS-KCl-precipitated viral proteins could be used readily for peptide mapping and as immunogens. Polyclonal and monoclonal antibodies raised against SDS-KCl-precipitated viral structural polypeptides were useful in Western immunoblots.

Original languageEnglish
Pages (from-to)3-15
Number of pages13
JournalJournal of Virological Methods
Issue number1
Publication statusPublished - Oct 1989
Externally publishedYes


  • Protein isolation
  • SDS-KCl precipitation
  • dsRNA purification

ASJC Scopus subject areas

  • Virology


Dive into the research topics of 'Selective separation of virus proteins and double-stranded RNAs by SDS-KCl precipitation'. Together they form a unique fingerprint.

Cite this