Mutational analysis of Schizosaccharomyces pombe U4 snRNA by plasmid exchange

Thomas Dandekar*, David Tollervey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We have developed a system for testing mutations by plasmid exchange in the fission Schizosaccharomyces pombe. This system has been used to test the requirement for different regions of the small nuclear RNA U4 in S. pombe. Surprisingly, five of seven deletion and substitution mutations tested in different regions of U4 prevent the accumulation of the mutant RNA. Substitution of the U4 sequence in stem 1 of the U4/U6 interaction doamain allows accumuation of the mutant U4, but does not supports viability. Two sequences with homology to the Sm binding site are found in the 3′ region of S. pombe U4; substitution of the 3′ sequence of the two does not interfere with accumulation or function of U4, indicating that the 5′ sequence is the functional Sm‐binding site.

Original languageEnglish
Pages (from-to)647-653
Number of pages7
Issue number8
Publication statusPublished - Aug 1992


  • schizosaccharomyces pombe
  • snRNA
  • snRNP
  • U4


Dive into the research topics of 'Mutational analysis of Schizosaccharomyces pombe U4 snRNA by plasmid exchange'. Together they form a unique fingerprint.

Cite this