Schizosaccharomyces pombe rsm1 genetically interacts with spmex67, which is involved in mRNA export.
We have previously isolated three synthetic lethal mutants from Schizosaccharomyces pombe in order to identify mutations in the genes that are functionally linked to spmex67 with respect to mRNA export. A novel rsm1 gene was isolated by complementation of the growth defect in one of the synthetic lethal mutants, SLMexl. The rsm1 gene contains no introns and encodes a 296 amino-acid-long protein with the RING finger domain, a C3HC4 in the N-terminal half. The deltarsm1 null mutant is viable, but it showed a slight poly(A)+ RNA accumulation in the nucleus. Also, the combination of deltarsm1 and deltaspmex67 mutations confers synthetic lethality that is accompanied by the severe poly(A)+ RNA export defect. These results suggest that rsm1 is involved in mRNA export from the nucleus.
Yoon
Jin Ho
JH
Division of Biology, College of Natural Sciences, Kangnung National University, Gangneung 210-702, Korea. jhoyoon@kangnung.ac.kr
D001692:Biological Transport; D002467:Cell Nucleus / Q000378:metabolism; D017353:Gene Deletion; D020043:Genes, Essential; D005800:Genes, Fungal; D005804:Genes, Lethal; D005816:Genetic Complementation Test; D007438:Introns / Q000235:genetics; D009154:Mutation; D029543:Nucleocytoplasmic Transport Proteins / Q000235:genetics* / Q000378:metabolism*; D016366:Open Reading Frames; D017434:Protein Structure, Tertiary; D012331:RNA, Fungal / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism*; D012568:Schizosaccharomyces / Q000235:genetics* / Q000378:metabolism*; D029702:Schizosaccharomyces pombe Proteins / Q000235:genetics / Q000378:metabolism
D029543:Nucleocytoplasmic Transport Proteins; D012331:RNA, Fungal; D012333:RNA, Messenger; D029702:Schizosaccharomyces pombe Proteins