Please use this identifier to cite or link to this item: https://doi.org/10.1007/s004380050707
Title: The novel function of the Saccharomyces cerevisiae CBP2 gene as a splicing factor essential to excision of the Saccharomyces douglasii LSU intron in vivo
Authors: Tian, G.-L. 
Li, G.-Y.
Slonimski, P.P.
Lazowska, J.
Keywords: CBP2 gene
Mitochondrial intron
Splicing
Yeast
Issue Date: 1998
Citation: Tian, G.-L., Li, G.-Y., Slonimski, P.P., Lazowska, J. (1998). The novel function of the Saccharomyces cerevisiae CBP2 gene as a splicing factor essential to excision of the Saccharomyces douglasii LSU intron in vivo. Molecular and General Genetics 258 (1-2) : 60-67. ScholarBank@NUS Repository. https://doi.org/10.1007/s004380050707
Abstract: In the yeast Saccharomyces cerevisiae, the product of the nuclear gene CBP2 is required exclusively for the splicing of the terminal intron of the mitochon drial cytochrome b gene. The homologous gene from the related yeast, Saccharomyces douglasii, has been shown to be essential for respiratory growth in the presence of a wild-type S. douglasii mitochondrial genome and dispensable in the presence of an intronless mitochondrial genome. The two CBP2 genes are functionally interchangeable although the target intron of the S. cerevisiae CBP2 gene is absent from the S. douglasii mitochondrial genome. To determine the function of the CBP2 gene in S. douglasii mitochondrial pre-RNA processing we have constructed and analyzed interspecific hybrid strains between the nuclear genome of S. cerevisiae carrying an inactive CBP2 gene and S. douglasii mitochondrial genomes with different intron contents. We have demonstrated that inactivation of the S. cerevisiae CBP2 gene affects the maturation of the S. douglasii LSU pre-RNA, leading to a respiratory-deficient phenotype in the hybrid strains. We have shown that the CBP2 gene is essential for excision of the S. douglasii LSU intron in vivo and that the gene is dispensable when this intron is deleted or replaced by the S. cerevisiae LSU intron.
Source Title: Molecular and General Genetics
URI: http://scholarbank.nus.edu.sg/handle/10635/134127
ISSN: 00268925
DOI: 10.1007/s004380050707
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