Accumulation of mRNA coding for the Ctf13p kinetochore subunit of Saccharomyces cerevisiae depends on the same factors that promote rapid decay of nonsense mRNAs

Jeffrey N. Dahlseid, John Puziss, Renee L. Shirley, Audrey L Atkin, Philip Hieter, Michael R. Culbertson

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The CTF13 gene codes for a subunit of the kinetochore in Saccharomyces cerevisiae. The temperature-sensitive mutation ctf13-30, which confers reduced fidelity of chromosome transmission, is a G → A transition causing an amino acid substitution of Lys for Glu145. Strains carrying one chromosomal copy of ctf13-30 fail to grow at the restrictive temperature, whereas a haploid strain carrying two copies of ctf13-30 can grow. Four genes, UPF1, UPF2, UPF3, and ICK1, were represented among extragenic suppressors of ctf13-30. The UPF-genes encode proteins that promote rapid decay of pre-mRNAs and mRNAs containing a premature stop codon. Suppressor mutations in these genes restore kinetochore function by causing increased accumulation of ctf13-30 mRNA. They also cause increased accumulation of CYH2 pre-mRNA, which is a natural target of UPF-mediated decay. Mutations in ICK1 restore kinetochore function but have no effect on ctf13-30 mRNA or CYH2 pre- mRNA accumulation. Most importantly, loss of UPF1 function causes increased accumulation of wild-type CTF13 mRNA but has no effect on the mRNA half- life. We propose that UPF-mediated decay modulates the mRNA level of one or more factors involved in CTF13 mRNA expression.

Original languageEnglish (US)
Pages (from-to)1019-1035
Number of pages17
JournalGenetics
Volume150
Issue number3
StatePublished - Nov 1 1998

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Kinetochores
RNA Stability
Saccharomyces cerevisiae
Messenger RNA
RNA Precursors
Genetic Suppression
Genes
Mutation
Temperature
Nonsense Codon
Haploidy
Amino Acid Substitution
Half-Life
Chromosomes
Proteins

ASJC Scopus subject areas

  • Genetics

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Accumulation of mRNA coding for the Ctf13p kinetochore subunit of Saccharomyces cerevisiae depends on the same factors that promote rapid decay of nonsense mRNAs. / Dahlseid, Jeffrey N.; Puziss, John; Shirley, Renee L.; Atkin, Audrey L; Hieter, Philip; Culbertson, Michael R.

In: Genetics, Vol. 150, No. 3, 01.11.1998, p. 1019-1035.

Research output: Contribution to journalArticle

Dahlseid, Jeffrey N. ; Puziss, John ; Shirley, Renee L. ; Atkin, Audrey L ; Hieter, Philip ; Culbertson, Michael R. / Accumulation of mRNA coding for the Ctf13p kinetochore subunit of Saccharomyces cerevisiae depends on the same factors that promote rapid decay of nonsense mRNAs. In: Genetics. 1998 ; Vol. 150, No. 3. pp. 1019-1035.
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abstract = "The CTF13 gene codes for a subunit of the kinetochore in Saccharomyces cerevisiae. The temperature-sensitive mutation ctf13-30, which confers reduced fidelity of chromosome transmission, is a G → A transition causing an amino acid substitution of Lys for Glu145. Strains carrying one chromosomal copy of ctf13-30 fail to grow at the restrictive temperature, whereas a haploid strain carrying two copies of ctf13-30 can grow. Four genes, UPF1, UPF2, UPF3, and ICK1, were represented among extragenic suppressors of ctf13-30. The UPF-genes encode proteins that promote rapid decay of pre-mRNAs and mRNAs containing a premature stop codon. Suppressor mutations in these genes restore kinetochore function by causing increased accumulation of ctf13-30 mRNA. They also cause increased accumulation of CYH2 pre-mRNA, which is a natural target of UPF-mediated decay. Mutations in ICK1 restore kinetochore function but have no effect on ctf13-30 mRNA or CYH2 pre- mRNA accumulation. Most importantly, loss of UPF1 function causes increased accumulation of wild-type CTF13 mRNA but has no effect on the mRNA half- life. We propose that UPF-mediated decay modulates the mRNA level of one or more factors involved in CTF13 mRNA expression.",
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