MRS1 cDNA ORF clone, Saccharomyces cerevisiae S288C

The nucleotide sequence of Saccharomyces cerevisiae chromosome IX.
Churcher C, Bowman S, Badcock K, Bankier A, Brown D, Chillingworth T, Connor R, Devlin K, Gentles S, Hamlin N, Harris D, Horsnell T, Hunt S, Jagels K, Jones M, Lye G, Moule S, Odell C, Pearson D, Rajandream M, Rice P, Rowley N, Skelton J, Smith V, Barrell B
Nature387(6632 Suppl)84-7(1997 May)

Life with 6000 genes.
Goffeau A, Barrell BG, Bussey H, Davis RW, Dujon B, Feldmann H, Galibert F, Hoheisel JD, Jacq C, Johnston M, Louis EJ, Mewes HW, Murakami Y, Philippsen P, Tettelin H, Oliver SG
Science (New York, N.Y.)274(5287)546, 563-7(1996 Oct)

defects in Suv3p result in accumulation of stable, excised group I intron ribonucleoproteins, which result in sequestration of Mrs1p, and a concomitant reduction in splicing of aI5beta
Title: Splicing of yeast aI5beta group I intron requires SUV3 to recycle MRS1 via mitochondrial degradosome-promoted decay of excised intron ribonucleoprotein (RNP).

Data show that Mrs1 binds a ubiquitous RNA tertiary structure motif, the GNRA tetraloop-receptor interaction, at two sites in the bI3 RNA.
Title: The Mrs1 splicing factor binds the bI3 group I intron at each of two tetraloop-receptor motifs.

Data suggest that Mrs1p stabilizes RNA structure and promotes the first step in splicing, while Mss116p acts after the first step and, utilizing ATP hydrolysis, specifically enhances the efficiency of exon ligation.
Title: A DExH/D-box protein coordinates the two steps of splicing in a group I intron.