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« Previous AbstractRole of DNA replication in the repression of silent mating type loci in yeast    Next AbstractTrpc2 »

EMBO J


Title:The yeast MATa1 gene contains two introns
Author(s):Miller AM;
Address:
Journal Title:EMBO J
Year:1984
Volume:3
Issue:5
Page Number:1061 - 1065
DOI: 10.1002/j.1460-2075.1984.tb01927.x
ISSN/ISBN:0261-4189 (Print) 1460-2075 (Electronic) 0261-4189 (Linking)
Abstract:"In the yeast Saccharomyces cerevisiae there are two mating types, a and alpha, which may mate to produce an a/alpha diploid. Mating type is determined by the allele (MATa or MAT alpha) occupying the MAT locus. In a diploid, expression of the MATa1 and MAT alpha 2 genes determines the a/alpha state by regulating the expression of unlinked genes. Previous S1 endonuclease mapping implied that the MATa1 transcript is not processed. We have performed further S1 mapping of this transcript, demonstrating that the MATa1 gene contains two introns, unlike any other characterized nuclear gene in yeast. Both introns contain 5' splice sites and 5'- TACTAACA -3' consensus sequences at the positions predicted by the S1 mapping data. In the splicing-defective rna2 mutant, the mature message disappears rapidly and the precursor RNA accumulates. The RNA processing removes the UGA stop codon which was previously believed to be read-through"
Keywords:"Base Sequence DNA Restriction Enzymes Diploidy *Genes *Genes, Fungal *Genes, Mating Type, Fungal Mating Factor Mutation Peptides/*genetics Saccharomyces cerevisiae/*genetics;"
Notes:"MedlineMiller, A M eng Research Support, Non-U.S. Gov't England 1984/05/01 EMBO J. 1984 May; 3(5):1061-5. doi: 10.1002/j.1460-2075.1984.tb01927.x"

 
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