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J Bacteriol. 1987 April; 169(4): 1571-1578

RRP1, a Saccharomyces cerevisiae gene affecting rRNA processing and production of mature ribosomal subunits.

G R Fabian and A K Hopper

ABSTRACT

The Saccharomyces cerevisiae mutant ts351 had been shown to affect processing of 27S pre-rRNA to mature 25S and 5.8S rRNAs (C. Andrew, A. K. Hopper, and B. D. Hall, Mol. Gen. Genet. 144:29-37, 1976). We showed that this strain contains two mutations leading to temperature-sensitive lethality. The rRNA-processing defect, however, is a result of only one of the two mutations. We designated the lesion responsible for the rRNA-processing defect rrp1 and showed that it is located on the right arm of chromosome IV either allelic to or tightly linked to mak21. This rrp1 lesion also results in hypersensitivity to aminoglycoside antibiotics and a reduced 25S/18S rRNA ratio at semipermissive temperatures. We cloned the RRP1 gene and provide evidence that it encodes a moderately abundant mRNA which is in lower abundance and larger than most mRNAs encoding ribosomal proteins.

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J Bacteriol. 1987 April; 169(4): 1571-1578

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