A mutation in the large subunit ribosomal RNA gene of Tetrahymena confers anisomycin resistance and cold sensitivity
Sweeney, R.; Yao, C.H.; Yao, M.C.
Genetics 127(2): 327-334
1991
ISSN/ISBN: 0016-6731 PMID: 2004706 Document Number: 369839
Anisomycin, an antibiotic that specifically inhibits the peptidyl transfer function of eukaryotic ribosomes, has been used to select resistant mutants in Tetrahymena thermophila. A mutation conferring anisomycin resistance (an-r) has been localized to a 1.2-kb fragment of the large subunit ribosomal RNA (rRNA) gene by transformation via microinjection. A single base pair change was detected within this region. Nine independently isolated an-r mutants had the same base pair change. T. thermophila strains that are homozygous for this mutation are cold sensitive, unable to mate and grossly abnormal in cell morphology.