Journal
JOURNAL OF BACTERIOLOGY
Volume 183, Issue 23, Pages 6957-6960Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.183.23.6957-6960.2001
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In Saccharomyces cerevisiae, the rRNA Gm2270 methyltransferase, Pet56p, has an essential role in the maturation of the mitochondrial large ribosomal subunit that is independent of its methyltransferase activity. Here we show that the proposed Escherichia coli ortholog, RlmB (formerly YjfH), indeed is essential for the formation of Gm in position 2251 of 23S rRNA. However, a Delta rlmB mutant did not show any ribosome assembly defects and was not outgrown by a wild-type strain even after 120 cell mass doublings. Thus, RlmB has no important role in ribosome assembly or function in E. coli.
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