Article
A conditional lethal yeast phosphotransferase (tpt1) mutant accumulates tRNAs with a 2'-phosphate and an undermodified base at the splice junction.
RNA (New York, N.Y.) - 1 Dec 1997
Spinelli S L, Consaul S A, Phizicky E M
Abstract excerpt
tRNA splicing is essential in yeast and humans and presumably all eukaryotes. The first two steps of yeast tRNA splicing, excision of the intron by endonuclease and joining of the exons by tRNA ligase, leave a splice junction bearing a 2'-phosphate. Biochemical analysis suggests that removal of this phosphate in yeast is catalyzed by a highly specific 2'-phosphotransferase that transfers the phosphate to NAD to...
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