Capped mRNA degradation intermediates accumulate in the yeast spb8-2 mutant.

Abstract:

:mRNA in the yeast Saccharomyces cerevisiae is primarily degraded through a pathway that is stimulated by removal of the mRNA cap structure. Here we report that a mutation in the SPB8 (YJL124c) gene, initially identified as a suppressor mutation of a poly(A)-binding protein (PAB1) gene deletion, stabilizes the mRNA cap structure. Specifically, we find that the spb8-2 mutation results in the accumulation of capped, poly(A)-deficient mRNAs. The presence of this mutation also allows for the detection of mRNA species trimmed from the 3' end. These data show that this Sm-like protein family member is involved in the process of mRNA decapping, and they provide an example of 3'-5' mRNA degradation intermediates in yeast.

journal_name

Mol Cell Biol

authors

Boeck R,Lapeyre B,Brown CE,Sachs AB

doi

10.1128/mcb.18.9.5062

subject

Has Abstract

pub_date

1998-09-01 00:00:00

pages

5062-72

issue

9

eissn

0270-7306

issn

1098-5549

journal_volume

18

pub_type

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