Human snRNP polypeptide D1 promotes pre-mRNA splicing in yeast and defines nonessential yeast Smd1p sequences.

TitleHuman snRNP polypeptide D1 promotes pre-mRNA splicing in yeast and defines nonessential yeast Smd1p sequences.
Publication TypeJournal Article
Year of Publication1993
JournalNucleic acids research
Volume21
Issue15
Pagination3501-5
Date Published1993
ISSN0305-1048
Abstract

Parallel investigations of yeast and metazoan pre-mRNA splicing have documented enormous complexity in the nucleic acid and protein components of the cellular splicing apparatus, the spliceosome. The degree to which yeast and metazoan spliceosomal proteins differ in composition and structure is currently unknown. In this report we demonstrate that the human small nuclear ribonucleoprotein (snRNP) polypeptide D1 complements the cell lethality, splicing deficiency, and snRNA instability phenotypes associated with a yeast smd1 null allele. Mutational analysis of yeast SMD1, guided by a comparison of the predicted yeast and human proteins, reveals that a large, nonconserved portion of Smd1p is dispensable for biological activity. These observations firmly establish D1 as an essential component of the cellular splicing apparatus and suggest that yeast and metazoa are remarkably similar in the polypeptides guiding early snRNP assembly.

Short TitleNucleic Acids Res
X
Enter your linkblue username.
Enter your linkblue password.
Secure Login

This login is SSL protected

Loading