A novel zinc finger protein is associated with U7 snRNP and interacts with the stem-loop binding protein in the histone pre-mRNP to stimulate 3'-end processing

The stem-loop binding protein (SLBP) is the posttranscriptional regulator of histone mRNA in metazoan cells. SLBP binds histone pre-mRNAs and facilitates 3'-end processing by promoting stable association of U7 snRNP with the pre-mRNA. To identify other factors involved in histone pre-mRNA proce...

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Bibliographic Details
Published in:Genes & development 2002-01, Vol.16 (1), p.58-71
Main Authors: Dominski, Zbigniew, Erkmann, Judith A, Yang, Xiaocui, Sànchez, Ricardo, Marzluff, William F
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Animals
Base Sequence
Cloning, Molecular
DNA-Binding Proteins - genetics
DNA-Binding Proteins - metabolism
HeLa Cells
Histones - genetics
Histones - metabolism
Humans
hZFP100 protein
Molecular Sequence Data
mRNA Cleavage and Polyadenylation Factors
Nuclear Proteins - genetics
Nuclear Proteins - metabolism
Peptide Mapping
Research Paper
Ribonucleoprotein, U7 Small Nuclear - metabolism
RNA Precursors - metabolism
RNA Processing, Post-Transcriptional
RNA-Binding Proteins - metabolism
snRNA U7
stem loop-binding protein
Xenopus
Xenopus Proteins
Zinc Fingers
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Summary:The stem-loop binding protein (SLBP) is the posttranscriptional regulator of histone mRNA in metazoan cells. SLBP binds histone pre-mRNAs and facilitates 3'-end processing by promoting stable association of U7 snRNP with the pre-mRNA. To identify other factors involved in histone pre-mRNA processing, we used a modified yeast two-hybrid assay in which SLBP and its RNA target were coexpressed as bait. A novel zinc finger protein, hZFP100, which interacts with the SLBP/RNA complex but not with free SLBP, was cloned. The interaction requires regions of SLBP that are important for histone pre-mRNA processing. Antibodies to hZFP100 precipitate U7 snRNA, and expression of hZFP100 in Xenopus oocytes stimulates processing of histone pre-mRNA, showing that hZFP100 is a component of the processing machinery.
ISSN:0890-9369
1549-5477
DOI:10.1101/gad.932302