Cited by 155RNA Research and SplicingRNA and protein synthesis mechanismsDevelopmental Biology and Gene Regulation

Ribonomic Analysis of Human Pum1 Reveals cis-trans Conservation across Species despite Evolution of Diverse mRNA Target Sets

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Morris, Adam R., Mukherjee, Neelanjan, Keene, Jack D.·2008·Molecular and Cellular Biology

Abstract

PUF family proteins are among the best-characterized regulatory RNA-binding proteins in nonmammalian species, but relatively little is known about mRNA targets or functions of mammalian PUF proteins. In this study, we used ribonomic analysis to identify and analyze mRNAs associated with ribonucleoproteins containing an endogenous human PUF protein, Pum1. Pum1-associated mRNAs were highly enriched for genes encoding proteins that function in transcriptional regulation and cell cycle/proliferation, results consistent with the posttranscriptional RNA regulon model and the proposed ancestral functions of PUF proteins in stem cell biology. Analysis of 3' untranslated region sequences of Pum1-associated mRNAs revealed a core Pum1 consensus sequence, UGUAHAUA. Pum1 knockdown demonstrated that Pum1 enhances decay of associated mRNAs, and relocalization of Pum1 to stress granules suggested that Pum1 functions in repression of translation. This study is the first in vivo genome-wide mRNA target identification of a mammalian PUF protein and provides direct evidence that human PUF proteins regulate stability of associated mRNAs. Comparison of Pum1-associated mRNAs to mRNA targets of PUF proteins from Saccharomyces cerevisiae and Drosophila melanogaster demonstrates how a well-conserved RNA-binding domain and cognate binding sequence have been evolutionarily rewired to regulate the collective expression of different sets of functionally related genes.

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Crossref · 10.1128/mcb.00155-08

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  • RBFOX1, RBFOX2, and RBFOX3 motifs are conserved in introns downstream of alternative exons, whereas PUM1 and PUM2 sites are most highly conserved in 3' UTRs.

    “motifs for the alternative splicing factorsRBFOX1, RBFOX2 and RBFOX3 (ref. 4) are conserved in introns downstream of alternative exons, whereas sites for the stability/translation factors PUM1 and PUM2 are most highly conserved in 3′ UTRs24,25”

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Authors
Morris, A. R., Mukherjee, N., & Keene, J. D.
Affiliations
Duke Medical Center (US)
Corresponding author
Keene, Jack D.
Venue
Molecular and Cellular Biology
Published
2008-06-01
Volume
28
Issue
12
Pages
4093-4103
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2109821031
Cited by
155
References
62
Citations by year
2026: 6 · 2025: 1 · 2024: 4 · 2023: 2 · 2022: 3 · 2021: 5 · 2020: 10 · 2019: 13 · 2018: 11 · 2017: 7 · 2016: 11 · 2015: 5 · 2014: 12 · 2013: 12 · 2012: 9
FWCI
6.04
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
PUM1, PUF proteins, mRNA stability, post-transcriptional regulation, 3' untranslated region, cis-regulatory sequences, stress granules, protein synthesis inhibition, ribonucleoprotein, Saccharomyces cerevisiae, Drosophila melanogaster, transcriptional regulation
MeSH terms
Animals, Drosophila melanogaster, HeLa Cells, Humans, Models, Biological, Ribosomes, RNA, Messenger, Saccharomyces cerevisiae, Species Specificity, Protein Biosynthesis, RNA-Binding Proteins, Conserved Sequence, Oxidative Stress, Evolution, Molecular, Oligonucleotide Array Sequence Analysis

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