Cited by 332RNA Research and SplicingRNA and protein synthesis mechanismsRNA regulation and disease

Polypyrimidine-tract-binding protein: a multifunctional RNA-binding protein

Sawicka, Kirsty, Bushell, Martin, Spriggs, Keith A., Willis, Anne E.·2008·Biochemical Society Transactions

Abstract

PTB (polypyrimidine-tract-binding protein) is a ubiquitous RNA-binding protein. It was originally identified as a protein with a role in splicing but it is now known to function in a large number of diverse cellular processes including polyadenylation, mRNA stability and translation initiation. Specificity of PTB function is achieved by a combination of changes in the cellular localization of this protein (its ability to shuttle from the nucleus to the cytoplasm is tightly controlled) and its interaction with additional proteins. These differences in location and trans-acting factor requirements account for the fact that PTB acts both as a suppressor of splicing and an activator of translation. In the latter case, the role of PTB in translation has been studied extensively and it appears that this protein is required for an alternative form of translation initiation that is mediated by a large RNA structural element termed an IRES (internal ribosome entry site) that allows the synthesis of picornaviral proteins and cellular proteins that function to control cell growth and cell death. In the present review, we discuss how PTB regulates these disparate processes.

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Crossref · 10.1042/bst0360641

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Authors
Sawicka, K., Bushell, M., Spriggs, K. A., & Willis, A. E.
Affiliations
University of Nottingham (GB)
Venue
Biochemical Society Transactions
Published
2008-07-22
Volume
36
Issue
4
Pages
641-647
ISSN
  • 0300-5127 (ISSN-L)
  • 1470-8752
OpenAlex
W1995239307
Cited by
332
References
85
Citations by year
2026: 7 · 2025: 13 · 2024: 21 · 2023: 18 · 2022: 29 · 2021: 11 · 2020: 15 · 2019: 20 · 2018: 17 · 2017: 10 · 2016: 14 · 2015: 16 · 2014: 24 · 2013: 19 · 2012: 31
FWCI
1.72
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical Society Transactions (publishedVersion)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council
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 › RNA regulation and disease
Keywords
polypyrimidine tract-binding protein, PTB, RNA-binding proteins, splicing regulation, polyadenylation, mRNA stability, translation initiation, internal ribosome entry site, nucleocytoplasmic shuttling, protein-protein interaction
MeSH terms
Animals, Virus Replication, RNA-Binding Proteins, Alternative Splicing, RNA Stability, RNA Transport, Polypyrimidine Tract-Binding Protein

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