Cited by 248Signaling Pathways in DiseaseProtein Structure and DynamicsProtein Kinase Regulation and GTPase Signaling

Critical Role of WW Domain Phosphorylation in Regulating Phosphoserine Binding Activity and Pin1 Function

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Lu, Pei-Jung, Zhou, Xiao Zhen, Liou, Yih-Cherng, Noel, Joseph P., Lu, Kun Ping·2002·Journal of Biological Chemistry

Abstract

Phosphoserine-binding modules help determine the specificity of signal transduction events. One such module, the group IV WW domain, plays an essential role in targeting the phosphorylation-specific prolyl isomerase Pin1 to its substrates. These modules require Ser/Thr phosphorylation of their ligands for binding activity. However, phosphorylation of these modules and its functional significance have not been described, nor is it known whether the function of Pin1 is regulated. Here we show that Pin1 WW domain is phosphorylated on Ser(16) both in vitro and in vivo. Further, this phosphorylation regulates the ability of the WW domain to mediate Pin1 substrate interaction and cellular localization. Moreover, both Pin1 and WW domain mutants refractory to Ser(16) phosphorylation act as dominant-negative mutants to induce mitotic block and apoptosis and increase multinucleated cells with 8 N DNA content. Thus, phosphorylation is a new mechanism critical for regulating WW domain phosphoserine binding activity and Pin1 function.

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Crossref · 10.1074/jbc.c100228200

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  • Phosphorylation of Ser16 of Pin1 impairs the function of Pin1.

    “It has been reported previously that phoshorylation of Ser16 of Pin1 impairs the function of Pin1 [12].”

    From Prolyl Isomerase Pin1 Protects Mice from Endotoxin Shock (2011) · cites this paper as [12]

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Authors
Lu, P.-J., Zhou, X. Z., Liou, Y.-C., Noel, J. P., & Lu, K. P.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Salk Institute for Biological Studies (US)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2002-01
Volume
277
Issue
4
Pages
2381-2384
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1971696898
Cited by
244
References
28
Citations by year
2026: 1 · 2025: 1 · 2024: 15 · 2023: 6 · 2022: 6 · 2021: 2 · 2020: 11 · 2019: 4 · 2018: 7 · 2017: 2 · 2016: 10 · 2015: 17 · 2014: 13 · 2013: 16 · 2012: 21
FWCI
3.71
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (GM 58556, R01GM058556, R01 GM 56230, R01GM056230)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
WW domain, Pin1, peptidyl-prolyl isomerase, Ser16 phosphorylation, substrate recognition, dominant-negative mutant, mitotic arrest, apoptosis, multinucleated cells, DNA ploidy, protein phosphorylation regulation
MeSH terms
NIMA-Interacting Peptidylprolyl Isomerase, Cell Cycle, DNA, Electrophoresis, Polyacrylamide Gel, Glutathione Transferase, HeLa Cells, Humans, Luminescent Proteins, Microscopy, Fluorescence, Mitosis, Mutation, Phosphorylation, Phosphoserine, Protein Binding, Recombinant Fusion Proteins, Serine, Threonine, Time Factors, Signal Transduction, Protein Structure, Tertiary, Peptidylprolyl Isomerase, Green Fluorescent Proteins

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