Cited by 121Protein Tyrosine PhosphatasesProtein Kinase Regulation and GTPase SignalingRedox biology and oxidative stress

Differential interaction of the tyrosine phosphatases PTP-SL, STEP and HePTP with the mitogen-activated protein kinases ERK1/2 and p38alpha is determined by a kinase specificity sequence and influenced by reducing agents

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MUÑOZ, Juan José, TÁRREGA, Céline, BLANCO-APARICIO, Carmen, PULIDO, Rafael·2003·Biochemical Journal

Abstract

The protein tyrosine phosphatases (PTPs) PTP-SL, STEP and HePTP are mitogen-activated protein kinase (MAPK) substrates and regulators that bind to MAPKs through a kinase-interaction motif (KIM) located in their non-catalytic regulatory domains. We have found that the binding of these PTPs to the MAPKs extracellular-signal-regulated kinase 1 and 2 (ERK1/2), and p38α is differentially determined by the KIM-adjacent C-terminal regions of the PTPs, which have been termed kinase-specificity sequences, and is influenced by reducing agents. Under control conditions, PTP-SL bound preferentially to ERK1/2, whereas STEP and HePTP bound preferentially to p38α. Under reducing conditions, the association of p38α with STEP or HePTP was impaired, whereas the association with PTP-SL was unaffected. On the other hand, the association of ERK1/2 with HePTP was increased under reducing conditions, whereas the association with STEP or PTP-SL was unaffected. In intact cells, PTP-SL and STEP distinctively regulated the kinase activity and the nuclear translocation of ERK1/2 and p38α. Our results suggest that intracellular redox conditions could modulate the activity and subcellular location of ERK1/2 and p38α by controlling their association with their regulatory PTPs.

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  • While the KIM is required for binding, residues outside the KIM contribute to both binding and specificity.

    “While the KIM is required for binding, 38,39 multiple reports have shown that residues outside the KIM contribute to both binding and specificity.40,41”

    From Molecular basis of MAP kinase regulation (2013) · cites this paper as [40]

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Authors
MUÑOZ, J. J., TÁRREGA, C., BLANCO-APARICIO, C., & PULIDO, R.
Affiliations
The Instituto de Investigaciones Citológicas, Amadeo de Saboya, 4, 46010 Valencia, Spain
Venue
Biochemical Journal
Published
2003-05-15
Volume
372
Issue
1
Pages
193-201
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W2038679488
Cited by
121
References
53
Citations by year
2026: 5 · 2024: 6 · 2023: 3 · 2022: 2 · 2021: 6 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 10 · 2016: 7 · 2015: 6 · 2014: 5 · 2013: 8 · 2012: 10
FWCI
1.73
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • European Commission (HPRN-CT-2000-00085)
  • Ministerio de Ciencia y Tecnología
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
protein tyrosine phosphatase, STEP, ERK1/2, p38α, mitogen-activated protein kinase, reducing agents, redox regulation, protein-protein interaction, nuclear translocation
MeSH terms
Animals, Cell Nucleus, Humans, Substrate Specificity, Protein Tyrosine Phosphatases, Reducing Agents, COS Cells, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinases, Protein Transport, p38 Mitogen-Activated Protein Kinases, Mitogen-Activated Protein Kinase 3

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