Cited by 269Protein Tyrosine PhosphatasesProtein Kinase Regulation and GTPase SignalingCytokine Signaling Pathways and Interactions

Site-Specific Incorporation of a Phosphotyrosine Mimetic Reveals a Role for Tyrosine Phosphorylation of SHP-2 in Cell Signaling

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Lu, Wei, Gong, Delquin, Bar-Sagi, Dafna, Cole, Philip A·2001·Molecular Cell

Abstract

The regulation of protein tyrosine phosphatase (PTPase) SHP-2 is proposed to involve tyrosine phosphorylation on two tail tyrosine residues. Using "expressed protein ligation", nonhydrolyzable phosphotyrosine analogs were introduced at known phosphorylation sites in SHP-2. Biochemical analysis suggests that a phosphonate at Tyr542 interacts intramolecularly with the N-terminal SH2 domain to relieve basal inhibition of the PTPase, whereas a phosphonate at Tyr-580 stimulates the PTPase activity by interaction with the C-terminal SH2 domain. Microinjection experiments indicate that a single phosphorylation of Tyr-542 of SHP-2 is sufficient to activate the MAP kinase pathway in living cells. These studies support a novel mechanism explaining how tyrosine phosphorylation of a PTPase is important in signal transduction.

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Crossref · 10.1016/s1097-2765(01)00369-0

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  • The lack of influence of SHP2 on robustness of late IL-6-induced STAT3 activation might be explained by the fact that SHP2 itself is phosphorylated rapidly in response to IL-6, which causes dissociation from gp130.

    “The lack of influence of SHP2 on robustness of late IL-6-induced STAT3 activation (Fig. 4) might be explained by the fact that SHP2 itself is phosphorylated rapidly in response to IL-6 (Fig. 1b) which causes dissociation from gp130 [9–11].”

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Authors
Lu, W., Gong, D., Bar-Sagi, D., & Cole, P. A.
Affiliations
  • State University of New York (US)
  • Johns Hopkins University (US)
Corresponding author
Cole, Philip A
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2001-10
Volume
8
Issue
4
Pages
759-769
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2000348274
Cited by
268
References
57
Citations by year
2026: 7 · 2025: 7 · 2024: 5 · 2023: 8 · 2022: 16 · 2021: 11 · 2020: 13 · 2019: 4 · 2018: 3 · 2017: 11 · 2016: 6 · 2015: 10 · 2014: 8 · 2013: 13 · 2012: 15
FWCI
4.20
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
Burroughs Wellcome Fund
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
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
SHP2, tyrosine phosphorylation, phosphotyrosine mimetics, expressed protein ligation, protein tyrosine phosphatase, SH2 domain, MAPK signaling, signal transduction, phosphonate analogs, enzyme activation
MeSH terms
Amino Acid Sequence, Enzyme Activation, Microinjections, Microscopy, Fluorescence, Molecular Sequence Data, Phosphorylation, Protein Conformation, Proteins, Recombinant Fusion Proteins, Molecular Structure, Signal Transduction, Culture Media, Serum-Free, Protein Tyrosine Phosphatases, Point Mutation, Phosphotyrosine, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Subtilisin, Intracellular Signaling Peptides and Proteins, Adaptor Proteins, Signal Transducing, GRB2 Adaptor Protein, Protein Tyrosine Phosphatase, Non-Receptor Type 6, Protein Tyrosine Phosphatase, Non-Receptor Type 11, SH2 Domain-Containing Protein Tyrosine Phosphatases

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