Cited by 729Protein Kinase Regulation and GTPase SignalingProtein Tyrosine PhosphatasesProtein Structure and Dynamics

Activation mechanism of the MAP kinase ERK2 by dual phosphorylation

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Canagarajah, Bertram J., Khokhlatchev, Andrei, Cobb, Melanie H., Goldsmith, Elizabeth J.·1997·Cell

Abstract

The structure of the active form of the MAP kinase ERK2 has been solved, phosphorylated on a threonine and a tyrosine residue within the phosphorylation lip. The lip is refolded, bringing the phosphothreonine and phosphotyrosine into alignment with surface arginine-rich binding sites. Conformational changes occur in the lip and neighboring structures, including the P+1 site, the MAP kinase insertion, the C-terminal extension, and helix C. Domain rotation and remodeling of the proline-directed P+1 specificity pocket account for the activation. The conformation of the P+1 pocket is similar to a second proline-directed kinase, CDK2-CyclinA, thus permitting the origin of this specificity to be defined. Conformational changes outside the lip provide loci at which the state of phosphorylation can be felt by other cellular components.

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  • ERK phospho-Tyr185 binds in a positively charged C-lobe pocket, where it appears to anchor and limit activation-loop flexibility.

    “ERK phospho-Tyr185 binds in a positively charged pocket in the C-lobe, where it appears to act as an anchor to limit flexibility of the A-loop (Canagarajah et al., 1997).”

    From Structural Mechanisms of Allostery and Autoinhibition in JNK Family Kinases (2012) · cites this paper as Canagarajah et al., 1997

  • In active ERK, phospho-Thr183 binds under αC to a highly positively charged pocket in the N-lobe.

    “The phospho-Thr183 of ERK binds under the αC to a highly positively charged pocket in the N-lobe (Figure 4D).”

    From Structural Mechanisms of Allostery and Autoinhibition in JNK Family Kinases (2012) · cites this paper as Canagarajah et al., 1997

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Authors
Canagarajah, B. J., Khokhlatchev, A., Cobb, M. H., & Goldsmith, E. J.
Affiliations
The University of Texas Southwestern Medical Center (US)
Corresponding author
Goldsmith, Elizabeth J.
Venue
Cell
Publisher
Elsevier BV
Published
1997-09
Volume
90
Issue
5
Pages
859-869
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2140490890
Cited by
729
References
75
Citations by year
2026: 15 · 2025: 9 · 2024: 13 · 2023: 16 · 2022: 10 · 2021: 12 · 2020: 19 · 2019: 19 · 2018: 13 · 2017: 18 · 2016: 19 · 2015: 23 · 2014: 23 · 2013: 18 · 2012: 24
FWCI
12.33
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK 46993, R01DK046993)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
Keywords
ERK2, MAPK activation, dual phosphorylation, phosphothreonine, phosphotyrosine, conformational change, domain rotation, kinase specificity, protein structure
MeSH terms
Binding Sites, Crystallography, Enzyme Activation, Molecular Sequence Data, Phosphorylation, Proline, Protein Conformation, Substrate Specificity, Threonine, Tyrosine, Protein Structure, Secondary, Protein Structure, Tertiary, Calcium-Calmodulin-Dependent Protein Kinases, Dimerization, Mitogen-Activated Protein Kinase 1

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