Structural basis of docking interactions between ERK2 and MAP kinase phosphatase 3

Sijiu Liu, Jin Peng Sun, Bo Zhou, Zhong Yin Zhang

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

Mitogen-activated protein (MAP) kinases are central components of signal transduction pathways for cell proliferation, stress responses, and differentiation. Signaling efficiency and specificity are modulated in large part by docking interactions between individual MAP kinase and the kinase interaction motif (KIM), (R/K)2-3-X1-6A- X-ΦB, in its cognate kinases, phosphatases, scaf-folding proteins, and substrates. We have determined the crystal structure of extracellular signal-regulated protein kinase 2 bound to the KIM peptide from MAP kinase phosphatase 3, an extracellular signal-regulated protein kinase 2-specific phosphatase. The structure reveals that the KIM docking site, situated in a noncatalytic region opposite of the kinase catalytic pocket, is comprised of a highly acidic patch and a hydrophobic groove, which engage the basic and ΦA-X-ΦB residues, respectively, in the KIM sequence. The specific docking interactions observed in the structure consolidate all known biochemical data. In addition, structural comparison indicates that the KIM docking site is conserved in all MAP kinases. The results establish a structural model for understanding how MAP kinases interact with their regulators and substrates and provide new insights into how MAP kinase docking specificity can be achieved.

Original languageEnglish (US)
Pages (from-to)5326-5331
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume103
Issue number14
DOIs
StatePublished - Apr 4 2006

Keywords

  • Mitogen-activated protein kinase specificity

ASJC Scopus subject areas

  • Genetics
  • General

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