A high-affinity peptide substrate for G protein-coupled receptor kinase 2 (GRK2)

Daisuke Asai, Masaharu Murata, Riki Toita, Takahito Kawano, Hideki Nakashima, Jeong Hun Kang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We synthesized a previously identified β-tubulin-derived G protein-coupled receptor kinase 2 (GKR2) peptide (GR-11-1; DEMEFTEAESNMN) and its amino-terminal extension (GR-11-1-N; GEGMDEMEFTEAESNMN) and carboxyl-terminal extension (GR-11-1-C; DEMEFTEAESNMNDLVSEYQ) peptides with the aim of finding a high-affinity peptide substrate for GRK2. GR-11-1-C showed high affinity for GRK2, but very low affinity for GKR5. Its specificity and sensitivity for GKR2 were greater than those of GR-11-1 and GR-11-1-N. These findings should be useful in designing tools for probing GKR2-mediated intracellular signaling pathways, as well as GRK2-specific drugs.

Original languageEnglish
JournalAmino Acids
DOIs
Publication statusAccepted/In press - 2019

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Clinical Biochemistry
  • Organic Chemistry

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