Peptide chips for the quantitative evaluation of protein kinase activity

Benjamin T. Houseman, Joon H. Huh, Stephen J. Kron, Milan Mrksich

Research output: Contribution to journalArticlepeer-review

657 Scopus citations

Abstract

Peptide chips are an emerging technology that could replace many of the bioanalytical methods currently used in drug discovery, diagnostics, and cell biology. Despite the promise of these chips, their development for quantitative assays has been limited by several factors, including a lack of well-defined surface chemistries to immobilize peptides, the heterogeneous presentation of immobilized ligands, and nonspecific adsorption of protein to the substrate. This paper describes a peptide chip that overcomes these limitations, and demonstrates its utility in activity assays of the nonreceptor tyrosine kinase c-Src. The chip was prepared by the Diels-Alder-mediated immobilization of the kinase substrate AcIYGEFKKKC-NH2 on a self-assembled monolayer of alkanethiolates on gold. Phosphorylation of the immobilized peptides was characterized by surface plasmon resonance, fluorescence, and phosphorimaging. Three inhibitors of the enzyme were quantitatively evaluated in an array format on a sinle, homogeneous substrate.

Original languageEnglish (US)
Pages (from-to)270-274
Number of pages5
JournalNature biotechnology
Volume20
Issue number3
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology
  • Molecular Medicine
  • Biomedical Engineering

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