The design of cyclic AMP-recognizing oligopeptides and evaluation of its capability for cyclic AMP recognition using an electrochemical system

Yoshiki Katayama, Yuya Ohuchi, Hideyoshi Higashi, Yoshihisa Kudo, Mizuo Maeda

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A novel 17-mer peptide ligand for cyclic AMP was designed using the amino acid sequences of essential subsites in various cyclic AMP-dependent protein kinase (protein kinase A) families. The Au disk electrode, which was modified with the designed 17-mer oligopeptide, responded to cyclic AMP but virtually did not respond to any other cyclic nucleotides using the ion channel sensor mechanism. On the other hand, a scrambled peptide, which had the same amino acid composition as and had an amino acid sequence different from the 17-mer oligopeptide, did not respond to any nucleotides. This indicates that the designed 17-mer peptide actually acted as a selective ligand for cyclic AMP. This ligand-designing strategy using peptide sequences in target-binding proteins may possibly be extended to the design of peptide ligands for other second messengers.

Original languageEnglish
Pages (from-to)4671-4674
Number of pages4
JournalAnalytical chemistry
Volume72
Issue number19
DOIs
Publication statusPublished - Oct 1 2000

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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