Synthesis of a C-terminally biotinylated macrocyclic peptide mimetic exhibiting high Grb2 SH2 domain-binding affinity

Zhen Dan Shi, Hongpeng Liu, Manchao Zhang, Karen M. Worthy, Lakshman Bindu, Dajun Yang, Robert J. Fisher, Terrence R. Burke

    Research output: Contribution to journalArticlepeer-review

    13 Scopus citations

    Abstract

    Although considerable effort has been devoted to developing Grb2 SH2 domain-binding antagonists, important questions related to ligand specificity, and identification of intracellular targets remain unanswered. In order to begin addressing these issues, the design, synthesis, and evaluation of a novel biotinylated macrocycle are reported that bears biotin functionality at a C-terminal rather than the traditional N-terminal position. With a Grb2 SH2 domain-binding Keq value of 3.4 nM, the title macrocycle (5) is among the most potent biotinylated SH2 domain-binding ligands yet disclosed. This should be a useful tool for elucidating physiological targets of certain Grb2 SH2 domain-binding antagonists.

    Original languageEnglish (US)
    Pages (from-to)4200-4208
    Number of pages9
    JournalBioorganic and Medicinal Chemistry
    Volume13
    Issue number13
    DOIs
    StatePublished - Jul 1 2005

    Keywords

    • Biotin conjugate
    • Grb2 SH2 Domain
    • Macrocycle

    ASJC Scopus subject areas

    • Biochemistry
    • Molecular Medicine
    • Molecular Biology
    • Pharmaceutical Science
    • Drug Discovery
    • Clinical Biochemistry
    • Organic Chemistry

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