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  • Title: Spatial control of protein binding on lipid bimembrane using photoeliminative linker.
    Author: Nakayama K, Tachikawa T, Majima T.
    Journal: Langmuir; 2008 Jun 01; 24(13):6425-8. PubMed ID: 18507424.
    Abstract:
    Protein adsorption and dissociation on cell membrane surfaces is a topic of important study to reveal biological processes including signal transduction and protein trafficking. We demonstrated here the establishment of a mimic model system for the spatial control of protein adsorption/elimination on a lipid bimembrane using a photochemical technique. The novel photoeliminative linker that we synthesized here consists of three distinct components: a substrate (biotin), a photoeliminative group (4-(4-(1-hydroxyethyl)-2-methoxy-5-nitrophenoxy)butanoic acid), and a lipid bimembrane-adsorbent group (farnesyl). The photoeliminative linker was inserted on the entire surface of the lipid bimembrane and two-dimensionally eliminated by spatial UV irradiation onto the membrane to create a biotin pattern. A target protein, streptavidin was selectively immobilized on the patterned biotin, although it was almost not attached on the nonirradiated region. The streptavidin array was selectively dissociated by UV irradiation onto the entire membrane.
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