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- W2095165797 abstract "This work describes the synthesis and use of the chelator lipid, nitrilotriacetic acid ditetradecylamine (NTA-DTDA). This lipid is readily dispersed in aqueous media, both alone and when mixed with carrier lipids like dimyristoylphosphatidylcholine (DMPC). Fluorescence microscopic examination of membranes deposited from NTA-DTDA-containing liposomes shows that NTA-DTDA mixes uniformly with the carrier lipid, and does not phase separate. NTA-DTDA-membranes deposited onto the sensing surface of IAsys biosensor cuvettes show good stability, permitting use of the biosensor to study protein interactions. Hexahistidine-tagged proteins including recombinant forms of the extracellular regions of murine B7.1 (B7.1-6H) and of the human erythropoietin receptor (EPOR-6H) bind to NTA-DTDA-membranes; the stability of binding is dependent on both protein concentration, and density of NTA-DTDA. Kinetic measurements show that high stability of anchored proteins (t(1/2) approximately 10-20 h, apparent K(d) approximately 1 nM) can be achieved using membranes containing 25 mol% NTA-DTDA, but low levels of bound protein (<200 arc seconds). The system is used to study the interaction of human EPO with the EPOR anchored onto NTA-DTDA-membranes. In addition to the biological applications reported recently, the results show that NTA-DTDA can be a useful reagent in the study of receptor-ligand interactions." @default.
- W2095165797 created "2016-06-24" @default.
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- W2095165797 date "2001-08-01" @default.
- W2095165797 modified "2023-09-27" @default.
- W2095165797 title "Synthesis of the chelator lipid nitrilotriacetic acid ditetradecylamine (NTA-DTDA) and its use with the IAsys biosensor to study receptor–ligand interactions on model membranes" @default.
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- W2095165797 doi "https://doi.org/10.1016/s0005-2736(01)00344-3" @default.
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