micromer® particles can be offered with the nickel(II)-nitrilotriacetic acid complex (Ni-NTA) for the binding of histidine labeled proteins in the size range of 1 µm to 10 µm. Recombinant proteins containing a 6xhistidine-tag can be purified by Ni-NTA (nickel-nitrilotriacetic acid) chromatography which is based on the interaction between a transition Ni2+ ion immobilized on the particle matrix and the histidine side chains. Following washing of the matrix 6xhistidine-tag fusion proteins can be eluted by adding free imidazole or EDTA or by reducing the pH.

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  • Mejean, C.O., Schaefer, A.W., Millman, E.A., Forscher, P., and Dufresne, E.R., Multiplexed force measurements on live cells with holographic optical tweezers, Opt Express, 2009, 17(8), 6209- 17;