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Abstract: Micro-contact imprinting methodology was used to prepare the molecule recognition film for denatured creatine kinase-MM (CK-MM), which was denatured by sodium dodecyl sulfate. Interpretation of thermo-calorimetry measurements suggested the use of poly(ethylene glycol) 400 dimethacrylate (PEG400DMA) as a crosslinking molecule. The selected functional monomer, methyl methacrylate (MMA), produced the highest imprinting factor from a panel of five candidates. The molecularly imprinted polymers (MIPs) formed with 5% MMA, 95% PEG400DMA and denatured CK-MM showed excellent imprint recognition, with the imprinting factor of 8.66. The dissociation constant calculated from Scatchard plot was 3.25 x 10-8 M. MIPs had little affinity with non-template proteins, such as native CK-MM, a native and denatured form of human serum albumin (HSA) and immunoglobulin G (IgG). The competitive study in a two-protein environment showed that the selectivity of MIP was 96.8% and 98.7% for denatured CK-MM/denatured HSA and denatured CK-MM/denatured IgG, respectively. The results suggested that MIPs prepared in this work recognize not only the protein sequences but also the protein secondary structure
Template and target information: protein, denatured creatine kinase-MM, CK-MM, creatine kinase
Author keywords: molecularly imprinted polymer, Creatine kinase, protein recognition