TY - JOUR A1 - Scheller, Frieder W. A1 - Lettau, Kristian T1 - Biomimetische Rezeptoren und Biochips Y1 - 2003 ER - TY - JOUR A1 - Warsinke, Axel A1 - Lettau, Kristian A1 - Werner, Deljana A1 - Micheel, Burkhard A1 - Kwak, Young-Keun T1 - Biomimetic Binders and Catalysts for Sensorics = Biomimetische Binder und Katalysatoren für die Sensorik N2 - Biosensors which make use of the high specificity of enzymes, antibodies, and nucleic acids have been described for detection of numerous metabolites, hormones, and nucleic acid sequences. In addition to biological components nowadays biomimetic recognition molecules are also used. Especially antibodies, aptamers, and molecular imprints are promising biomimetics. They could broaden the range of detectable analytes and could increase the functional stability of the sensor. In this publication we describe the generation of biomimetic antibodies and biomimetic molecular imprints for binding creatinine and for hydrolyzing phenylcarbamates to be used in electrochemical sensors. Y1 - 2003 UR - http://www.extenza-eps.com/extenza/loadHTML?objectIDValue=21853&type=abstract ER - TY - JOUR A1 - Lettau, Kristian A1 - Gajovic-Eichelmann, N. A1 - Kwak, Young-Keun A1 - Scheller, Frieder W. A1 - Warsinke, Axel T1 - Hydroxylasen und katalytische Polymere für Biochips Y1 - 2004 ER - TY - JOUR A1 - Lettau, Kristian A1 - Warsinke, Axel A1 - Laschewsky, André A1 - Mosbach, K. A1 - Yilmaz, E. A1 - Scheller, Frieder W. T1 - An esterolytic imprinted polymer prepared via a silica-supported transition state analogue N2 - In this work we describe a new preparation method for an esterolytic imprinted polymer with catalytic sites on the surface. A template was prepared by immobilizing a transition state analogue (phosphoramidic acid derivative) of an esterolytic reaction within porous silica particles. Polymerization within the pores was carried out using 4- vinylimidazole as a functional monomer and divinylbenzene as a cross-linker. The polymer was released by dissolution of the silica support with hydrofluoric acid and catalytic properties were studied by incubation with three different 4- nitrophenylesters and spectrophotometric determination of the released 4-nitrophenol. For 4-nitrophenyl acetate an activity of 211 nmol min(-1) mg(-1) and a K-m value of 2.2 mmol L-1 was obtained Y1 - 2004 ER - TY - JOUR A1 - Lettau, Kristian A1 - Warsinke, Axel A1 - Katterle, Martin A1 - Danielsson, Bengt A1 - Scheller, Frieder W. T1 - A bifunctional molecularly imprinted polymer (MIP): analysis of binding and catalysis by a thermistor N2 - Binding or catalysis? Both can be distinguished with a molecularly imprinted polymer (MIP) by the different patterns of heat generation. The catalytically active sites, like in the corresponding enzyme, generate a steady-state temperature increase. Thus, enzyme-like catalysis and antibody-analogue binding are analyzed simultaneously in a bifunctional MIP for the first time (see scheme). Y1 - 2006 UR - http://www3.interscience.wiley.com/cgi-bin/jhome/26737/ U6 - https://doi.org/10.1002/anie.200601796 ER -