@article{KleuserStoeckleinPieperFuerstetal.2004,
  author    = {Kleuser, U. and St{\"o}cklein, Walter F. M. and Pieper-F{\"u}rst, U. and Scheller, Frieder W.},
  title     = {Partikelverst{\"a}rkte Oberfl{\"a}chenplasmonresonanz f{\"u}r die Quantifizierung von Matrix Metalloproteinase-2},
  year      = {2004},
  language  = {de}
}
@article{BeissenhirtzSchellerStoeckleinetal.2004,
  author    = {Beissenhirtz, Moritz Karl and Scheller, Frieder W. and St{\"o}cklein, Walter F. M. and Kurth, D. and M{\"o}hwald, Helmuth and Lisdat, Fred},
  title     = {Electroactive cytochrome c multilayers within a polyelectrolyte assembly},
  year      = {2004},
  language  = {en}
}
@article{LiuWollenbergerHalameketal.2005,
  author    = {Liu, Songqin and Wollenberger, Ursula and Halamek, Jan and Leupold, Eik and St{\"o}cklein, Walter F. M. and Warsinke, Axel and Scheller, Frieder W.},
  title     = {Affinity interaction betwen phenylboronic acid-carrying self-assembled monolayers and FAD or HRP},
  year      = {2005},
  abstract  = {A method is provided for the recognition of glycated molecules based on their binding affinities to boronate- carrying monolayers. The affinity interaction of flavin adenine dinucleotide (FAD) and horseradish peroxidase (HRP) with phenylboronic acid monolayers on gold was investigated by using voltammetric and microgravimetric methods. Conjugates of 3-aminopherrylboronic acid and 3,3'-dithiodipropionic acid di(N-hydroxysuccinimide ester) or 11-mercaptoundecanoic acid were prepared and self-assembled on gold surfaces to generate monolayers. FAD is bound to this modified sur-face and recognized by a pair of redox peaks with a formal potential of -0.433 V in a 0.1 m phosphate buffer solution, pH 6.5. Upon addition of a sugar to the buffer, the bound FAD could be replaced, indicating that the binding is reversible. Voltammetric, mass measurements, and photometric activity assays show that the HRP can also be bound to the interface. This binding is reversible, and HRP can be replaced by sorbitol or removed in acidic solution. The effects of pH, incubation time, and concentration of H2O2 were studied by comparing the catalytic reduction of H2O2 in the presence of the electron-donor thionine. The catalytic current of the HRP-loaded electrode was proportional to HRP concentrations in the incubation solution in the range between 5 mu g mL(-1) and 0.4 mg mL(-1) with a linear slope of 3.34 mu A mL mg(-1) and a correlation coefficient of 0.9945},
  language  = {en}
}
@article{Stoecklein2006,
  author    = {St{\"o}cklein, Walter F. M.},
  title     = {Molecule-detective},
  year      = {2006},
  abstract  = {Biosensors are analytical devices incorporating biological material (receptor) intimately associated with or integrated within a physicochernical transducer. Advantages are the high selectivity for analyte detection. Examples given comprise the very successful commercial blood glucose biosensors made for the self-control by the diabetic patients. Other biosensors are part of an analytic system, including the sensor chips Of surface plasmon resonance or interferometry based devices, piezoelectric or reflectometric sensors capable of direct measurement of mass changes, and thermometric and other reagentless sensors. The development of nanotubes-based devices allows for significant enhancment of the signal-to-noise ratio of the biosensors. A milestone on the way towards miniaturization and parallelization of biosensors is the recently developed and prize-winning electronic DNA chip},
  language  = {en}
}
@article{NeumannSchulteJuenemannetal.2006,
  author    = {Neumann, Meina and Schulte, Marc and J{\"u}nemann, Nora and St{\"o}cklein, Walter F. M. and Leimk{\"u}hler, Silke},
  title     = {Rhodobacter capsulatus XdhC is involved in molybdenum cofactor binding and insertion into xanthine dehydrogenase},
  doi       = {10.1074/jbc.M601617200},
  year      = {2006},
  abstract  = {Rhodobacter capsulatus xanthine dehydrogenase (XDH) is a cytoplasmic enzyme with an (alpha beta) 2 heterodimeric structure that is highly identical to homodimeric eukaryotic xanthine oxidoreductases. The crystal structure revealed that the molybdenum cofactor (Moco) is deeply buried within the protein. A protein involved in Moco insertion and XDH maturation has been identified, which was designated XdhC. XdhC was shown to be essential for the production of active XDH but is not a subunit of the purified enzyme. Here we describe the purification of XdhC and the detailed characterization of its role for XDH maturation. We could show that XdhC binds Moco in stoichiometric amounts, which subsequently can be inserted into Moco-free apo-XDH. A specific interaction between XdhC and XdhB was identified. We show that XdhC is required for the stabilization of the sulfurated form of Moco present in enzymes of the xanthine oxidase family. Our findings imply that enzyme-specific proteins exist for the biogenesis of molybdoenzymes, coordinating Moco binding and insertion into their respective target proteins. So far, the requirement of such proteins for molybdoenzyme maturation has been described only for prokaryotes},
  language  = {en}
}
@article{NitscheKurthDunkhorstetal.2007,
  author    = {Nitsche, Andreas and Kurth, Andreas and Dunkhorst, Anna and P{\"a}nke, Oliver and Sielaff, Hendrik and Junge, Wolfgang and Muth, Doreen and Scheller, Frieder W. and St{\"o}cklein, Walter F. M. and Pauli, Georg and Kage, Andreas},
  title     = {One-step selection of vaccinia virus binding DNA-aptamers by MonoLEX},
  doi       = {10.1186/1472-6750-7-48},
  year      = {2007},
  language  = {en}
}
@article{SchenkSellrieBoettgeretal.2007,
  author    = {Schenk, J{\"o}rg A. and Sellrie, Frank and B{\"o}ttger, Volker and Micheel, Burkhard and St{\"o}cklein, Walter F. M.},
  title     = {Generation and application of a fluorescein-specific single chain antibody},
  year      = {2007},
  abstract  = {A recombinant single chain antibody fragment (designated scDE1) of the murine monoclonal anti-fluorescein antibody B13-DE1 was generated using the original hybridoma cells as source for the variable antibody heavy and light chain (VH and VL) genes. After cloning the variable genes into a phage vector a functional antibody fragment was selected by phage display panning. Recombinant antibody could be expressed as phage antibody and as soluble single chain antibody in Escherichia coli. High yield of scDE1 could also be detected in bacterial culture supernatant. The scDE1 showed the same binding specificity as the parental monoclonal antibody, i.e. it bound fluorescein, fluorescein derivatives and a fluorescein peptide mimotope. Surface plasmon resonance revealed a K(D) of 19 nM for the scDE1 compared to 0.7 nM for the monoclonal antibody. The isolated soluble scDE1 could easily be conjugated to horseradish peroxidase which allowed the use of the conjugate as universal indicator for the detection of fluorescein-labelled proteins in different immunoassays. Detection of hCG in urine was performed as a model system using scDE1. In addition to E. coli the scFv genes could also be transferred and expressed in eukaryotic cells. Finally, we generated HEK293 cells expressing the scDE1 at the cell surface.},
  language  = {en}
}