@article{MuschallikMolinnusBongaertsetal.2017,
  author    = {Muschallik, Lukas and Molinnus, Denise and Bongaerts, Johannes and Pohl, Martina and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Siegert, Petra and Selmer, Thorsten},
  title     = {(R,R)-Butane-2,3-diol Dehydrogenase from Bacillus clausii DSM 8716T: Cloning and Expression of the bdhA-Gene, and Initial Characterization of Enzyme},
  series = {Journal of Biotechnology},
  volume    = {258},
  journal   = {Journal of Biotechnology},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0168-1656},
  doi       = {10.1016/j.jbiotec.2017.07.020},
  pages     = {41 -- 50},
  year      = {2017},
  abstract  = {The gene encoding a putative (R,R)-butane-2,3-diol dehydrogenase (bdhA) from Bacillus clausii DSM 8716T was isolated, sequenced and expressed in Escherichia coli. The amino acid sequence of the encoded protein is only distantly related to previously studied enzymes (identity 33-43\%) and exhibited some uncharted peculiarities. An N-terminally StrepII-tagged enzyme variant was purified and initially characterized. The isolated enzyme catalyzed the (R)-specific oxidation of (R,R)- and meso-butane-2,3-diol to (R)- and (S)-acetoin with specific activities of 12 U/mg and 23 U/mg, respectively. Likewise, racemic acetoin was reduced with a specific activity of up to 115 U/mg yielding a mixture of (R,R)- and meso-butane-2,3-diol, while the enzyme reduced butane-2,3-dione (Vmax 74 U/mg) solely to (R,R)-butane-2,3-diol via (R)-acetoin. For these reactions only activity with the co-substrates NADH/NAD+ was observed. The enzyme accepted a selection of vicinal diketones, α-hydroxy ketones and vicinal diols as alternative substrates. Although the physiological function of the enzyme in B. clausii remains elusive, the data presented herein clearly demonstrates that the encoded enzyme is a genuine (R,R)-butane-2,3-diol dehydrogenase with potential for applications in biocatalysis and sensor development.},
  language  = {en}
}
@misc{BanowskiWaldmannLaueWadleetal.2004,
  author    = {Banowski, Bernhard and Waldmann-Laue, Marianne and Wadle, Armin and Siegert, Petra and S{\"a}ttler, Andreas},
  title     = {5-Lipoxigenase-Inhibitoren in Deodorantien und Antitranspirantien [Offenlegungsschrift]},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen / Den Hague},
  pages     = {1 -- 12},
  year      = {2004},
  language  = {de}
}
@article{HaegerBongaertsSiegert2022,
  author    = {Haeger, Gerrit and Bongaerts, Johannes and Siegert, Petra},
  title     = {A convenient ninhydrin assay in 96-well format for amino acid-releasing enzymes using an air-stable reagent},
  series = {Analytical Biochemistry},
  journal   = {Analytical Biochemistry},
  number    = {624},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1096-0309},
  doi       = {10.1016/j.ab.2022.114819},
  pages     = {Artikel 114819},
  year      = {2022},
  abstract  = {An improved and convenient ninhydrin assay for aminoacylase activity measurements was developed using the commercial EZ Nin™ reagent. Alternative reagents from literature were also evaluated and compared. The addition of DMSO to the reagent enhanced the solubility of Ruhemann's purple (RP). Furthermore, we found that the use of a basic, aqueous buffer enhances stability of RP. An acidic protocol for the quantification of lysine was developed by addition of glacial acetic acid. The assay allows for parallel processing in a 96-well format with measurements microtiter plates.},
  language  = {en}
}
@techreport{HaegerBongaertsSiegert2023,
  author    = {Haeger, Gerrit and Bongaerts, Johannes and Siegert, Petra},
  title     = {Abschlussbericht Teil II: Eingehende Darstellung Neue biobasierte Lipopeptide aus nachhaltiger Produktion (LipoPep)},
  pages     = {17Seiten},
  year      = {2023},
  language  = {de}
}
@techreport{SiegertBongaertsWagneretal.2022,
  author    = {Siegert, Petra and Bongaerts, Johannes and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Selmer, Thorsten},
  title     = {Abschlussbericht zum Projekt zur {\"U}berwachung biotechnologischer Prozesse mittels Diacetyl-/Acetoin-Biosensor und Evaluierung von Acetoin-Reduktasen zur Verwendung in Biotransformationen},
  address   = {Aachen},
  organization    = {FH Aachen},
  pages     = {16 Seiten},
  year      = {2022},
  language  = {de}
}
@article{PohlSiegertMeschetal.1998,
  author    = {Pohl, Martina and Siegert, Petra and Mesch, K. and Bruhn, H. and Gr{\"o}tzinger, Joachim},
  title     = {Active site mutants of pyruvate decarboxylase from Zymomonas mobilis : a site-directed mutagenesis study of L112, I472, I476, E473 and N482},
  series = {European journal of biochemistry},
  volume    = {Vol. 257},
  journal   = {European journal of biochemistry},
  number    = {Iss. 3},
  issn      = {1432-1033 (E-Journal); 1742-4658 (E-Journal); 0014-2956 (Print); 1742-464X (Print)},
  pages     = {538 -- 546},
  year      = {1998},
  language  = {en}
}
@misc{O'ConnellHovenSiegertetal.2007,
  author    = {O'Connell, Timothy and Hoven, Nina and Siegert, Petra and Maurer, Karl-Heinz},
  title     = {Amadoriasen in Wasch- und Reinigungsmitteln [Offenlegungsschrift]},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt / WIPO},
  address   = {M{\"u}nchen / Den Hague / Genf},
  pages     = {1 -- 45},
  year      = {2007},
  language  = {de}
}
@article{IdingSiegertMeschetal.1998,
  author    = {Iding, Hans and Siegert, Petra and Mesch, K. and Pohl, Martina},
  title     = {Application of α-keto acid decarboxylases in biotransformations},
  series = {Biochimica et biophysica acta (BBA) - Protein structure and molecular enzymology},
  volume    = {Vol. 1385},
  journal   = {Biochimica et biophysica acta (BBA) - Protein structure and molecular enzymology},
  number    = {Iss. 2},
  issn      = {1879-2588 (E-Journal); 0167-4838 (Print)},
  pages     = {307 -- 322},
  year      = {1998},
  language  = {en}
}
@misc{BanowskiWadleSiegert2004,
  author    = {Banowski, Bernhard and Wadle, Armin and Siegert, Petra},
  title     = {Arylsulfatase-Inhibitoren in Deodorantien und Antitranspirantien [Offenlegungsschrift]},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen / Den Hague},
  pages     = {1 -- 15},
  year      = {2004},
  language  = {de}
}
@misc{BanowskiWadleSiegert2003,
  author    = {Banowski, Bernhard and Wadle, Armin and Siegert, Petra},
  title     = {Arylsulfatase-Inhibitoren in Deodorantien und Antitranspirantien [Offenlegungsschrift]},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {1 -- 20},
  year      = {2003},
  language  = {de}
}