@article{UlberPothMonzonetal.2010, author = {Ulber, Roland and Poth, Sebastian and Monzon, Magaly and Tippk{\"o}tter, Nils}, title = {Prozessintegration von Hydrolyse und Fermentation von Cellulose- Faserstoff}, series = {Chemie Ingenieur Technik}, volume = {82}, journal = {Chemie Ingenieur Technik}, number = {1-2}, issn = {1522-2640}, doi = {10.1002/cite.200900103}, pages = {135 -- 139}, year = {2010}, abstract = {Ein viel versprechender erneuerbarer Rohstoff f{\"u}r die Produktion von Chemikalien und Treibstoffen ist Lignocellulose aus pflanzlicher Biomasse. Die darin enthaltenen Zucker k{\"o}nnen mittels enzymatischer Hydrolyse freigesetzt und fermentativ zu Ethanol umgesetzt werden. Ein interessanter Ansatz ist dabei die simultane Verzuckerung und Fermentation. Hefen und Enzyme haben mit 30 °C bzw. 50 °C zwar unterschiedliche Temperaturoptima, es konnte aber gezeigt werden, dass auch bei den niedrigeren Temperaturen eine Umsetzung der Cellulose zu Glucose erfolgt, wenn auch langsamer als bei optimalen Bedingungen. Außerdem konnte in Vorversuchen gezeigt werden, dass Ethanol in den zu erwartenden Konzentrationen keinen Einfluss auf die enzymatische Umsetzung hat.}, language = {de} } @article{SiekerNeunerDimitrovaetal.2010, author = {Sieker, Tim and Neuner, Andreas and Dimitrova, Darina and Tippk{\"o}tter, Nils and Bart, Hans-J{\"o}rg and Heinzle, Elmar and Ulber, Roland}, title = {Grassilage als Rohstoff f{\"u}r die chemische Industrie}, series = {Chemie Ingenieur Technik}, volume = {82}, journal = {Chemie Ingenieur Technik}, number = {8, Special Issue: Industrielle Nutzung nachwachsender Rohstoffe}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1522-2640}, doi = {10.1002/cite.201000088}, pages = {1153 -- 1159}, year = {2010}, abstract = {Grassilage stellt einen nachwachsenden Rohstoff mit großem Potenzial dar. Neben Cellulose und Hemicellulose enth{\"a}lt sie auch organische S{\"a}uren, insbesondere Milchs{\"a}ure. In einem Bioraffinerie-Projekt wird die Milchs{\"a}ure aus der Silage isoliert und mit gentechnisch optimierten St{\"a}mmen zu L-Lysin weiterverarbeitet. Die Lignocellulose wird hydrolysiert und zu Ethanol fermentiert. Ein besonderes Augenmerk liegt auf der Integration der unterschiedlichen Prozesse sowie der einzelnen Prozessschritte zu einem Gesamtprozess, der s{\"a}mtliche Inhaltsstoffe der Silage verwertet.}, language = {de} } @article{DegeringEggertPulsetal.2010, author = {Degering, Christian and Eggert, Thorsten and Puls, Michael and Bongaerts, Johannes and Evers, Stefan and Maurer, Karl-Heinz and Jaeger, Karl-Erich}, title = {Optimization of protease secretion in Bacillus subtilis and Bacillus licheniformis by screening of homologous and herologous signal peptides}, series = {Applied and environmental microbiology}, volume = {76}, journal = {Applied and environmental microbiology}, number = {19}, publisher = {American Society for Microbiology}, address = {Washington, DC}, issn = {1098-5336 (E-Journal); 0003-6919 (Print); 0099-2240 (Print)}, doi = {10.1128/AEM.01146-10}, pages = {6370 -- 6378}, year = {2010}, abstract = {Bacillus subtilis and Bacillus licheniformis are widely used for the large-scale industrial production of proteins. These strains can efficiently secrete proteins into the culture medium using the general secretion (Sec) pathway. A characteristic feature of all secreted proteins is their N-terminal signal peptides, which are recognized by the secretion machinery. Here, we have studied the production of an industrially important secreted protease, namely, subtilisin BPN′ from Bacillus amyloliquefaciens. One hundred seventy-three signal peptides originating from B. subtilis and 220 signal peptides from the B. licheniformis type strain were fused to this secretion target and expressed in B. subtilis, and the resulting library was analyzed by high-throughput screening for extracellular proteolytic activity. We have identified a number of signal peptides originating from both organisms which produced significantly increased yield of the secreted protease. Interestingly, we observed that levels of extracellular protease were improved not only in B. subtilis, which was used as the screening host, but also in two different B. licheniformis strains. To date, it is impossible to predict which signal peptide will result in better secretion and thus an improved yield of a given extracellular target protein. Our data show that screening a library consisting of homologous and heterologous signal peptides fused to a target protein can identify more-effective signal peptides, resulting in improved protein export not only in the original screening host but also in different production strains.}, language = {en} } @article{WernerKrumbeSchumacheretal.2011, author = {Werner, Frederik and Krumbe, Christoph and Schumacher, Katharina and Groebel, Simone and Spelthahn, Heiko and Stellberg, Michael and Wagner, Torsten and Yoshinobu, Tatsuo and Selmer, Thorsten and Keusgen, Michael and Baumann, Marcus and Sch{\"o}ning, Michael Josef}, title = {Determination of the extracellular acidification of Escherichia coli by a light-addressable potentiometric sensor}, series = {Physica status solidi (a) : applications and material science. 208 (2011), H. 6}, journal = {Physica status solidi (a) : applications and material science. 208 (2011), H. 6}, publisher = {Wiley}, address = {Weinheim}, isbn = {1862-6319}, pages = {1340 -- 1344}, year = {2011}, language = {en} } @article{WernerGroebelWagneretal.2011, author = {Werner, Frederik and Groebel, Simone and Wagner, Torsten and Yoshinobu, Tatsuo and Selmer, Thorsten and Baumann, Marcus and Sch{\"o}ning, Michael Josef}, title = {{\"U}berwachung der metabolischen Aktivit{\"a}t von Mikroorganismen zur Kontrolle des biologischen Prozesses im Biogasfermenter}, series = {Biogas 2011 : Energietr{\"a}ger der Zukunft ; 6. Fachtagung, Fachtagung Braunschweig, 08. und 09. Juni 2011 / VDI Energie und Umwelt}, journal = {Biogas 2011 : Energietr{\"a}ger der Zukunft ; 6. Fachtagung, Fachtagung Braunschweig, 08. und 09. Juni 2011 / VDI Energie und Umwelt}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092121-1}, pages = {285 -- 286}, year = {2011}, language = {de} } @article{MartinsBlaserFeliksetal.2011, author = {Martins, Berta M. and Blaser, Martin and Feliks, Mikolaj and Ullmann, Matthias G. and Buckel, Wolfgang and Selmer, Thorsten}, title = {Structural basis for a Kolbe-type decarboxylation catalyzed by a glycyl radical enzyme}, series = {Journal of the American Chemical Society}, journal = {Journal of the American Chemical Society}, publisher = {ACS Publications}, address = {Washington, DC}, pages = {1 -- 33}, year = {2011}, language = {en} } @article{SchiffelsBaumannSelmer2011, author = {Schiffels, Johannes and Baumann, Marcus and Selmer, Thorsten}, title = {Facile analysis of short-chain fatty acids as 4-nitrophenyl esters in complex anaerobic fermentation samples by high performance liquid chromatography}, series = {Journal of Chromatography A. 1218 (2011), H. 34}, journal = {Journal of Chromatography A. 1218 (2011), H. 34}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0021-9673}, pages = {5848 -- 5851}, year = {2011}, language = {en} } @article{BaeckerDellePoghossianetal.2011, author = {B{\"a}cker, Matthias and Delle, L. and Poghossian, Arshak and Biselli, Manfred and Zang, Werner and Wagner, P. and Sch{\"o}ning, Michael Josef}, title = {Electrochemical sensor array for bioprocess monitoring}, series = {Electrochimica Acta (2011)}, volume = {56}, journal = {Electrochimica Acta (2011)}, number = {26}, publisher = {Elsevier}, address = {Amsterdam}, pages = {9673 -- 9678}, year = {2011}, language = {en} } @article{AggarwalSinghSinghetal.2011, author = {Aggarwal, Prerna and Singh, Virendra and Singh, Arjun and Scherer, Ulrich W. and Singh, Tejvir and Singla, Madan L. and Srivastava, Alok}, title = {Physico-chemical transformations in swift heavy ion modified poly(ethyleneterephthalate)}, series = {Radiation Physics and Chemistry}, journal = {Radiation Physics and Chemistry}, publisher = {Pergamon Press}, address = {Oxford}, isbn = {0969-806X}, pages = {1 -- 28}, year = {2011}, language = {en} } @article{OosterhuisOehlschlaegerBergetal.2011, author = {Oosterhuis, Koen and {\"O}hlschl{\"a}ger, Peter and Berg, Joost H. van den and Toebes, Mireille and Gomez, Raquel and Schumacher, Ton N. and Haanen, John B.}, title = {Preclinical development of highly effective and safe DNA vaccines directed against HPV 16 E6 and E7}, series = {International Journal of Cancer}, volume = {129}, journal = {International Journal of Cancer}, number = {2}, publisher = {Wiley}, address = {Weinheim}, isbn = {1097-0215}, pages = {397 -- 406}, year = {2011}, language = {en} }