TY  - JOUR
A1  - Heinze, Daniel
A1  - Mang, Thomas
A1  - Peter, Karin
A1  - Möller, Martin
A1  - Weichold, Oliver
T1  - Synthesis of low molecular weight poly(vinyl acetate) and its application as plasticizer
JF  - Journal of applied polymer science
N2  - Poly(vinyl acetate), PVAc, with a degree of polymerization Xn = 10 was prepared by chain-transfer radical polymerization using carbon tetrachloride and used as oligomeric plasticizer for commercial PVAc. However, the chlorinated chain ends cause a low thermal stability requiring mild Cl/H substitution. The product exhibits high thermal stability and excellent melt-compounding properties. Blends of oligomeric and commercial PVAc show single glass transition temperatures which decrease with higher oligomer content and exhibit small negative deviations from Fox' linear additivity rule. This indicates plasticization and miscibility being mainly due to entropic effects. Injection-moulded thick specimens show ductile behaviour at oligomer contents >10 wt %, while sheets with a thickness of 0.2–0.5 mm appear flexible already at 7.5 wt %. The oxygen permeability coefficients are an order of magnitude lower than those of low-density polyethylene. Due to the sum of their properties, the plasticized sheets present a promising alternative in the preparation of barrier materials.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/app.40226
SN  - 1097-4628 (E-Journal); 0021-8995 (Print)
VL  - 131
IS  - 9
SP  - Article No. 40226
PB  - Wiley
CY  - New York
ER  - 
TY  - JOUR
A1  - Dutta, Suryendu
A1  - Hartkopf-Fröder, Christoph
A1  - Witte, Karin
A1  - Brocke, Rainer
A1  - Mann, Ulrich
T1  - Molecular characterization of fossil palynomorphs by transmission micro-FTIR spectroscopy: implications for hydrocarbon source evaluation
JF  - International journal of coal geology
Y1  - 2013
SN  - 1872-7840 (E-Journal); 0166-5162 (Print)
VL  - Vol. 115
SP  - 13
EP  - 23
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Meyer-Stork, L. Sebastian
A1  - Kalbe, Jochen
A1  - Kuropka, Rolf
A1  - Sauter, S. L.
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
T1  - Eindeutige Provenienzanalyse von Wolle und feinen Tierhaaren mit Hilfe der Erbsubstanz (DNS)
JF  - Textilveredlung : schweizerische Zeitschrift für Textilchemie, Textilveredlung und deren Randgebiete
Y1  - 1988
SN  - 0040-5310
VL  - 23
IS  - 9
SP  - 304
EP  - 307
ER  - 
TY  - JOUR
A1  - Krüger, Götz
A1  - Grötzinger, Joachim
A1  - Berndt, Heinz
T1  - Enantiomeric resolution of amino acid derivatives on chiral stationary phases by high-performance liquid chromatography
JF  - Journal of Chromatography A
Y1  - 1987
U6  - http://dx.doi.org/10.1016/S0021-9673(01)85005-6
SN  - 0021-9673
VL  - 1987
IS  - 397
SP  - 223
EP  - 232
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
A1  - Klostermeyer, Henning
A1  - Zahn, Helmut
T1  - Zur Synthese monomerer cyclischer Cystinpeptidderivate, I : Synthese der Sequenz A 6–9 des Schafinsulins als Cyclocystinylderivat
JF  - Justus Liebigs Annalen der Chemie
N2  - Es wird die Synthese der Sequenz A 6–9 des Schafinsulins in der geschützten Form Boc-Cys-Cys-Ala-Gly-OBuᵗ (5) sowie das Verhalten dieses monomeren cyclischen Cystinpeptidderivates gegenüber den in der Peptidchemie gebräuchlichen Reagenzien Bortrifluorid/Eisessig, Triäthylamin und Hydrazinhydrat beschrieben.
Y1  - 1972
U6  - http://dx.doi.org/10.1002/jlac.19727590109
SN  - 1099-0690
VL  - 759
IS  - 1
SP  - 114
EP  - 120
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schnabel, Eugen
A1  - Schnabel, Henning
A1  - Berndt, Heinz
T1  - Zur selektiven acidolytischen Abspaltbarkeit der tert.-Butyloxycarbonyl-Gruppe
JF  - Justus Liebigs Annalen der Chemie
N2  - Die tert.-Butyloxycarbonyl-Gruppe (Boc) läßt sich mittels reiner Trifluoressigsäure nicht selektiv neben dem Benzyloxycarbonyl-Rest (Z) abspalten. Das gelingt auch nicht mit Lösungen von Trifluoressigsäure bzw. Chlorwasserstoff in organischen Lösungsmitteln. Kern-substituierte Z-Gruppen wie Z(pCl), Z(mCl) oder Z(pNO₂) sind zwar stabiler, werden aber von den obengenannten Reagenzien ebenfalls angegriffen bzw. sind nicht mehr acidolytisch abspaltbar. – Mit 70proz. wäßriger Trifluoressigsäure gelingt die Abspaltung von Boc neben Z dagegen fast selektiv; dabei werden aber Benzylester, besonders Glutaminsäure-γ-benzylester, teilweise hydrolysiert, während Methyl- sowie Äthylester nahezu beständig sind. Die Brauchbarkeit des Abspaltungsverfahrens wird anhand der schrittweise durchgeführten Synthese zweier Heptapeptid-Derivate gezeigt. – Ähnlich spezifisch gelingt die Abspaltung von Boc mit Bortrifluorid-ätherat in Eisessig; Benzylester sind gegenüber diesem Reagenz stabiler als gegen wäßrige Trifluoressigsäure. Das Bortrifluorid-Verfahren eignet sich besonders für die Abspaltung von Boc-Gruppen neben säurelabilen Thiol-Schutzgruppen (Tetrahydropyranyl- bzw. Trityl-Rest) sowie neben dem Cyclocystinyl-Rest. Die Leistungsfähigkeit der Methode wird durch die Synthese zweier Peptid-Derivate mit S-Trityl-Schutzgruppen belegt. Als Nebenreaktion ist die Acetylierung von aliphatischen Hydroxylgruppen möglich. Sie läßt sich vermeiden, wenn man die Spaltung in anderen Lösungsmitteln durchführt. Die als Modellverbindungen für Stabilitätsuntersuchungen verwendeten Nε-acylierten Lysin-Derivate werden mit dem Aminosäureanalysator quantitativ neben Lysin bestimmt.
Y1  - 1971
U6  - http://dx.doi.org/10.1002/jlac.19717490111
SN  - 1099-0690
VL  - 749
IS  - 1
SP  - 90
EP  - 108
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Synthesis of hapten–polypeptide conjugates as antigen models for the N-terminal region of the α-2-chain of rabbit skin collagen
JF  - Journal of the Royal Society of Chemistry: Perkin Transactions 1
N2  - Synthesis of derivatives of the peptide sequence L-pyroglutamyl-L-phenylalanyl-L-aspartyl-glycyl-L-lysyl-glycyl-glycyl-glycine as the antigenic determinant representing the N-terminal non-helical region of the α-2-chain of rabbit skin collagen, and conjugation to two different polypeptide carriers, are described.
Y1  - 1978
U6  - http://dx.doi.org/10.1039/P19780000260
SN  - 1364-5463
SN  - 0300-922X
SN  - 1470-4358
VL  - 1978
IS  - 3
SP  - 260
EP  - 263
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Darstellung von Bis(S-methoxycarbonylthio)-B-Kette des Rinderinsulins
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.773
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 773
EP  - 776
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
T1  - Synthese der Sequenz 71—86 des Humanproinsulins, III : Synthese über die Fragmente 71—78 und 79—86
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.765
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 765
EP  - 772
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
T1  - Synthese der Sequenz 71—86 des Humanproinsulins, I : Synthese der Sequenz 71—86 als monomeres cyclisches Biscystinpeptidderivat und als Tetra-S-tritylderivat
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.1.747
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 1
SP  - 747
EP  - 760
ER  - 
TY  - JOUR
A1  - Naithani, V. K
A1  - Klostermeyer, Henning
A1  - Lange, H. R.
A1  - [u.a.], 
A1  - Berndt, Heinz
A1  - [u.a.], 
T1  - Preparation of peptide derivatives for porcine proinsulin-synthesis
JF  - Biological Chemistry
Y1  - 1971
U6  - http://dx.doi.org/10.1515/bchm2.1971.352.1.1
SN  - 1437-4315
VL  - 352
IS  - 1
SP  - 2
EP  - 3
PB  - De Gruyter
ER  - 
TY  - JOUR
A1  - Matoni, Georg
A1  - Berndt, Heinz
T1  - Thermal synthesis of the optical pure pentapeptide derivative Z-(L)-Ala-(L)-Phe-Gly-(L)-Phe-Gly-OMe
JF  - Tetrahedron letters
Y1  - 1980
U6  - http://dx.doi.org/10.1016/S0040-4039(00)93618-9
SN  - 0040-4039
VL  - 21
IS  - 1
SP  - 37
EP  - 40
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Studies on sulfur-containing peptides : tert-butyloxycarbonylsulfenyl and benzyloxycarbonylsulfenyl derivatives as protecting groups for cysteine
JF  - The journal of organic chemistry
Y1  - 1978
U6  - http://dx.doi.org/10.1021/jo00419a046
SN  - 0022-3263
VL  - 43
IS  - 25
SP  - 4893
EP  - 4895
PB  - American Chemical Society
CY  - Washington
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
A1  - Gattner, Hans-Gregor
A1  - Zahn, Helmut
T1  - Semisynthetisches Des-A1-glycin-Schafinsulin
JF  - Biological Chemistry
Y1  - 1975
U6  - http://dx.doi.org/10.1515/bchm2.1975.356.2.1455
SN  - 1437-4315
VL  - 356
IS  - 2
SP  - 1469
EP  - 1472
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
A1  - Zahn, Helmut
T1  - Peptide, 99 : Monomere cyclische Cystinpeptidderivate, III ; Synthese der Schafinsulin-A-Kettensequenzen A2–21 und A1–21 als monomere cyclische Dicystinpeptidderivate
JF  - Justus Liebigs Annalen der Chemie
N2  - Die Synthese der Sequenzen A2—21 (13) und A1—21 (15) der Schafinsulin-A-Kette als monomere cyclische Dicystinpeptidderivate wird beschrieben. Die intrachenaren Cystinbrücken A6—7 und A 11 —20 vermitteln die Löslichkeit dieser Derivate in Dimethylformamid und ermöglichen erstmalig die Reindarstellung vollgeschützter Insulin-A-Kettenderivate. Die während der Synthese eingesetzten Schutzgruppen lassen sich mittels Trifluoressigsäure und 2-Mercaptoäthanol quantitativ entfernen.
Y1  - 1975
U6  - http://dx.doi.org/10.1002/jlac.197519750908
SN  - 1099-0690
VL  - 1975
IS  - 9
SP  - 1601
EP  - 1612
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schwertner, Eberhard
A1  - Berndt, Heinz
A1  - Gielen, Hans-Günter
A1  - Zahn, Helmut
T1  - Peptide 96 : Synthese einiger [2-(p-Biphenylyl)isopropyloxycarbonyl]-Aminosäurederivate
JF  - Justus Liebigs Annalen der Chemie
N2  - Die Darstellung der N-[2-(p-Biphenylyl)isopropyloxycarbonyl]-Derivate (Bpoc-Derivate) des Cysteins unter Verwendung der Thiolschutzgruppen Tetrahydropyranyl (Thp) für 1, Diphenylmethyl (Dpm) für 2, Trityl (Trt) für 3 und S-tert.-Butyl (SBut) für 4 sowie die Synthese von aktivierten Estern der Bpoc-Derivate des Glycins (5), Isoleucins (6) und Prolins (7) werden beschrieben. An einem Beispiel wird die Möglichkeit aufgezeigt, die Bpoc-Gruppe über das Bpoc-Azid nachträglich in den Peptidverband einzuführen.
Y1  - 1975
U6  - http://dx.doi.org/10.1002/jlac.197519750318
SN  - 1099-0690
VL  - 75
IS  - 3
SP  - 581
EP  - 585
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Turck, Christoph W.
A1  - Berndt, Heinz
T1  - Synthese definierter Peptid-Derivate durch Aminolyse von 3-(Nα-Acyl-peptidyloxy)-2-hydroxy-N-alkylbenzamiden bei erhöhten Temperaturen, I : Synthese des Modellpeptid-Derivates Z-Ala-Phe-Gly-N(Et)2
JF  - Hoppe-Seyler´s Zeitschrift für physiologische Chemie
Y1  - 1981
U6  - http://dx.doi.org/10.1515/bchm2.1981.362.1.821
SN  - 1437-4315
SN  - 0018-4888
VL  - 362
IS  - 1
SP  - 821
EP  - 828
ER  - 
TY  - JOUR
A1  - Danho, Waleed
A1  - Naithani, Vinod K.
A1  - Sasaki, André N.
A1  - Föhles, Joseph
A1  - Berndt, Heinz
A1  - [u.a.], 
T1  - Human proinsulin, VII : synthesis of two protected peptides corresponding to the sequences 1—45 and 46—86 of the prohormone
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1980
U6  - http://dx.doi.org/10.1515/bchm2.1980.361.1.857
SN  - 1437-4315
SN  - 0018-4888
VL  - 361
IS  - 1
SP  - 857
EP  - 863
ER  - 
TY  - JOUR
A1  - Wolf, Günter
A1  - Berndt, Heinz
A1  - Brandenburg, Dietrich
T1  - Synthese der [LysA13] Rinderinsulin-A-Kette in der Form [Lys(Tfa)A13]A(SO3H)4 und NαA1-Msc-[LysA13]A(SO3H)4 unter Verwendung des S-tert-Butylmercapto-Restes als Thiolschutzgruppe
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.2.1569
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 2
SP  - 1569
EP  - 1578
ER  - 
TY  - JOUR
A1  - Wilhelm, Wolff
A1  - Berndt, Heinz
A1  - Brandenburg, Dietrich
T1  - Zur Synthese der Hühnerinsulin-A-Kette, I : Darstellung der Fragmente A1–8, A9–15, A1–7 und A8–15
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.2.1559
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 2
SP  - 1559
EP  - 1568
ER  - 
TY  - JOUR
A1  - Wolf, Wilhelm
A1  - Berndt, Heinz
A1  - Brandenburg, Dietrich
T1  - Synthese von Fragmenten einer [LysA13] Rinder-Insulin-A-Kette unter Verwendung des S-tert-Butylmercaptorestes als Thiolschutz
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.2.1549
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 2
SP  - 1549
EP  - 1558
ER  - 
TY  - JOUR
A1  - Gielen, Hans-Günther
A1  - Wolf, Günter
A1  - Berndt, Heinz
A1  - Zahn, Helmut
T1  - Synthese der Fragmente A1–8, A9–15 und A16–21 der Schafinsulin-A-Kette unter Verwendung des S-tert-Butylmercaptorestes als Thiolschutzgruppe
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1979
U6  - http://dx.doi.org/10.1515/bchm2.1979.360.2.1535
SN  - 1437-4315
SN  - 0018-4888
VL  - 360
IS  - 2
SP  - 1535
EP  - 1548
ER  - 
TY  - JOUR
A1  - Berndt, Heinz
A1  - Krüger, Götz
T1  - Resolution of enantiomeric amino acid derivatives by high-performance liquid chromatography on chiral stationary phases
JF  - Journal of chromatography A
Y1  - 1985
U6  - http://dx.doi.org/10.1016/S0021-9673(01)92461-6
SN  - 0021-9673
VL  - 1985
IS  - 348
SP  - 275
EP  - 279
ER  - 
TY  - JOUR
A1  - Wang, Ren-Qi
A1  - Druckenmüller, Katharina
A1  - Elbers, Gereon
A1  - Guenther, Klaus
A1  - Croué, Jean-Philippe
T1  - Analysis of aquatic-phase natural organic matter by optimized LDI-MS method
JF  - Journal of mass spectrometry
N2  - The composition and physiochemical properties of aquatic-phase natural organic matter (NOM) are most important problems for both environmental studies and water industry. Laser desorption/ionization (LDI) mass spectrometry facilitated successful examinations of NOM, as humic and fulvic acids in NOM are readily ionized by the nitrogen laser. In this study, hydrophobic NOMs (HPO NOMs) from river, reservoir and waste water were characterized by this technique. The effect of analytical variables like concentration, solvent composition and laser energy was investigated. The exact masses of small molecular NOM moieties in the range of 200–1200 m/z were determined in reflectron mode. In addition, spectra of post-source-decay experiments in this range showed that some compounds from different natural NOMs had the same fragmental ions. In the large mass range of 1200–15 000 Da, macromolecules and their aggregates were found in HPO NOMs from natural waters. Highly humic HPO exhibited mass peaks larger than 8000 Da. On the other hand, the waste water and reservoir water mainly had relatively smaller molecules of about 2000 Da. The LDI-MS measurements indicated that highly humic river waters were able to form large aggregates and membrane foulants, while the HPO NOMs from waste water and reservoir water were unlikely to form large aggregates. Copyright © 2014 John Wiley & Sons, Ltd.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/jms.3321
SN  - 1096-9888
VL  - 49
IS  - 2
SP  - 154
EP  - 160
PB  - Wiley
CY  - Bognor Regis
ER  - 
TY  - JOUR
A1  - Heine, A.
A1  - Herrmann, G.
A1  - Selmer, Thorsten
A1  - Terwesten, F.
A1  - Buckel, W.
A1  - Reuter, K.
T1  - High resolution crystal structure of clostridium propionicum β-Alanyl-CoA:Ammonia Lyase, a new member of the "Hot Dog Fold" protein superfamily
JF  - Proteins
N2  - Clostridium propionicum is the only organism known to ferment β-alanine, a constituent of coenzyme A (CoA) and the phosphopantetheinyl prosthetic group of holo-acyl carrier protein. The first step in the fermentation is a CoA-transfer to β-alanine. Subsequently, the resulting β-alanyl-CoA is deaminated by the enzyme β-alanyl-CoA:ammonia lyase (Acl) to reversibly form ammonia and acrylyl-CoA. We have determined the crystal structure of Acl in its apo-form at a resolution of 0.97 Å as well as in complex with CoA at a resolution of 1.59 Å. The structures reveal that the enyzme belongs to a superfamily of proteins exhibiting a so called “hot dog fold” which is characterized by a five-stranded antiparallel β-sheet with a long α-helix packed against it. The functional unit of all “hot dog fold” proteins is a homodimer containing two equivalent substrate binding sites which are established by the dimer interface. In the case of Acl, three functional dimers combine to a homohexamer strongly resembling the homohexamer formed by YciA-like acyl-CoA thioesterases. Here, we propose an enzymatic mechanism based on the crystal structure of the Acl·CoA complex and molecular docking. Proteins 2014; 82:2041–2053. © 2014 Wiley Periodicals, Inc.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/prot.24557
SN  - 1097-0134 (E-Journal); 0887-3585 (Print)
VL  - 82
IS  - 9
SP  - 2041
EP  - 2053
PB  - Wiley-Liss
CY  - New York
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Gronsfeld, A.
A1  - Schütz-Lembach, G.
T1  - Nachdenklichkeit über Nachhaltigkeit : wie uns ein neues Wort alte Probleme neu entdecken läßt
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1997
SN  - 0172-1623
VL  - 19
IS  - 87
SP  - 6
EP  - 11
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Peschel, G.
T1  - Aktuelle Entwicklungen zur Luftreinhaltung in der Stadt Aachen
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1998
SN  - 0172-1623
VL  - 20
IS  - 91
SP  - 22
EP  - 29
ER  - 
TY  - JOUR
A1  - Wiezorek, E.
A1  - Baumann, Marcus
T1  - Stadtökologie in der Stadtplanung: der "Stadtökologische Beitrag" Aachen
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1999
SN  - 0172-1623
VL  - 21
IS  - 97
SP  - 28
EP  - 37
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Biselli, Manfred
A1  - Selmer, Thorsten
A1  - Öhlschläger, Peter
A1  - Baumann, Marcus
A1  - Förster, Arnold
A1  - Poghossian, Arshak
T1  - Forschung „zwischen“ den Disziplinen: das Institut für Nano- und Biotechnologien
JF  - Analytik news : das Online-Labormagazin für Labor und Analytik
N2  - "Biologie trifft Mikroelektronik", das Motto des Instituts für Nano- und Biotechnologien (INB) an der FH Aachen, unterstreicht die zunehmende Bedeutung interdisziplinär geprägter Forschungsaktivitäten. Der thematische Zusammenschluss grundständiger Disziplinen, wie die Physik, Elektrotechnik, Chemie, Biologie sowie die Materialwissenschaften, lässt neue Forschungsgebiete entstehen, ein herausragendes Beispiel hierfür ist die Nanotechnologie: Hier werden neue Werkstoffe und Materialien entwickelt, einzelne Nanopartikel oder Moleküle und deren Wechselwirkung untersucht oder Schichtstrukturen im Nanometerbereich aufgebaut, die neue und vorher nicht bekannte Eigenschaften hervorbringen.

Vor diesem Hintergrund bündelt das im Jahre 2006 gegründete INB die an der FH Aachen vorhandenen Kompetenzen von derzeit insgesamt sieben Laboratorien auf den Gebieten der Halbleitertechnik und Nanoelektronik, Nanostrukturen und DNA-Sensorik, der Chemo- und Biosensorik, der Enzymtechnologie, der Mikrobiologie und Pflanzenbiotechnologie, der Zellkulturtechnik, sowie der Roten Biotechnologie synergetisch. In der Nano- und Biotechnologie steckt außergewöhnliches Potenzial! Nicht zuletzt deshalb stellen sich die Forscher der Herausforderung, in diesem Bereich gemeinsam zu forschen und Schnittstellen zu nutzen, um so bei der Gestaltung neuartiger Ideen und Produkte mitzuwirken, die zukünftig unser alltägliches Leben verändern werden.

Im Folgenden werden die verschiedenen Forschungsbereiche kurz zusammenfassend vorgestellt und vorhandene Interaktionen anhand von exemplarisch ausgewählten, aktuellen Forschungsprojekten skizziert.
Y1  - 2012
VL  - Publ. online
PB  - Dr. Beyer Internet-Beratung
CY  - Ober-Ramstadt
ER  - 
TY  - JOUR
A1  - Takenaga, Shoko
A1  - Biselli, Manfred
A1  - Schnitzler, Thomas
A1  - Öhlschläger, Peter
A1  - Wagner, Torsten
A1  - Schöning, Michael Josef
T1  - Toward multi-analyte bioarray sensors: LAPS-based on-chip determination of a Michaelis–Menten-like kinetics for cell culturing
JF  - Physica status solidi A : Applications and materials science
N2  - The metabolic activity of Chinese hamster ovary (CHO) cells was observed using a light-addressable potentiometric sensor (LAPS). The dependency toward different glucose concentrations (17–200 mM) follows a Michaelis–Menten kinetics trajectory with Kₘ = 32.8 mM, and the obtained Kₘ value in this experiment was compared with that found in literature. In addition, the pH shift induced by glucose metabolism of tumor cells transfected with the HPV-16 genome (C3 cells) was successfully observed. These results indicate the possibility to determine the tumor cells metabolism with a LAPS-based measurement device.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/pssa.201330464
SN  - 1521-396X (E); 1862-6319 (E-Journal); 0031-8965 (Print); 1862-6300 (Print)
VL  - 211
IS  - 6
SP  - 1410
EP  - 1415
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Whitehead, Mark
A1  - Öhlschläger, Peter
A1  - Almajhdi, Fahad N.
A1  - Alloza, Leonor
A1  - Marzábal, Pablo
A1  - Meyers, Ann E.
A1  - Hitzeroth, Inga I.
A1  - Rybicki, Edward P.
T1  - Human papillomavirus (HPV) type 16 E7 protein bodies cause tumour regression in mice
JF  - BMC cancer
Y1  - 2014
U6  - http://dx.doi.org/10.1186/1471-2407-14-367
SN  - 1471-2407
IS  - 14:367
SP  - 1
EP  - 15
PB  - BioMed Central
CY  - London
ER  - 
TY  - JOUR
A1  - Küppers, Tobias
A1  - Steffen, Victoria
A1  - Hellmuth, Hendrik
A1  - O'Connell, Timothy
A1  - Bongaerts, Johannes
A1  - Maurer, Karl-Heinz
A1  - Wiechert, Wolfgang
T1  - Developing a new production host from a blueprint: Bacillus pumilus as an industrial enzyme producer
JF  - Microbial cell factories
Y1  - 2014
U6  - http://dx.doi.org/10.1186/1475-2859-13-46
SN  - 1475-2859 (E-Journal)
VL  - 13
SP  - Article No. 46
PB  - BioMed Central
CY  - London
ER  - 
TY  - JOUR
A1  - Guo, Yuanyuan
A1  - Miyamoto, Ko-ichiro
A1  - Wagner, Torsten
A1  - Schöning, Michael Josef
A1  - Yoshinobu, Tatsuo
T1  - Theoretical study and simulation of light-addressable potentiometric sensors
JF  - Physica status solidi (A) : applications and materials
N2  - The light-addressable potentiometric sensor (LAPS) is a semiconductor-based potentiometric sensor using a light probe with an ability of detecting the concentration of biochemical species in a spatially resolved manner. As an important biomedical sensor, research has been conducted to improve its performance, for instance, to realize high-speed measurement. In this work, the idea of facilitating the device-level simulation, instead of using an equivalent-circuit model, is presented for detailed analysis and optimization of the performance of the LAPS. Both carrier distribution and photocurrent response have been simulated to provide new insight into both amplitude-mode and phase-mode operations of the LAPS. Various device parameters can be examined to effectively design and optimize the LAPS structures and setups for enhanced performance.
Y1  - 2014
U6  - http://dx.doi.org/10.1002/pssa.201330354
SN  - 0031-8965
VL  - 211
IS  - 6
SP  - 1467
EP  - 1472
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Smith, Walker O.
A1  - Baumann, Marcus
A1  - Wilson, David L.
A1  - Aletsee, Ludwig
T1  - Phytoplankton biomass and productivity in the marginal ice zone of the Fram Strait during summer 1984
JF  - Journal of geophysical research
Y1  - 1987
SN  - 2156-2202 (E-Journal); 2169-9291 (E-Journal); 0148-0227 (Print); 2169-9275 (Print)
VL  - Vol. 92
IS  - Iss. C7
SP  - 6777
EP  - 6786
ER  - 
TY  - JOUR
A1  - Jahnke, J.
A1  - Baumann, Marcus
T1  - Differentiation between Phaeocystis pouchetii (Har.) Lagerheim and Phaeocystis globosa Scherffel
JF  - Hydrobiological bulletin
Y1  - 1987
SN  - 0165-1404 (Print); 1573-5125 (E-Journal)
VL  - Vol. 21
IS  - Iss. 2
SP  - 141
EP  - 147
ER  - 
TY  - JOUR
A1  - Aletsee, Ludwig
A1  - Baumann, Marcus
T1  - A laboratory incubator equipped with facilities to automatically simulate natural irradiance
JF  - Boletim do Instituto Oceanográfico / Universidade de São Paulo
Y1  - 1991
SN  - 1982-436X; 0080-6331
VL  - Vol. 39
IS  - No. 2
SP  - 155
EP  - 159
ER  - 
TY  - JOUR
A1  - Tüg, Helmut
A1  - Baumann, Marcus
T1  - Problems of UV-B radiation measurements in biological research : critical remarks on current techniques and suggestions for improvements
JF  - Geophysical research letters
Y1  - 1994
SN  - 1944-8007 (E-Journal); 0094-8276 (Print)
VL  - Vol. 21
IS  - Iss. 8
SP  - 689
EP  - 692
ER  - 
TY  - JOUR
A1  - Medlin, L. K.
A1  - Lange, M.
A1  - Baumann, Marcus
T1  - Genetic differentiation among three colony-forming species of Phaeocystis : further evidence for the phylogeny of the Prymnesiophyta
JF  - Phycologia
Y1  - 1994
SN  - 0031-8884
VL  - Vol. 33
IS  - Iss. 3
SP  - 199
EP  - 212
ER  - 
TY  - JOUR
A1  - Tüg, Helmut
A1  - Baumann, Marcus
T1  - Reply to the comments by R.L. McKenzie and P.V. Johnston on our paper “Problems of UV-B radiation measurements in biological research: Critical Remarks on current techniques and suggestions for improvements”
JF  - Geophysical research letters
Y1  - 1995
SN  - 1944-8007 (E-Journal); 0094-8276 (Print)
VL  - Vol. 22
IS  - Iss. 9
SP  - 1159
EP  - 1160
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
T1  - Algenblüten & Treibhauseffekt : Wechselwirkungen mit anthropogenen Aktivitäten
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1996
SN  - 0172-1623
VL  - 18
IS  - 81
SP  - 6
EP  - 11
ER  - 
TY  - JOUR
A1  - Meiners, Klaus
A1  - Baumann, Marcus
T1  - Lokale Beiträge zum globalen Klimaschutz
JF  - Wechselwirkung : Wissenschaft & vernetztes Denken
Y1  - 1997
SN  - 0172-1623
VL  - 19
IS  - 84
SP  - 6
EP  - 12
ER  - 
TY  - JOUR
A1  - Martinez, Ronny
A1  - Jakob, Felix
A1  - Tu, Ran
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schwaneberg, Ulrich
T1  - Increasing activity and thermal resistance of Bacillus gibsonii alkaline protease (BgAP) by directed evolution
JF  - Biotechnology and bioengineering
Y1  - 2013
SN  - 1097-0290 (E-Journal); 0006-3592 (Print); 0368-1467 (Print)
VL  - Vol. 110
IS  - Iss. 3
SP  - 711
EP  - 720
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Jakob, Felix
A1  - Martinez, Ronny
A1  - Mandawe, John
A1  - Hellmuth, Hendrik
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schwaneberg, Ulrich
T1  - Surface charge engineering of a Bacillus gibsonii subtilisin protease
JF  - Applied microbiology and biotechnology
Y1  - 2013
SN  - 1432-0614 (E-Journal); 0171-1741 (Print); 0175-7598 (Print); 0340-2118 (Print)
VL  - Vol. 97
IS  - Iss. 15
SP  - 6793
EP  - 6802
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Niehaus, F.
A1  - Gabor, E.
A1  - Wieland, S.
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Eck, J.
T1  - Enzymes for the laundry industries: tapping the vast metagenomic pool of alkaline proteases
JF  - Microbial biotechnology
Y1  - 2011
SN  - 1432-0614 (E-Journal); 0171-1741 (Print); 0175-7598 (Print); 0340-2118 (Print)
VL  - Vol. 4
IS  - Iss. 6
SP  - 767
EP  - 776
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Ribitsch, D.
A1  - Heumann, S.
A1  - Karl, W.
A1  - Gerlach, J.
A1  - Leber, R.
A1  - Birner-Gruenberger, R.
A1  - Gruber, K.
A1  - Eiteljoerg, I.
A1  - Remler, P.
A1  - Siegert, Petra
A1  - Lange, J.
A1  - Maurer, Karl-Heinz
A1  - Berg, G.
A1  - Guebitz, G. M.
A1  - Schwab, H.
T1  - Extracellular serine proteases from Stenotrophomonas maltophilia: Screening, isolation and heterologous expression in E. coli
JF  - Journal of biotechnology
N2  - A large strain collection comprising antagonistic bacteria was screened for novel detergent proteases. Several strains displayed protease activity on agar plates containing skim milk but were inactive in liquid media. Encapsulation of cells in alginate beads induced protease production. Stenotrophomonas maltophilia emerged as best performer under washing conditions. For identification of wash-active proteases, four extracellular serine proteases called StmPr1, StmPr2, StmPr3 and StmPr4 were cloned. StmPr2 and StmPr4 were sufficiently overexpressed in E. coli. Expression of StmPr1 and StmPr3 resulted in unprocessed, insoluble protein. Truncation of most of the C-terminal domain which has been identified by enzyme modeling succeeded in expression of soluble, active StmPr1 but failed in case of StmPr3.

From laundry application tests StmPr2 turned out to be a highly wash-active protease at 45 °C. Specific activity of StmPr2 determined with suc-l-Ala-l-Ala-l-Pro-l-Phe-p-nitroanilide as the substrate was 17 ± 2 U/mg. In addition we determined the kinetic parameters and cleavage preferences of protease StmPr2.
KW  - Alginate beads
KW  - Stenotrophomonas maltophilia
KW  - Detergent protease
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.jbiotec.2011.09.025
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - 157
IS  - 1
SP  - 140
EP  - 147
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Ribitsch, D.
A1  - Karl, W.
A1  - Birner-Gruenberger, R.
A1  - Gruber, K.
A1  - Eiteljoerg, I.
A1  - Remler, P.
A1  - Wieland, S.
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schwab, H.
T1  - C-terminal truncation of a metagenome-derived detergent protease for effective expression in E. coli
JF  - Journal of biotechnology
N2  - Recently, a new alkaline protease named HP70 showing highest homology to extracellular serine proteases of Stenotrophomonas maltophilia and Xanthomonas campestris was found in the course of a metagenome screening for detergent proteases (Niehaus et al., submitted for publication). Attempts to efficiently express the enzyme in common expression hosts had failed. This study reports on the realization of overexpression in Escherichia coli after structural modification of HP70. Modelling of HP70 resulted in a two-domain structure, comprising the catalytic domain and a C-terminal domain which includes about 100 amino acids. On the basis of the modelled structure the enzyme was truncated by deletion of most of the C-terminal domain yielding HP70-C477.

This structural modification allowed effective expression of active enzyme using E. coli BL21-Gold as the host. Specific activity of HP70-C477 determined with suc-l-Ala-l-Ala-l-Pro-l-Phe-p-nitroanilide as the substrate was 30 ± 5 U/mg compared to 8 ± 1 U/mg of the native enzyme. HP70-C477 was most active at 40 °C and pH 7–11; these conditions are prerequisite for a potential application as detergent enzyme. Determination of kinetic parameters at 40 °C and pH = 9.5 resulted in KM = 0.23 ± 0.01 mM and kcat = 167.5 ± 3.6 s⁻¹. MS-analysis of peptide fragments obtained from incubation of HP70 and HP70-C477 with insulin B indicated that the C-terminal domain influences the cleavage preferences of the enzyme. Washing experiments confirmed the high potential of HP70-C477 as detergent protease.
Y1  - 2010
U6  - http://dx.doi.org/10.1016/j.jbiotec.2010.09.947
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - 150
IS  - 3
SP  - 408
EP  - 416
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Siegert, Petra
A1  - McLeish, Michael J.
A1  - Baumann, Martin
A1  - Iding, Hans
A1  - Kneen, Malea M.
A1  - Kenyon, George L.
A1  - Pohl, Martina
T1  - Exchanging the substrate specificities of pyruvate decarboxylase from Zymomonas mobilis and benzoylformate decarboxylase from Pseudomonas putida
JF  - Protein engineering, design, and selection : peds
Y1  - 2005
SN  - 1460-213X (E-Journal); 1741-0134 (E-Journal); 0269-2139 (Print); 1741-0126 (Print)
VL  - Vol. 18
IS  - Iss. 7
SP  - 345
EP  - 357
ER  - 
TY  - JOUR
A1  - Dünkelmann, Pascal
A1  - Kolter-Jung, Doris
A1  - Nitsche, Adam
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Lingen, Bettina
A1  - Baumann, Martin
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - Development of a donor-acceptor concept for enzymatic cross-coupling reactions of adehydes : the first asymmetric cross-benzoin condensation
JF  - Journal of the American Chemical Society
Y1  - 2002
SN  - 1520-5126 (E-Journal); 0002-7863 (Print)
VL  - Vol. 124
SP  - 12084
EP  - 12085
ER  - 
TY  - JOUR
A1  - Dünnwald, Thomas
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - ChemInform Abstract: Enantioselective synthesis of (S)-2-Hydroxypropanone derivatives by Benzoylformate Decarboxylase Catalyzed C—C Bond Formation
JF  - Cheminform
Y1  - 2001
SN  - 1522-2667 (E-Journal); 0931-7597 (Print)
VL  - Vol. 32
IS  - Iss. 4
SP  - Publ. online
ER  - 
TY  - JOUR
A1  - Dünnwald, Thomas
A1  - Demir, Ayhan S.
A1  - Siegert, Petra
A1  - Pohl, Martina
A1  - Müller, Michael
T1  - Enantioselective Synthesis of (S)-2-Hydroxypropanone Derivatives by Benzoylformate Decarboxylase Catalyzed C−C Bond Formation
JF  - European journal of organic chemistry
Y1  - 2000
SN  - 0365-5490 (E-Journal); 1099-0690 (E-Journal); 0075-4617 (Print); 0170-2041 (Print); 0947-3440 (Print); 1434-193X (Print); 1434-243X (Print)
VL  - Vol. 2000
IS  - Iss. 11
SP  - 2161
EP  - 2170
ER  -