The mission of the Protein Technologies Facility (ProTech) is to further research in molecular and cell biology, protein biochemistry, and structural biology by overcoming major bottlenecks in these fields.
Our core services include molecular cloning, protein production and purification, and biophysical characterization of proteins. Since 2014, we also offer services surrounding the CRISPR/Cas9 genome engineering technology.
We offer customized generation of DNA constructs for recombinant protein production as a stand-alone service or as the first step in a protein production project. We are specialized in generating multi-gene expression constructs for production of protein complexes.
We offer recombinant protein production in E. coli, Drosophila S2 cells, insect cells using the baculovirus expression vector system (BEVS), and HEK293 cells.
Protein purification is offered as a full service at different scales. Due to limited capacity, for projects requiring purification of multiple proteins we also offer training and access to the equipment in our facility.
We offer protein characterization services using a variety of Biophysical techniques to study protein stability, oligomeric state, and secondary structure, or to analyze biomolecular interactions.
We also provide instrument training and access for some of these methods. To gain an overview of the techniques available, please see the Equipment section. More information can be found on the ProTech Wiki, accessible via MyVBCF. To discuss your biophysical characterization project, please contact Peggy Stolt-Bergner or Arthur Sedivy.
Our facility offers expertise in the CRISPR/Cas9 genome engineering method. Services include consultation and advice on experimental design; preparation of DNA, RNA, and protein reagents; and generation of knock-out and knock-in cell lines or plants.
The OmniSEC system combines analytical size exclusion chromatography with right angle light scattering and measurement of refractive index, to accurately determine protein molecular weights and concentrations. It can be used to analyze the oligomeric state of proteins and protein complexes and to quantify the different species present in a sample. A full UV-vis spectrum and intrinsic viscosity measurements enable the accurate determination of extinction coefficients and shape/size of protein samples.
The PEAQ-ITC instrument can be used to perform isothermal titration calorimetry experiments to measure biomolecular interaction parameters. The change in enthalpy upon ligand binding is directly measured by the instrument and can then be used to determine the dissociation constant, stoichiometry, and other thermodynamic parameters of the binding interaction. Interactions in the high nanomolar to high micromolar range can be determined using the PEAQ-ITC.
The MASS-1 instrument is a system for measuring biomolecular interactions by Surface Plasmon Resonance (SPR). In addition to determining dissociation constants, SPR is ideal for measuring kinetics of interactions (kon and koff).
The SPR service is only possible as a full-service. In exceptional cases, access is offered to experienced users.
DLS is a label free technique that analyzes particle size distribution in a bulk sample. It is mainly used for protein quality control, as you can detect size distributions of molecules and therefore aggregation and oligomerization of your protein of interest. The Dynapro II plate reader can also be used for screening or long-term stability measurements. Experiments can be carried out for you; alternatively, you may receive training and can then book the instrument yourself.
Circular Dichroism is a spectroscopic technique that uses circularly polarized light to study the structure of chiral molecules, such as proteins. The CD spectrum of a protein can be used to determine protein secondary structure or some aspects of tertiary structure. CD can also be used to study protein stability using thermal melt analysis to determine protein melting temperatures (Tm). We perform CD on a Chirascan Plus CD spectrometer from Applied Photophysics. Experiments can be carried out for you; alternatively, you may receive training and can then book the instrument yourself.
MST is a novel technique used to determine molecular affinities. Thermophoretic changes upon molecular interaction can be monitored by fluorescent labeling or via tryptophan fluorescence, revealing binding constants in the range of nM to mM. Unlike many other methods, MST experiments can be performed rapidly and with small amounts of sample. We have two instruments for performing MST experiments, the NT.115 and the NT.LabelFree. MST experiments can be performed as a service, or you can receive training and then book the instruments yourself.
If you are a new user, please contact Peggy Stolt-Bergner (for ProTech core services) or Krzysztof Chylinski (for genome engineering services) to discuss your project requirements. To order services and book instruments, please use our web-based booking and request system. IMP, IMBA, GMI, and MFPL users can log in with their usual institute network accounts. External users must register. For questions, please contact protech(at)vbcf.ac.at.
Pricing information can be found on the ProTech MyVBCF Wiki site.
Continuation of funding for VBCF-ProTech from the City of Vienna and the Austrian Federal Ministry of Education, Science, and Research (BMBFW) is dependent on documented evidence of contributions to scientific output. Therefore, please acknowledge use of the facility when publishing work for which ProTech services were used. Please also acknowledge training and instrument access provided by ProTech. A simple statement is sufficient and can either be placed in the Materials and Methods section or in the Acknowledgements.
Suggested format: "ProTech service" was performed by the VBCF Protein Technologies Facility (www.vbcf.ac.at). Your publication will then be listed on our website.
Mott GA, Smakowska-Luzan E, Pasha A, Parys K, Howton TC, Neuhold J, Lehner A, Grünwald K, Stolt-Bergner P, Provart NJ, Mukhtar MS, Desveaux D, Guttman DS, Belkhadir Y, Scientific Data 2019, 6:190025
Multiplex mutagenesis of four clustered CrRLK1L with CRISPR/Cas9 exposes their growth regulatory roles in response to metal ions
Richter J, Watson JM, Stasnik P, Borowska M, Neuhold J, Berger M, Stolt-Bergner P, Schoft V, Hauser MT. Scientific Reports, Article number: 12182 (2018)
Baculovirus-driven protein expression in insect cells: A benchmarking study
Stolt-Bergner P, Benda C, Bergbrede T, Besir H, Celie PHN, Chang C, Drechsel D, Fischer A, Geerlof A, Giabbai B, van den Heuvel J, Huber G, Knecht W, Lehner A, Lemaitre R, Nordén K, Pardee G, Racke I, Remans K, Sander A, Scholz J, Stadnik M, Storici P, Weinbruch D, Zaror I, Lua LHL, Suppmann S. J. Struct. Biol. 2018 Mar 12;
UFD-2 is an adaptor-assisted E3 ligase targeting unfolded proteins
Hellerschmied D, Roessler M, Lehner A, Gazda L, Stejskal K, Imre R, Mechtler K, Dammermann A, Clausen T. Nat Commun 2018 02 02; 9 (1)
An extracellular network of Arabidopsis leucine-rich repeat receptor kinases
Smakowska-Luzan E, Mott GA, Parys K, Stegmann M, Howton TC, Layeghifard M, Neuhold J, Lehner A, Kong J, Grünwald K, Weinberger N, Satbhai SB, Mayer D, Busch W, Madalinski M, Stolt-Bergner P, Provart NJ, Mukhtar MS, Zipfel C, Desveaux D, Guttman DS, Belkhadir Y. Nature 2018 Jan 18; 553 (7688)
Protection of Arabidopsis blunt-ended telomeres is mediated by a physical association with the Ku heterodimer
Valuchova S, Fulnecek J, Prokop Z, Stolt-Bergner P, Janouskova E, Hofr C, Riha K. Plant Cell epub 5 June 2017.
The receptor kinase FER is a RALF-regulated scaffold controlling plant immune signaling
Stegmann M, Monaghan J, Smakowska-Luzan E, Rovenich H, Lehner A, Holton N, Belkhadir Y, Zipfel C. (2017) Science Jan 20;355(6322):287-289.
Genetic code expansion for multiprotein complex engineering
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The nascent RNA binding complex SFiNX licenses piRNA-guided heterochromatin formation. Batki J, Schnabl J, Wang J, Handler D, Andreev VI, Stieger CE, Novatchkova M, Lampersberger L, Kauneckaite K, Xie W, Mechtler K, Patel DJ, Brennecke J. Nat Struct Mol Biol. 2019 Aug;26(8):720-731.
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Bacterial medium-chain 3-hydroxy fatty acid metabolites trigger immunity in Arabidopsis plants.
Kutschera A, Dawid C, Gisch N, Schmid C, Raasch L, Gerster T, Schäffer M, Smakowska-Luzan E, Belkhadir Y, Vlot AC, Chandler CE, Schellenberger R, Schwudke D, Ernst RK, Dorey S, Hückelhoven R, Hofmann T, Ranf S, Science. 2019 Apr 12;364(6436):178-181
Differential Action of Reelin on Oligomerization of ApoER2 and VLDL Receptor in HEK293 Cells Assessed by Time-Resolved Anisotropy and Fluorescence Lifetime Imaging Microscopy.
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Adaptation of the Staphylococcus aureus leukocidin LukGH for the rabbit host by protein engineering.
Trstenjak N, Stulik L, Rouha H, Zmajkovic J, Zerbs M, Nagy E, Badarau A, Biochem J. 2019 Jan 25;476(2):275-292
qEva-CRISPR: a method for quantitative evaluation of CRISPR/Cas-mediated genome editing in target and off-target sites.
Dabrowska M, Czubak K, Juzwa W, Krzyzosiak WJ, Olejniczak M, Kozlowski P, Nucleic Acids Res. 2018 Sep 28;46(17):e101.
Cellular N-myristoyltransferases play a crucial picornavirus genus-specific role in viral assembly, virion maturation, and infectivity.
Corbic Ramljak I, Stanger J, Real-Hohn A, Dreier D, Wimmer L, Redlberger-Fritz M, Fischl W, Klingel K, Mihovilovic MD, Blaas D, Kowalski H, PLoS Pathog. 2018 Aug 6;14(8):e1007203.
LHP1 Interacts with ATRX through Plant-Specific Domains at Specific Loci Targeted by PRC2.
Wang H, Jiang D, Axelsson E, Lorković ZJ, Montgomery S, Holec S, Pieters BJGE, Al Temimi AHK, Mecinović J, Berger F, Mol Plant. 2018 Aug 6;11(8):1038-1052.
Transcriptome Study of an Exophiala dermatitidis PKS1 Mutant on an ex Vivo Skin Model: Is Melanin Important for Infection?
Poyntner C, Mirastschijski U, Sterflinger K, Tafer H, Front Microbiol. 2018 Jul 3;9:1457.
Selective targeting of 3 repeat Tau with brain penetrating single chain antibodies for the treatment of neurodegenerative disorders.
Spencer B, Brüschweiler S, Sealey-Cardona M, Rockenstein E, Adame A, Florio J, Mante M, Trinh I, Rissman RA, Konrat R, Masliah E, Acta Neuropathol. 2018 Jul;136(1):69-87.
A Functional Study of AUXILIN-LIKE1 and 2, Two Putative Clathrin Uncoating Factors in Arabidopsis
Maciek Adamowski, Madhumitha Narasimhan, Urszula Kania, Matouš Glanc, Geert De Jaege and Jiří Friml. Plant Cell. 2018 Mar; 30(3): 700–716
Molecular basis for inner kinetochore configuration through RWD domain-peptide interactions
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DNA Cross-Bridging Shapes a Single Nucleus from a Set of Mitotic Chromosomes
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HuR small molecule inhibitor elicits differential effects in adenomatosis polyposis and colorectal carcinogenesis
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Root diffusion barrier control by a vasculature-derived peptide binding to the SGN3 receptor
Doblas VG, Smakowska-Luzan E, Fujita S, Alassimone J, Barberon M, Madalinski M, Belkhadir Y, Geldner N. (2017) Science Jan 20;355(6322):280-284.
Probing an Allosteric Pocket of CDK2 with Small Molecules
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A rapid method for detecting protein-nucleic acid interactions by protein induced fluorescence enhancement
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Cross-regulation by CrcZ RNA controls anoxic biofilm formation in Pseudomonas aeruginosa
Pusic P, Tata M, Wolfinger MT, Sonnleitner E, Häussler S, Bläsi U. (2016). Sci Rep. 6:39621
Linear ubiquitination by LUBEL has a role in Drosophila heat stress response
Asaoka T, Almagro J, Ehrhardt C, Tsai I, Schleiffer A, Deszcz L, Junttila S, Ringrose L, Mechtler K, Kavirayani A, Gyenesei A, Hofmann K, Duchek P, Rittinger K, Ikeda F. (2016). EMBO Rep. 17(11):1624-1640. Epub 2016 Oct 4.
Genomic screens identify a new phytobacterial microbe-associated molecular pattern and the cognate Arabidopsis receptor-like kinase that mediates its immune elicitation
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The Sodium Glucose Cotransporter SGLT1 is an Extremely Efficient Facilitator of Passive Water Transport
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Structure-Function Analysis of Heterodimer Formation, Oligomerization and Receptor Binding of the Staphylococcus aureus Bi-component Toxin LukGH
Badarau A, Rouha H, Malafa S, Logan DT, Håkansson M, Stulik L, Dolezilkova I, Teubenbacher A, Gross K, Maierhofer B, Weber S, Jägerhofer M, Hoffmann D, Nagy E. (2014). J Biol Chem epub2014 Nov 3.
Assembly Mechanism of Trypanosoma brucei BILBO1, a Multidomain Cytoskeletal Protein
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A strand-specific switch in noncoding transcription switches the function of a Polycomb/Trithorax response element
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The unique regulation of iron-sulfur cluster biogenesis in a Gram-positive bacterium
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Characterization and Structure of the Vaccinia Virus NF-kB Antangonist A46
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Flexible long-range loops in the VH gene region of the Igh locus facilitate the generation of a diverse antibody repertoire
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Sufficient amounts of functional HOP2/MND1 complex promote interhomolog DNA repair but are dispensable for intersister DNA repair during meiosis in Arabidopsis
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