CHRISTIAN TAGWERKER, PH.D.
acgbkh@r.postjobfree.com
San Diego, CA 92121
SCIENTIST / BIOTECHNOLOGIST
Research scientist with more than 11 years of experience and expertise in
biotechnology, both domestically and internationally. Further expertise:
microbial physiology, cloning technology, proteomics, genomics, synthetic
biology, biofuels and biopolymers, molecular biology assays and analysis.
Demonstrated success in DNA synthesis, test methods development, prototype
design and development. Proven ability in laboratory set-up. Recognized for
identifying critical issues and implementing effective solutions. Excellent
communicator as indicated by breakthrough experiments yielding highly
accessed publications in peer-reviewed journals. Core competencies include:
. Sequencing/Cloning/Synthesizing
. Conduct/Design Experiments
. Bench Production/Scale-ups
. Test Methods Development /Assays
. Prototype/Process Design/Building
. Protocol improvement/Protocol writing
. Research Publications
. Understand/Express/Interpret Complex Scientific Information
. Examine/Data/Objects
. Lab Set-up
. Training/Coaching
. HPLC/GC/GPC/MS
. Reagent manufacturing/Working knowledge of GMP, ISO, and FDA
regulations
EDUCATION
Ph.D. in Microbiology, Major: Biochemistry, LFU Innsbruck (Leopold Franzens
University, Innsbruck) in collaboration as Visiting Scholar with UC Irvine,
CA
M.Sc. in Microbiology with Honors, Major: Biochemistry, LFU Innsbruck
First Diploma in Medicine, and. med. LFU Innsbruck
PROFESSIONAL EXPERIENCE
University of Basel, Department of Anorganic Chemistry, Basel, Switzerland
2013 - Present
POSTDOCTORAL RESEARCHER - HEAD OF BIOLOGY LAB
Reporting directly to Head of Department, Professor Thomas R. Ward
. Biological applications of artificial metalloenzymes: metabolic
engineering of E. coli and Yeast, (S. cerevisiae, Pichia), combined
with Streptavidin/Biotin-catalysts for chemical engineering: e.g. in
vitro and in vivo (cytoplasm/periplasm) metathesis, C-H activation,
imine reduction and hydrogen production.
. Defining project work plans, conducted independent research to meet
protein (e.g. streptavidin) and chemical (e.g. formate/hydrogen)
production standards.
. Large scale biofermentations, scale-up to 20 liters from lab bench
volumes
. High-throughput saturated mutagenesis (HTS) library construction and
screening.
. Routine BSL1 (Bio Safety Level 1) Lab maintenance, Biosafety and
Training, Publication reviews.
. Supervision of 2-3 research technicians and advising undergraduate to
masters students throughout the academic year.
. Presented regular updates for research groups on current and past
literature/publications, organized weekly group meetings for 20+
Thomas Ward group members.
J. Craig Venter Institute, Synthetic Biology and Bioenergy Group, La Jolla,
CA 2008 - 2012
POSTDOCTORAL FELLOW - Reporting directly to Scientific Director and Nobel
Prize laureate Hamilton O. Smith and Distinguished Professor Clyde A.
Hutchison IIIrd
. Analysis of large DNA sequence data sets from Illumina and 454/Roche
platforms of bacterial and eukaryotic genomes.
. Transplantation of bacterial genomes from one species to another
(Mycoplasma) - setup and maintenance of BSL2 (Bio Safety Level 2)
laboratory.
. Cloning and cultivation of Diatoms and Cyanobacteria with Microbial
and Environmental Genomics group headed by Ken Nealson and Andy Allen.
. Interaction with various departments within J. Craig Venter Institute
- Proteomics and Sequencing facilities, PFGRC (infectious disease
department), Plant Genomics, Genomic Medicine, Synthetic Genomics Inc
(SGI).
. Cloning of intact bacterial genomes in yeast, S. cerevisiae -
independently pioneered cloning of an intact cyanobacterial genome
(>1.7 Mbases) in yeast, which utilizes the standard genetic code,
establishing an important basis for algae cloning platforms in yeast.
. Regular research progress reports (3 meetings/teleconferences per
week) with group directors and interdisciplinary team of scientists at
east coast headquarters, Maryland.
. Presentations at scientific conferences and publications in peer-
reviewed journals.
. Kept concise laboratory notebooks/protocols (requirement to be signed
and approved by senior researcher, scanned and submitted in a timely
manner).
. Regular BSL2 lab Laboratory Safety Training, Injury Illness Prevention
Program Training, Fire Safety Training.
. Supervision of interns, research associates, new employees, recruiting
and annual personnel performance appraisals of existing employees.
Department of Physiology and Biophysics, UC Irvine, Irvine, CA 2007
- 2008
POSTDOCTORAL RESEARCH ASSOCIATE - Reporting to Professor Lan Huang
. Extension of tandem affinity protein and protein complex purification
procedures.
. Routine mass spectrometry, sample preparation and analysis, MS data
analysis.
. Implementation of in vivo protein cross-linking reagents for
purification of complex protein mixtures and studying cross-linking
reagent fragmentation behavior.
. Maintenance and use of QSTAR XL (Applied Biosystems), SQ-D2 (Waters)
and Orbitrap (Thermo Scientific) instruments.
Vienna Biocenter, Vienna, Austria
2007
POSTDOCTORAL FELLOW - Reporting to Professor Gustav Ammerer
. Yeast genetics and cloning
. Studied yeast systems biology aspects with a focus on cell signaling.
Department of Biological Chemistry, School of Medicine, UC Irvine, Irvine,
CA 2002 - 2006
GRADUATE RESEARCH ASSOCIATE - Reporting to Professor Peter Kaiser
. Filed disclosure and record of invention at Office of Technology
Transfer, UC Irvine, case no. 2005-046-1 - first step toward patent
applications.
. In vitro synthetic assembly and cloning of a codon-optimized tandem
affinity tag (HB-tag) for protein purification under strong denaturing
conditions and assessment in S. cerevisiae to study complex
ubiquitination and sumoylation profiles.
. Independently pioneered and optimized an on-bead/resin digestion
protocol for optimal peptide generation for subsequent MS (mass
spectrometry) analysis.
. Improved offline fractionation and desalting of peptide samples for
LC/LC MS/MS.
. Construction of HB-tag module plasmid library for rapid PCR-based gene-
tagging in S. cerevisiae.
. Adaptation of the HB-tag method to mammalian cells, mammalian cell
line culturing, transfection, DNA/RNA/Protein extraction.
. Combination of the HB-tag procedure with SILAC (stable isotope
labeling of amino acids in cell culture), with or without in vivo
cross-linking reagents
. Identification and publication of novel in vivo ubiquitin chain
linkages and ubiquitination sites in S. cerevisiae.
Pharmaceutical Factory MONTAVIT GmbH before 2002
QUALITY CONTROL ASSISTANT
. Manufacturing processes of prescription medicines for respiratory
infections, urinary incontinence and motion sickness.
http://www.montavit.com/en/areas-of-therapy
. FDA Registration Number: 9680814, GMP-certified facility, ISO
9001:2008, ISO 13485:2007.
RESEARCH SKILLS
Genetic tools: Primer design, PCR, qPCR, Multiplex, DNA Isolation,
Purification, Transformation, Plasmid Construction, Gel Electrophoresis,
Southern blotting, Pulsed-Field Gel Electrophoresis (CHEF/FIGE) systems,
CsCl gradient ultracentrifugation, Flexstation3. RNA isolation and
analysis, Northern blotting. Cloning of whole bacterial genomes into S.
cerevisiae. Transplantation of whole genomes from one species to another
(i.e. Mycoplasma mycoides LC to M. capricolum). Next generation sequencing
platforms: Illumina and 454/Roche, sequencing and analysis.
Cell Culture: Biofermentations up to 20 liters (E. coli, Yeast). Mammalian
cells, transient transfection in common mammalian cell lines (HeLa),
microinjection, DNA/RNA/Protein extraction. Cyanobacterial culture methods,
specifically Prochlorococcus and Synechococcus. Eukaryotic algae culturing
techniques: Phaeodactylum tricornutum, Pavlova, Nannochloropsis sp. High-
throughput screening (HTS) of E.coli library clones in 96-well format
(saturated mutagenesis analysis). Cryopreservation. Flow cytometry (FACS).
Proteomics: Protein purifications, enzyme/protein activity assays (ELISA,
reporter assays), 1-D/2-D SDS-PAGE, Western Blotting, affinity
chromatography (UPLC, HPLC - GE-AKTA, Waters systems). Mass Spectrometry -
sample preparation (in-gel digests, desalting), experience with MALDI, ESI
sources, QSTAR XL (Applied Biosystems), SQ-D2 (Waters) and Orbitrap (Thermo
Scientific) instruments.
Microscopy, Fluorescence microscopy - imaging with Molecular Probes in
E.coli, Yeast and eukaryotic algae.
Bioinformatics (CLC Genomics Workbench, UNIX scripting, PERL basics,
MATLAB, ProteinProspector, Mascot, Analyst, Xcalibur, BioWorks, Igor,
Unicorn, Sequin, DNA Strider, pDraw32, Cytoscape, GOnet, GeneBank/Entrez,
ChemSketch, MDL ISIS Draw, SoftWare Pro).
General Computer Skills for Mac/PC (Illustrator, Word, OpenOffice, Excel,
Power-Point, Outlook, Lotus, Photoshop, SmartDraw, Corel, Browsers,
EndNote, Mendeley)
PROFESSIONAL ACHIEVEMENTS
Accepted request to join an inorganic chemistry lab at University of Basel
to promote biological applications of artificial metalloenzymes. Performed
metabolic engineering of E.coli combined with Streptavidin/Biotin-catalysts
and high-throughput screening (HTS) of clones in 96-well plate formats
(saturated mutagenesis). Results: Important initial steps for hydrogen
overproduction.
Identified the urgent requirement for cloning and manipulating intractable,
photosynthetic bacteria at a non-profit research institute. Pioneered the
first cloning of an intact cyanobacterial genome using the standard genetic
code, enabling stable cloning platforms in yeast for algae. Results:
Significant scientific breakthrough; important milestone to be met for the
J. Craig Venter Institute, Synthetic Biology and Bioenergy group funding.
Participated in learning a complex genome transplantation procedure,
developed and routinely managed at the headquarters of a research
institute. Launched the necessary actions for a biosafety lab (BSL level 2)
implementation at a new company location. Results: New work items and media
were ordered and transplant clones were obtained in a few weeks.
Maintained state of the art practices in culturing microorganisms from
bacteria, yeast and sensitive photosynthetic organisms. Carried out
required monitoring and sequence analysis by DNA extractions, Results:
Breakthrough experiments yielding highly accessed publications in peer-
reviewed journals.
Focused on protein-protein interactions and modifications during graduate
work. Pursued various cloning strategies in budding yeast combined with
early DNA assembly methods; initiated combined efforts of a yeast genetics
lab and a mass spectrometry group. Results: Protein tagging systems and
protein identification methods fostered important new insights related to
human cancers and disease.
Presented complex data in 25-minute talks during the academic year and at
annual departmental retreats for the Biological Chemistry division at UC
Irvine. Summarized and designed a presentation based on large data sets
from experiments for the entire department. Results: Received an
"Outstanding Graduate Student Presentation Award" at the Lake Arrowhead
retreat, UCLA Conference Center.
Published methods for cloning bacterial genomes in yeast in open access
journals. Selected as invited speaker at BIT's 4th World Genome and DNA Day
Conference, Nanjing, China; contributed a presentation summarizing new
research data from research group. Results: Received great feedback from
attendees; compliments from Senior Scientist at New England Biolabs (NEB),
quote: "an excellent talk".
Acknowledged various ethnicities, cultures and ideologies collaborating at
academic research institutes. Attended a rigorous schedule of 3 group
meetings per week and brought about questions and issues beyond technical
and scientific matters from colleagues. Results: Often personal and inter-
personal conflicts between different members of the team were resolved and
led to a more cohesive unit.
Employed at Pharmaceutical Factory Montavit, GmbH as direct employee. FDA
Registration Number: 9680814, GMP-certified, ISO 9001:2008, ISO 13485:2007.
Results: Acquired knowledge in GMP and ISO regulations and reagent
manufacturing processes.
Awarded:
. Pre-doctoral 2-year 'DOC'-Fellowship of the Austrian Academy of
Sciences
. Outstanding Graduate Student Presentation Award, UCLA Conference
Center
Affiliated with: ASMS, HUPO, ASCINA
PUBLICATIONS
Karas, B.J., Molparia, B., Jablanovic, J., Hermann, W.J., Lin, Y-C.,
Dupont, C.L., Tagwerker, C., Yonemoto, I.T., Noskov, V.N., Chuang, R-
Y., Allen, A.E., Glass, J.I., Hutchison, C.A. III., Smith, H.O.,
Venter, J.C., Weyman, P.D. Assembly of eukaryotic algal chromosomes in
yeast. Journal of Biological Engineering 7 (1), 1-12 (2013).
Tagwerker, C., Dupont, C.L., Karas, B.J., Ma, L., Chuang, R-Y., Benders,
G.A., Ramon, A., Novotny, M., Montague, M.G., Venepally, P., Brami,
D., Schwartz, A., Andrews-Pfannkoch, C., Gibson, D.G., Glass, J.I.,
Smith, H.O., Venter, J.C., Hutchison, C.A. III. Sequence analysis of a
complete 1.66 Mb Prochlorococcus marinus MED4 genome cloned in yeast.
Nucleic acids research 41, 1-9 (2012).
Karas, B.J., Tagwerker, C., Yonemoto, I.T., Hutchison III, C.A. & Smith,
H.O. Cloning the Acholeplasma laidlawii PG-8A Genome in Saccharomyces
cerevisiae as a Yeast Centromeric Plasmid. ACS Synthetic Biology 1, 22-
28 (2012)
Guerrero, C., Tagwerker, C., Kaiser, P. & Huang, L. An integrated mass
spectrometry-based proteomic approach: quantitative analysis of tandem
affinity-purified in vivo cross-linked protein complexes (QTAX) to
decipher the 26 S proteasome-interacting network. Molecular & cellular
proteomics : MCP 5, 366-78 (2006).
Tagwerker, C., Zhang, H., Wang, X., Larsen, L., Lathrop, R.H., Hatfield,
G.W., Auer, B., Huang, L. and Kaiser, P. HB-tag Modules for PCR-based
Gene tagging and tandem affinity purification in Saccharomyces
cerevisiae. Yeast 23, 623-32 (2006)
Tagwerker, C., Flick, K., Cui, M., Guerrero, C., Dou, Y., Auer, B., Baldi,
P., Huang, L. and Kaiser, P. A tandem-affinity tag for two-step
purification under fully denaturing conditions: Application in
ubiquitin profiling and protein complex identification combined with
in vivo cross-linking. Molecular & cellular proteomics : MCP 5, 737-48
(2006).
Kaiser, P., Tagwerker, C. (2005). Is this protein ubiquitinated? Methods
Enzymol. 399:243-8.
Volunteer Work includes: Basketball-Coach for TI/DSG-Club; Tyrolean
Basketball Association (TBV), Innsbruck and Tyrol; Team-Manager of the
Herren-Landesliga TI/DSG-Club Basketball-Team (Senior League), Innsbruck,
Austria
Speaks English (fluent), German (fluent), French
Professional References Available Upon Establishment of Mutual Interest