Past Members

Congratulations to Kevin on his new position!

After his successful Ph.D. thesis defence, Dr. Kevin Mehr is now Director of Research and Development at Segra Biogenesis Corporation.

Congratulations to Dr. Thisbe K. Lindhorst

Congratulations to Dr. Thisbe K. Lindhorst,
University of Kiel and a former postdoctoral fellow in the Withers Lab (1992-93), who was elected to a two year term as the new president of the German Chemical Society (Gesellschaft Deutscher Chemiker: GDCh), starting in January 2016. Her research interests concern the biological chemistry of carbohydrates, glycoconjugates and peptides.

Congratulations! Xiaohua on becoming Dr. Zhang!

Xiaohua successfully defended her Ph.D. thesis “Binding of Substrates and Inhibitors to Human Pancreatic Alpha Amylase” and became Dr. Zhang!

Congratulations! Withers lab trainees land faculty positions!

Dr. Jin Hyo Kim is now an Assistant Professor at Gyeongsang National University in South Korea
Dr. David Kwan is now an Assistant Professor in the Biology Department at Concordia University in Montreal.
  Dr. Ching-Ching Yu is now an Assistant Professor in the Department of Chemistry and Biochemistry at National Chung-Cheng University in Taiwan
  Dr. Seino Jongkees has accepted a position in the Department of Chemistry at Utrecht University, Holland.
  Dr. Tom Wennekes has also accepted a position in the Department of Chemistry at Utrecht University, Holland.
  Dr. Chris Phenix has accepted a position in the Department of Chemistry at the University of Saskatchewan.





Position and research in our labPosition at WithLabCurrentlyCurrent Contact
Andrés Gonzalez SantanaResearch Associate, Institute of General Organic Chemistry, Madridaglez(at)
Andrew JeongUndergraduate Student 2019ajeong(at)
Anna Win-MasonPostdoctoral Fellow 2013-2014 Program Officer, Marsden Bay, NZ
Brenda LougheedM.Sc. 1995-1998
Ching-Ching YuPostdoctoral Fellow 2014-2015; Visiting Ph.D. 2011-2012Assistant Professor, Department of Chemistry and Biochemistry, National Chung Cheng University, Taiwancheccyu(at)
Christina TysoePh.D., 2014-2018Postdoctoral Fellow, Penn State Univ, Bollinger Labchristina.tysoe(at)
Curtis BraunPh.D. 1990-1995
Daisy DicksonVisiting Graduate Student 2016Undergrad(M.Chem), University of Southamptondaisy-dickinson10(at)
Daria LevitskayaVisiting Graduate Student 2017M.Sc. Biochemistry, Ludwig Maximilian University of Munichdaria.levitskaya(at)
David KwanPostdocoral Fellow 2010-2015Assistant Professor, Department of Biology, Concordia University, Quebec, Canadadavid.kwan(at)
David PercivalPh.D. 1983-1988 Senior Investigator, Merck Frost, Canada (2009-present); Formerly Senior Research Biochemist, 1989-2009
Donald TrimburPostdoctoal Fellow 1990-1991Senior Director of Development, Solazyme (2007-present); Formerly Head, Protein Science Research Group, Genencor
Ellen LaiPh.D. 1987-1994
Emily KwanResearch Assistant/Tech 5
Fiona MacCraePostdoctoral Fellow 1990-1991
Fred ToVisiting B.Sc. 2013 B.Sc. Student, McMaster University, Ontario, Canada
Friedemann FluggeVisiting M.Sc. 2013 M.Sc. Student, University of Lubeck, Germany
Gaetan CaronM.Sc. 1983-1987
Georg KrügerJoint Student of S Withers with Univ of Greifswald, M.Sc. 2016Ph.D. candidate at Leibniz Universität Hannovergeorg_krueger(at)
Guangyu YangPostdoctoral Fellow 2012-2013 Assistant Professor, Shanghai Jiao Tong University
Imke LemmerVisiting M.Sc. 2018-1019imkelemmer(at)
Isabel Luvalle-BurkeUndergraduate Student 2015-2016Res Tech, CDRD, UBCiluvalleburke(at)
Jenelle BackerResearch TechNanosciences, Burnaby, BCjenelle.backer(at)
John GeblerPostdoctoral Fellow 1990-1991Director, Biopharmaceutical Sciences, Waters Corporation
John HansonVisiting Fellow 2017Professor, Chemistry, Puget Sound Univeristyhanson(at)
John McCarterPh.D. 1991-1995
Jordan EdwardsUndergraduate Student 2017Undergrad, UBCedwardsjordanc(at)
Julia DallmannVisiting Undergraduate Student 2018Undergrad (Mol Biol), Westfalische Hochschule, Germanyj.t.dallmann(at)
Kah-Yee LiVisiting Ph.D. 2012-2013 Ph.D. Student, University of Leiden
Katharina OstmannVisiting M.Sc. 2018-1019katharina.ostmann(at)
Kevin MehrPh.D. StudentR&D Director, Segra Biogenesis Corporationkevinmehr(at)
Kieran HudsonPostdoctoral Fellow, 2016-2018Postdoctoral Fellow – Search and Evaluation, CDRDkhudson(at)
Lars BaumannPostdoctoal Fellow 2013-2016Research Associate, Universität Leipziglbaumann(at)
Laszlo KissVisiting Scientist 1990-1991
Leise BervenM.Sc. 1983-1987
Leo BetschartPostdoctoral Fellow 2017-2018Scientific Information Consultant, ETHZleo.betschart(at)
Lincoln XiaoUndergraduate Student 2018lincolnxiao3(at)
Lucas KarstVisiting M.Sc. 2013-2014 M.Sc. Student, University of Bayreuth, Germany
Manuel NietoVisiting Graduate Student 2015Ph.D. candidate at Centro de Investigaciones Biológicas, Madridmanunieto(at)
Manuel SchererPostdoctoral Fellow 2017-2019
Mark NamchukPh.D. 1988-1993 Vice President Research, Vertex (Cambridge, MA)
Markus BlaukopfPostdoctoral Fellow 2013-2015Universität für Bodenkultur Wienmarkus.blaukopf(at)
Martin FascionePostdoctoral Fellow 2012-2013 Assistant Professor (Lecturer), University of York
Martina ChambersM.Sc. 2011-2014 Research Associate, STEMCELL Technologies, Canada
Mathilde JegoVisiting Student 2015M.Sc Student, Université Rennes 1mathildejego8(at)
Maurits KohsiekVisiting Graduate Student 2016Associate Scientist,Leiden University, Netherlandsmaurits.kohsiek(at)
Michael FischerPostdoctoral Fellow 2012-2014 Group Leader at Sandoz, Austria
Michael KornerPostdoctoral Fellow 1992-1993
Miriam KötzlerPostdoctoral Fellow 2013-2017koetzler(at)
Mirko ZierkePostdoctoral Fellow 2014-2017Project Leader, Merck, Schaffhausen, Switzerland
Natalia PerrellaVisiting Graduate Student 2016Ph.D. candidate, Butantan Institute/ Universidade de São Paulonatalianappi87(at)
Paul BirdPostdoctoral Fellow 1984-1987
Renee MosiPh.D. 1994-1998Project Manager; Formerly with Anormed, B.C.
Sabrina ErnstVisiting M.Sc. 2014 M.Sc. Student, RWTH Aachen University, Germany
Sherry LawsonPh.D. 1991-1996
Shichang MiaoPostdoctoral Fellow 1992-1994
Stefan WeckPostdoctoral Fellow 2012-2014 Chemist at Uetikon, Germany
Steve HowardPostdoctoral Fellow 1995-1997 Senior Research Associate, Medicinal Chemistry, Astex Therapeutics, Cambridge, UK (2002-present); Formerly with GlaxoSmithKline
Tanya DuoM.Sc. 2010-2013  Research Associate, Gilead Sciences, Canada
Tara HillM.Sc. 2005-2009
Tara HillResearcher 2009-2014
Thomas HarveyPostdoctoral Fellow 1996-1997
Tina RasmussenPostdoctoral Fellow 2012-2014 Chemist at Novo Nordisk
Tony DayM.Sc. 1982-1985
Tracy HinderB.Sc. 2013-2014
Vitto FerroPostdoctoral Fellow 1994-1996 Director of Drug Discovery, Progen Pharmaceuticals Ltd. (Brisbane, Australia)
Warren WakarchukPostdoctoral Fellow 1990-1992Professor, Department of Chemistry & Biology, Ryerson University; Formely Principal Research Officer, National Research Council of CanadaRyerson Directory
Xiaohua ZhangPh.D. 2009-2016Postdoc, Concordia Universitydaisyazi(at)
Yuan YaoM.Sc. 2009-2013  Seeking position
Zach ArmstrongPh.D. 2013-2018Postdoctoral Research Associate, Dept of Chemistry, University of York, UKzach_armstrong(at)
Zhizeng GaoPostdoctoral Fellow, 2013-2018Associate Professor, Sun Yat-sen University, Guangdong, Chinagaozhizeng(at)