Ulaş Tezel

Vice Director of IESc
+90 212 359 4604
Interest Areas: 

Biotransformation of organic chemicals by bacteria

Chemical and genetic mechanisms of biotransformation reactions

Role of phage lysogeny in biotransformation of organic chemicals

Biotechnology and bioprocessing for the treatment of industrial and municipal waste streams, production of energy and synthesis of fuels and chemicals

Microbial ecology and process microbiology

Occurrence, fate and toxicity of organic contaminants in water, soil and sediment


Ph. D., School of Civil and Environmental Engineering, Georgia Institute of Technology, USA, 2009

M.S., Environmental Engineering Department, Middle East Technical University, TR, 2003

B.S., Environmental Engineering Department, Middle East Technical University, TR, 2001

Academic Career: 

Assistant Professor, Institute of Environmental Sciences, Bogazici University, Istanbul, 2012 - Present

Researcher under the E.U. Research Executive Agency Contract, Institute of Environmental Sciences, Bogazici University, Istanbul, 2011-2012


Recent Projects: 
  1. European Research Executive Agency  FP7-PEOPLE-Marie Curie-Career Integration Grant “Role of biotransformation on the dynamics of antimicrobial resistance” (P. I.: U. Tezel), 2011-2015.
  2. The Scientific and Technological Research Council of Turkey “Development of enzyme bioreactors for the advanced treatment of wastewater containing antimicrobial chemicals” (P.I.: Ulas Tezel), 2014-2017.
  3. The Scientific and Technological Research Council of Turkey “Development of a geographical information systems based decision-making tool for water quality management of Ergene watershed using pollutant fingerprints” (P.I.: Ulas Tezel), 2016-2019.
  4. Ministry of Science, Industry and Technology & Directorate General for EU and Foreign Affairs Department of EU Financial Programmes, Competitiveness and Innovation Sector Operational Programme (CISOP) “Integrated Biorefinery Concept for Bioeconomy Driven Development (INDEPENDENT)”, (Award ID: EuropeAid/140111/IH/SUP/TR) (P.I.: Berat Z. Haznedaroglu, co-PI: Ulas Tezel) 2019-2022.
  5. Bogazici University Scientific Research Projects Fund “Complete genome sequencing and annotation of Pseudomonas sp. BIOMIG1” (P.I.: Ulas Tezel), 2019-2020.
Selected Publications: 
  1. Ertekin E., Hatt J. K., Konstantinidis K. T. and Tezel U. 2016. Similar microbial consortia and genes are involved in the biodegradation of benzalkonium chlorides in different environments, Environmental Science and Technology 50: 4304-4313.
  2. Ertekin E., Konstantinidis K. T. and Tezel U. 2017. A Rieske-type oxygenase of Pseudomonas sp. BIOMIG1 converts benzalkonium chlorides to benzyldimethyl amine, Environmental Science and Technology 51: 175-181. (cover page of ES&T)
  3. Kim M., Weigand M. R., Oh S., Hatt J. K., Krishnan R., Tezel U., Pavlostathis S. G., and Konstantinidis K. T. 2018. Widely used benzalkonium chloride disinfectants can promote antibiotic resistance, Applied and Environmental Microbiology 84:e01201-18.
  4. Akay C., and Tezel U. 2020. Biotransformation of acetaminophen by intact cells and crude enzymes of bacteria: A comparative study and modelling, Science of the Total Environment 703: 1-11.
  5. Altinbag R.C., Ertekin E. and Tezel U. 2020. Complete genome sequence of Pseudomonas sp. BIOMIG1 phenotype that mineralizes benzalkonium chloride disinfectants, Microbiology Resource Announcements, (doi: 10.1128/MRA.00309-20).