Professor gÜlay Özcengİz

Middle East Technical University,
Department of Biological Sciences,
06800 Ankara/TURKEY

Office Room: 225
Tel: + 90 312 210 5170
Fax: + 90 312 210 7976



  • June, 1980   : B. Sc. Degree: Biology Department,
    Hacettepe University, Ankara

  • October, 1983  : M.Sc. Degree: Biology Department,
    M.E.T.U., Ankara

  • June, 1989   : Ph.D. Degree: Biology Department,

  • October, 1991 : Associate Professor in Microbiology

  • July, 1997 : Professor in Molecular Biology

Research Interest

Molecular Microbiology and Genetics,

Present research activities:

  • Proteomics of Bacillus subtilis  to further analyse the role of dipeptide antibiotic biosynthesis in quorum sensing.
  • Proteome dynamics of heavy metal stress response in Phanerochaete chrysosporium.
  • Proteomics and immunoproteomics of  Bordetella pertussis
  • Development of DNA and subunit vaccines against pasteurollosis.
  • Pathway engineering to improve clavulinic acid  and cephamycin C biosynthesis in Streptomyces clavuligerus.
  • Treanscriptional regulation of cephamycin C biosynthetic gene cluster.

Selected Publications:

  • Yılmaz Ç., Özcengiz G. (2016). Antibiotics: pharmacokinetics, toxicity, resistance and multidrug efflux pumps. Biochemical Pharmacology.
  • Yılmaz, Ç., Apak, A., Özcengiz, E., & Özcengiz, G. (2016). Immunogenicity and protective efficacy of recombinant iron superoxide dismutase protein from Bordetella pertussis in mice models. Microbiology and Immunology, 60(11), 717-724.

  • Ünsaldı, Eser, et al. "Proteome-wide alterations in an industrial clavulanic acid producing strain of Streptomyces clavuligerus." Synthetic and Systems Biotechnology (2016).

  • Özcengiz, G., & Öğülür, İ. (2015). Biochemistry, genetics and regulation of bacilysin biosynthesis and its significance more than an antibiotic. New biotechnology, 32(6), 612-619.

  • Barredo, J. L., Ozcengiz, G., & Demain, A. L. (2014). Advances in Beta-Lactam Antibiotics. In Antimicrobial Compounds (pp. 115-147). Springer Berlin Heidelberg.

  • Ozcengiz, G., & Demain, A. L. (2013). Recent advances in the biosynthesis of penicillins, cephalosporins and clavams and its regulation. Biotechnology advances, 31(2), 287-311.

  • Köroğlu, T.E., Öğülür, İ., Mutlu, S., Yazgan-Karataş, A. and Özcengiz, G. 2011. Global Regulatory Systems Operating in Bacilysin Biosynthesis in Bacillus subtilis. Journal of Molecular Microbiology and Biotechnology. 20:144-155.

  • Tefon, B.E., Kühnel, S., Özcengiz, E., Becher, D., Hecker, M. and Özcengiz, G. 2011. A comprehensive analysis of Bordetella pertussis surface proteome and identification of new immunogenic proteins. Vaccine. 29: 3583-3595.

  • Yıldırım V., Özcan, S., Becher, D., Buettner, K., Hecker, M., and Özcengiz, G. 2011. Characterization of proteome alterations in Phanerochaete chrysosporium in response to lead exposure. BMC Proteome Science. 9: 12-27.

  • Özcan, O., İçgen, B. and Özcengiz, G. 2010. Pretreatment of poultry litter improves Bacillus thuringiensis-based biopesticides production. Bioresource Technology. 101 (7): 2401-2404

  • Özcengiz, G., Okay, S., Ünsaldı, E., Taşkın, B., Liras, P., Piret, J. 2010. Homologous expression of aspartokinase (ask) gene in Streptomyces clavuligerus and its hom-deleted mutant:Effects on cephamycin C production. Bioengineered Bugs. 1 (3): 1-7.

  • Altındis, E., Tefon, B.E, Yıldırım, V. Özcengiz, E., Becher, D., Hecker, M. and Özcengiz, G. 2009. Immunoproteomic analysis of Bordetella pertussis and identification of new immunogenic proteins. Vaccine. 27: 542-548.

  • Yılmaz, E. İ., Çaydaşı, A. K. and Özcengiz, G. 2008. Targeted disruption of homoserine dehydrogenase gene and its effect on cephamycin C production in Streptomyces clavuligerus. Journal of Industrial Microbiology and Biotechnology. 35: 1-7. 

  • Okay, S. Tefon, B., Özkan, M. and Özcengiz, G. 2008. Expression of chitinase A (chiA) gene from a local isolate of Serratia marcescens in Coleoptera-specific Bacillus thuringiensis. Journal of Applied Microbiology. 104: 161-170. 

  • Özcan, S., Yıldırım, V., Kaya, L., Albrecht, D., Becher, D., Hecker, M., and Özcengiz, G. Phanerochaete chrysosporium soluble proteome as a prelude for the analysis of heavy metal response. Proteomics.  2007. 7:1249-1260.

  • Özcan, B., Özcengiz, G., Arzu Coleri, A., and Çökmüş, C. Diversity of Halophilic Archaea From Six Hypersaline Environments in Turkey. Journal of Microbiology and Biotechnology. In press.

  • Akçelik, O., Tükel, Ç., Özcengiz, G. and Akçelik, M. 2006. Characterization of bacteriocins from two Lactococcus lactis subsp. lactis isolates. Molecular Nutrition and and Food Research. 50: 306-313.

  • Tokcaer, Z., Bayraktar, E., Mehmetoğlu, Ü., Özcengiz, G and Alaeddinoğlu, N.G. 2006. Response surface optimization of antidipteran delta-endotoxin production by Bacillus thuringiensis subsp. israelensis HD 500. Process Biochemistry. 41:350-355.

  • Kurt, A., Özkan, M., Sezen, K., Demirbağ, Z., and Özcengiz, G. 2005. Cry3Aa11: a new rank of Cry3Aa d-endotoxin from a local isolate of Bacillus thuringiensis. Biotechnology Letters. 27: 1117-1121.

  • Kurt, A., Özkan, M. and Özcengiz, G. 2005. Inorganic phosphate has a crucial effect on Cry3Aa delta-endotoxin production. Letters in Applied Microbiology. 41: 303-308.

  • Özkan, M., Yılmaz, E. İ., Lynd, L. R. and Özcengiz, G. 2004. Cloning and expression of Clostridium thermocellum L-lactate dehydrogenase gene in Escherichia coli and enzyme characterization. Canadian Journal of Microbiology. 50: 845-851.

  • Tunca, S., Yılmaz, E. I., Piret, J., Liras, P. and Özcengiz, G. 2004. Cloning, characterization and heterologous expression of the aspartokinase and aspartate semialdehyde dehydrogenase genes of cephamycin C-producer Streptomyces clavuligerus. Research in Microbiology. 155: 525-534.

  • Tüzün, I., Karataş A. Y., Şeşenoğlu, Ö., Demir, A. S. and Özcengiz, G. 2003. 2-Amino-N-(2-furylmethyl)propanamide as a novel alanylglycine equivalent synthesized by bacilysin synthetase. Enzyme and Microbial Technology 33: 725-728.

  • Karataş, A., Çetin, S. and Özcengiz, G. 2003. The effects of insertional mutations in comQ, srfa, spoOH, spoOA and abrB genes on bacilysin biosynthesis in Bacillus subtilis. Biochimica et Biophysica Acta-Gene Structure and Expression. 1626 (1-3): 51-56.

  • Graduate program affiliation: Biology, Biotechnology, Biochemistry



    • Gülay Özcengiz