2022

• Kurt-Kızıldoğan, A.,  Çelik, G.,  Ünsaldı, E., Özcan, S., Ayaz-Güner, Ş. and Özcengiz, G. 2022. An integrative-omics analysis of an industrial clavulanic acid-producing Streptomyces clavuligerus. Applied Microbiology and Technology, 106(18): 6139-6156. 
  
• Kutnu, M., Tekin-İşlerel, E., Tunçbağ, N. and Özcengiz, G. 2022. Comparative Biological Network Analysis for Differentially Expressed Proteins as a Function of Bacilysin Biosynthesis in Bacillus subtilis. Integrative Biology, 14(5), 99–110.

2020

• Ertekin, O., Kutnu, M., Taşkin, A. A., Demir, M., Karataş, A. Y., and Özcengiz, G. 2020. Analysis of a bac operon-silenced strain suggests pleiotropic effects of bacilysin in Bacillus subtilis. Journal of Microbiology, 58(4), 297–313.
• Okay, S., Yildirim, V., Büttner, K., Becher, D., and Özcengiz, G. 2020. Dynamic proteomic analysis of Phanerochaete chrysosporium under copper stress. Ecotoxicology and Environmental Safety, 198, 110694.
• Eran, Z., Akçelik, M., Yazıcı, B. C., Özcengiz, G., and Akçelik, N. 2020. Regulation of biofilm formation by marT in Salmonella typhimurium. Molecular Biology Reports, 47(7), 5041–5050.
• Ünsaldı, E., Kurt-Kızıldoğan, A., Özcan, S., Becher, D., Voigt, B., Aktaş, C., and Özcengiz, G. 2020. Proteomic Analysis of a hom-disrupted, Cephamycin C Overproducing Streptomyces clavuligerus. Protein & Peptide Letters, 27(2).

2018

• Yılmaz, Ç., Özcengiz, E. and Özcengiz, G. 2018. Recombinant outer membrane protein Q and putative lipoprotein from Bordetella pertussis inducing strong humoral response were not protective alone in the murine lung colonization model. Turkish Journal of Biology. 42 (2): 123-131.

2017

• Ünsaldı, E., Kurt-Kızıldoğan, A., Voigt, B., Becher, D. and Özcengiz, G. 2017. Proteome-wide alterations in an industrial clavulanic acid producing strain of Streptomyces clavuligerus. Synthetic and Systems Biotechnology. 2: 39-48.
• Yılmaz, Ç. and Özcengiz, G. 2017. Antibiotics: Pharmacokinetics, toxicity, resistance and multidrug efflux pumps. Biochemical Pharmacology. 133: 43-62.
• Kurt-Kızıldoğan, A., Vanlı-Jaccard G., Mutlu A., Sertdemir İ. and Özcengiz, G. 2017. Genetic engineering of an industrial strain of Streptomyces clavuligerus for further enhancement of clavulanic acid production. Turkish Journal of Biology. 41: 342-353.

2016

• Yılmaz, Ç., Apak, A., Özcengiz, E. and Özcengiz, G. 2016. Immunogenicity and protective efficacy of recombinant iron superoxide dismutase protein from Bordetella pertussis in mice models. Microbiology and Immunology. 60: 717-724.

2015

• 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.

2013

• Tekin, E., İçgen, B., Özcengiz, G. 2013. Real-Time PCR Investigation of the dynamic expression of three ''RNA Processing and Modification'' genes of Phanerochaete chrysosporium exposed to lead. Bull Environ Contam Toxicol. 90: 27–33.
• Özcengiz, G., Demain A.L. 2013. Recent advances in the biosynthesis of penicillins, cephalosporins and clavams and its regulation. Biotechnology Advances. 31: 287-311.
• Kurt A., Álvarez-Álvarez R., Liras P., Özcengiz, G. 2013. Role of cmcH-ccaR intergenic region and ccaR overexpression in cephamycin C biosynthesis in Streptomyces clavuligerus. Applied Microbiology and Biotechnology. 97: 5869-5880.
• Tefon, B.E., Özcengiz, E., Özcengiz, G. 2013. Pertussis Vaccines: State-of-the-Art and Future Trends. Current Topics in Medicinal Chemistry. 13: 2581-2596.

2012

• Okay, S., Özcengiz, E., Gürsel, İ. and Özcengiz, G. 2012. Immunogenicity and protective efficacy of the recombinant Pasteurella lipoprotein E and outer membrane protein H from Pasteurella multocida A:3 in mice. Research in Veterinary Science. 93: 1261-1265.
• Okay, S., Özcengiz, E. and Özcengiz, G. 2012. Immune responses against chimeric DNA and protein vaccines composed of PLPEN-OMPH AND PLPEC-OMPH from Pasteurella multocida A:3 in mice. Acta Microbiologica et Immunologica H. 59: 485–500.

2011

• 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. Proteome Science. 9: 12-27.
• 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.
• 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.

2010

• 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. 1 (3): 1-7.

2009

• Altındiş, 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.

2008

• 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.
• 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.

2007

• Özcan, B., Özcengiz, G., Arzu Coleri, A., and Çökmüş, C. 2007. Diversity of halophilic archaea from six hypersaline environments in Turkey. Journal of Microbiology and Biotechnology. 17 (6): 985-992.
• Özcan, S., Yıldırım V., Kaya, L., Albrecht, D., Becher, D., Hecker, M., and Özcengiz, G. 2007. Phanerochaete chrysosporium soluble proteome as a prelude for the analysis of heavy metal response. Proteomics. 7 (8): 1249-1260.

2006

• 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.
• 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.
• Sesay, M. L., Özcengiz, G. and Sanin, F. D. 2006. Enzymatic extraction of activated sludge extracellular polymers and implications on bioflocculation. Water Research. 40: 1359-1366.

2005

• 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.
• 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.
• Assa, P., Özkan, M. and Özcengiz, G. 2005. Thermostability and regulation of Clostridium thermocellum L-lactate dehydrogenase expressed in Escherichia coli. Annals of Microbiology. 55: 193-197.

2004

• 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.
• 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.

2003

• Özkan, M., Dilek, F. B. and Özcengiz, G. 2003. Nutritional and cultural parameters influencing antidipteran delta-endotoxin production. Research in Microbiology. 154 (1): 49-53.
• Karataş, A., Çetin, S. and Özcengiz, G. 2003. The effects of insertional mutations in comQ, srfa, spo0H, spo0A and abrB genes on bacilysin biosynthesis in Bacillus subtilis. Biochimica et Biophysica Acta-Gene Structure and Expression. 1626 (1-3): 51-56.
• 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.
• Elpek, G., İçgen, B., Gürakan C. G. and Özcengiz, G. 2003. Colicinogeny in local isolates of Salmonellae and plasmid transfer studies. Folia Microbiologica. 48 (2): 257-260.

2002

• İçgen, B., Gürakan C. G. and Özcengiz, G. 2002. Characterization of Salmonella enteriditis isolates of chicken, egg and human origin from Turkey. Food Microbiology. 19(4): 375-382.
• İçgen, B., Gürakan C. G. and Özcengiz, G. 2002. Characterization of local isolates of Enterobacteriaceae of from Turkey. Microbiological Research. 157 (3): 233-238.
• İçgen, B., Özcengiz, G. and Alaeddinoğlu, N. G. 2002. Evaluation of symbiotic effectiveness of various Rhizobium cicer strains. Research in Microbiology. 153 (6): 369-372.
• İçgen, Y., İçgen, B. and Özcengiz, G. 2002. Regulation of crystal protein biosynthesis by Bacillus thuringiensis I. Effects of mineral elements and pH. Research in Microbiology. 153 (9): 599-604.
• İçgen, Y., İçgen, B. and Özcengiz, G. 2002. Regulation of crystal protein biosynthesis by Bacillus thuringiensis II. Effects of carbon and nitrogen sources. Research in Microbiology. 153 (9): 605-609.

2001

• Yazgan A., Özcengiz, G. and Marahiel, M. A. 2001. Tn10 insertional mutations of B. subtilis that block the biosynthesis of bacilysin. Biochimica et Biophysica Acta-Gene Structure and Expression. 1518: 87-94.
• Yazgan, A., Özcengiz, G., Özcengiz, E., Kılınç, K., Marahiel, M. A. and Alaeddinoğlu, N. G.. 2001. Bacilysin biosynthesis by a partially-purified enzyme fraction from B. subtilis. Enzyme and Microbial Technology. 29: 400-406.
• İçgen, B., Gürakan C. G. and Özcengiz, G. 2001. Effects of plasmid curing on antibiotic susceptibility, phage type, lipopolysaccharide and outer membrane protein profiles in local Salmonella isolates. Food Microbiology. 18: 631-635.

2000

• Yetiş, Ü., Dölek, A., Dilek, F. B. and Özcengiz, G. 2000. The removal of Pb(II) by Phanerochaete chrysosporium. Water Research. 34 (16): 4090-4100.

1999

• Yıldız, E. E., Özcengiz, G., İçgen, B. and Alaeddinoğlu, N. G. 1999. Assignment of biological functions to specific plasmids in a local isolate of Rhizobium cicer. Folia Microbiologica. 44: 55-58.
• Gürsel, M., Tunca, S., Özkan, M., Özcengiz, G. and Alaeddinoğlu, N. G. 1999. Immunoadjuvant action of plasmid DNA in liposomes. Vaccine. 17: 1376-1383
• Salameh, M., Özcengiz, G., Atalay, Ü., Özbayoğlu, G. and Alaeddinoğlu, N. G. 1999. Enhanced recovery of silver from Artvin-Kafkasör ore by microbial treatment. Process Metallurgy. 9: 493-499.

1998

• Yetiş, Ü., Özcengiz, G., Dilek, F. B., Ergen, N. Erbay, A. and Dölek, A. 1998. Heavy metal biosorption by Polyporous versicolor and Phanerochaete chrysosporium. Water Quality International. 5: 324-331.
• Yetiş, Ü., Özcengiz, G., Dilek, F. B., Ergen, N. Erbay, A. and Dölek, A. 1998. Heavy metal biosorption by white-rot fungi. Water Science and Technology. 38: 323-330.
• Yıldırmak, T., Yazgan, and A. Özcengiz, G. 1998. Multiple drug resistance patterns and plasmid profiles of non-typhi salmonellae in Turkey. Epidemiology and Infection. 121: 303-307.
• Özcengiz, G., Kim, J.-H., Lin, W.-L., Özcengiz, E., Lynd, L. R., Westenberg, D. and Demain, A. L. 1998. Superiority of the PCR-based approach for cloning the acetate kinase gene of Clostridium thermocellum. Journal of Industrial Microbiology and Biotechnology. 21: 145-149.

1996

• Özcengiz, G. 1996. Biotechnological Developments in Turkey. Critical Reviews in Biotechnology. 16: 53-94.

1994

• Yazgan, A. and Özcengiz, G. 1994. Subcellular distribution of accumulated heavy metals in Saccharomyces cerevisiae and Kluyveromyces marxianus. Biotechnology Letters. 16:871-874.

1993

• Yazgan, A., Özcengiz, G. and Alaeddinoğlu, N. G. 1993. Studies on metal-resistance system in Kluyveromyces marxianus. Biological Trace Element Research. 38: 117-127.
• Afkhami, P., Özcengiz, G. and Alaeddinoğlu, N. G. 1993. Production of the lepidoptera-specific crystal protein by a local isolate of Bacillus thuringiensis. Biotechnology Letters. 15 : 1253-1258.
• Afkhami, P., Özcengiz, G. and Alaeddinoğlu, N. G. 1993. Plasmid patterns of Bacillus thuringiensis 81 and its crystal-negative mutants. Biotechnology Letters. 15: 1247-1252.

1992

• Başalp, A., Özcengiz, G. and Alaeddinoğlu, N. G. 1992. Changes in patterns of alkaline serine protease and bacilysin caused by common effectors of sporulation in B. subtilis. Current Microbiology. 24: 129-135.

1991

• Özcengiz, G. and Alaeddinoğlu, N. G. 1991. Bacilysin production and sporulation in Bacillus subtilis. Current Microbiology. 23: 61-64.
• Özcengiz, G. and Alaeddinoğlu, N. G. 1991. Bacilysin production by Bacillus subtilis: Effects of bacilysin, pH and temperature. Folia Microbiologica. 36: 522-526.

1990

• Özcengiz, G., Alaeddinoğlu, N. G. and Demain, A. L. 1990. Regulation of biosynthesis of bacilysin by Bacillus subtilis. Journal of Industrial Microbiology. 6: 91-100.