M. Tileva, E. Krachmarova, I. Ivanov, K. Maskos and G. Nacheva Production of Aggregation Prone Human Interferon Gamma and Its Mutant in Highly Soluble and Biologically Active Form by SUMO Fusion Technology, Protein Expression and Purification, 1 January 2016, Volume 117, Pages 26-34, doi: http://dx.doi.org/10.1016/j.pep.2015.09.022
P. Leister, M. Tileva, E. Krachmarova and G. Nacheva Expression of human interferon-gamma gene in human tissue culture cells. Biotech. Biotechnol. Equ., 2013, Vol. 27, No (1), 3573-3576, http://dx.doi.org/10.5504/bbeq.2012.0128.
Kirilov, K., Golshani, A. & Ivanov, I.  (2013) Termination codons and stop codon context in bacteria and mammalian mitochondria. Biotechnol. & Biotechnol. Eq. 27(4), 4018-4025, http://dx.doi.org/10.5504/bbeq.2013.0052., , ISSN 1310-2818.
Litov, L., Ivanov, I., Petkov, P., Petkov, P., Lilkova, E., Markov, S., Ilieva, N., Nacheva, G. & Petrov, S. (2012). A New Approach to Cope with Autoimmune Diseases: Computer Simulations and Laboratory Tests. Radiotherapy and Oncology 102, S134-S135.
Bachvarov, B., Kirilov, K. and Ivanov, I. (2012) Codon and Codon Pairs Usage in Bacteria. In Genetics Research Summaries (Lyndsay E. Hewitt and John W. O'Neil) Nova Science Publishers, Inc. NY, USA, pp. 29-30.
Bachvarov, B., Kirilov, K. and Ivanov, I. (2012) Codon Usage and Gene Expression in Bacteria. In: Encyclopedia of DNA Research, Chapter 1 (Eds: Samuel J. Duncan and Patricia H. Wiley), Nova Science Publishers, Inc. NY, USA. ISBN 978-1-61324-305-3.
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Kirilov, K., Ivanov, I.  (2012) A programme for determination of codons and codons context frequency of occurrence in sequenced genomes. Biotechnol & Biotechnol Eq. 26, 3310-3314; IF 0760, ISSN 1310-2818.
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Mladen Popov, Genoveva Nacheva, Udo Reichl and Ivan Ivanov Effect of the 3-Terminal Truncation of the Human Interferon-gamma Gene on Plasmid Segregation in Escherichia coli. Biotech. Biotechnol. Equ., 2012, Vol. 26, No 2, 2930-2936, DOI: 10.5504/bbeq.2012.0011.
E. Lilkova, G. Nacheva, P. Petkov, P. Petkov, S. Markov, N. Ilieva, L. Litov Metadynamics study of mutant human interferon-gamma forms. Computers and Mathematics with Applications, 2012, Vol. 64, No 3, 272-277, http://dx.doi.org/10.1016/j.camwa.2012.01.061.
G. Nacheva, E. Lilkova, P. Petkov, P. Petkov, N. Ilieva, I. Ivanov and L. Litov In silico studies on the stability of human interferon-gamma mutants. Biotech. Biotechnol. Equ., 2012, Vol. 26, SE, 200-204, DOI: 10.5504/50YRTIMB.2011.0036.
Mironova R, Handzhiyski Y, Niwa T, Berzal-Herranz A, Datsenko KA, Wanner BL, Ivanov I. Maillard Reaction and Spontaneous Mutagenesis in Escherichia coli. Chapter 1 in: Encyclopedia of DNA Research (3 Volume set), Eds: Duncan SJ and Wiley PH, Nova Science Publishers, Inc. NY, USA (2012-February) 51-88, ISBN 978-1-61324-305-3.
Tsekovska RG, Boyanova MS, Mironova RS, Ivanov IG. (2012) Impact of glycation inhibitors on the biologic activity of recombinant human interferon-gamma. Biotechnol & Biotechnol Eq., 26, 170-174; ISSN 1310-2818.
Atanasova, A, Handzhiyski Y, Sredovska-Bozhinov A, Popova E, Odjakova M, Datsenko KA, Wanner BL, Ivanov I, and Mironova R. (2012) Substrate specificity of the Escherichia coli FrlB amadoriase. Biotechnol & Biotechnol Eq., 26, 140-145; ISSN 1310-2818.
Hinkov I, Diankov S, Karsheva M, Lasheva V, Ivanov I, Handzhiyski Y. Synthèse de nanoparticules dargent par voie micro-onde et leur intégration dans des feuilles de cellulose pour des applications agroalimentaires. Revue de Génie Industriel, ISSN 1313-8871 (2011; in press).
Maximova V., Kirilov K., Markov S., Ivanov I. Comparative genomic studies of influenza A viruses performed on BlueGeneP supercomputer: Part 1. Conservative nucleotide sequences in influenza A virus genomes revealed by multiple sequence alignment. Bitechnol. & Biotechnol.Eq.  25 (2011) 2672-2678. ISSN 1310-2818.
Bozhinov A, Handzhiyski Y, Genov K, Daskalovska V, Niwa T, Ivanov I, Mironova R. Advanced glycation end products contribute to the immunogenicity of IFN-γ pharmaceuticals. J Allergy Clin Immun., 2011, doi: 10.1016/j.jaci.2011.10.035, ISSN 0091-6749.
Popov, M., Petrov, S., Nacheva, G., Ivanov, I., Reichl, U. Effects of a recombinant gene expression on ColE1-like plasmid segregation in Escherichia coli. BMC Biotechnology 11 (2011) 18-30.
Bagis, H., Aktoprakligil, D.,  Gunes, C., Arat, S., Akkos, T.,  Cetinkaya, G.,  Kankavi, O., Taskin, A., Arslan, K., Dundar, M.,  Tsoncheva, V. and Ivanov, I.G.  Expression of biologically active human interferon-gamma in the milk of transgenic mice under the control of the murine whey acidic protein gene promoter. Biochem Genet 1 (2010) DOI 10.1007/s10528-010-9403-7; ISSN 0006-2928.
Petrov, S., Nacheva, G. and Ivanov, I. Purification and refolding of recombinant human interferon-gamma in urea-ammonium chloride solution. Protein Express. & Purificat. 73 (2010) 70-73.
Boyanova, M,  Mironova, R., Niwa, T. and Ivanov, I. (2008) Post-translational processing of human interferon-gamma produced in Escherichia coli and approaches for its prevention. In: NIH Frontiers in Research, Vol. 1, Chapter 40, pp. 365-373, Humana Press, Totowa, NJ.
Bachvarov, B., Kirilov, K. and Ivanov, I. Codon usage in prokaryotes. Biotech. Biotechnol. Equipm. 22 (2008) 669-682.
Mironova, R., Sredovska, A., Ivanov, I. and Niwa, T. Maillard reaction products in the Escherichia coli derived therapeutic protein interferon Alfacon-1. Ann. N.Y. Acad. Sci. 1126 (2008) 181-184.
Stoynev, G., Srebreva, L., Gugova, R., Golovinski, E. and Ivanov I. Inhibitory effect of some acetyl esters and acetamides on glycation of the histone H1. Z. Naturforsch. 63c (2008) 526-532.
Tsoncheva V.L., Todorova K.A., Ivanov I.G. and Maximova V.A. Influence of Interferons on the Repair of UV-Damaged DNA. Z. Naturforsch. 63c (2008) 303-307.
Boyanova, M,  Mironova, R., Niwa, T. and Ivanov, I. (2008) Post-translational processing of human interferon-gamma produced in Escherichia coli and approaches for its prevention. In: NIH Frontiers in Research, Vol. 1, Chapter 40, pp. 365-373, Humana Press, Totowa, NJ.
Tsanev, R., Boyanova, M. and Ivanov, I. Fluorescent analysis of interferon-gamma. Biotech. Biotechnol. Equipm. 21 (2007) 215-219.
Butland G, Krogan NJ, Xu J, Yang WH, Aoki H, Li JS, Krogan N, Menendez J, Cagney G, Kiani GC, Jessulat MG, Datta N, Ivanov I, Abouhaidar MG, Emili A, Greenblatt J, Ganoza MC, Golshani A. Investigating the in vivo activity of the DeaD protein using protein-protein interactions and the translational activity of structured chloramphenicol acetyltransferase mRNAs. J. Cell. Biochem. 100 (2006) 642-652.
Tsoncheva, V., Todorova, K., Maximova, V. and Ivanov, I.G. Spontaneous transfection of mammalian cells with plasmid DNA. Z. Naturforsch. 60c (2005) 644-648.
Mironova, R., Niwa, T., Handzhiyski, Y., Sredovska, A., and Ivanov, I. Evidence for non-enzymatic glycosylation of Escherichia coli chromosomal DNA. Mol. Microbiol. 55 (2005)  1801-1811.
Dimitrova, R., Mironova, R. and Ivanov, I.G. Glycation of proteins in Escherichia coli: Interference of strain diversity and growth conditions with glycation. Compt. Rend. Bulg. Acad. Sci. 57 (2004) 71-75.
Stoynev, G., Srebreva, L. and Ivanov, I.G. Histone H1 as a reporter protein to investigate glycation in bacteria. Curr. Microbiol. 49 (2004) 423-427.
Golshani, A., Xu, J., Pacal, M., Yang, X., Ganoza, M., Ivanov, I. and AbouHaidar, M. Computationally identified and experimentally proven strong ribosome binding sites in the Escherichia coli genome. Biochem. Biophys. Res. Comm 316 (2004) 978-983.
Boycheva, S., Bachvarov, B., Berzal-Heranz, A. and Ivanov, I.G. Effect of 3terminal codon pairs with different frequency of occurrence on the expression of cat gene in Escherichia coli. Curr. Microbiol. 48 (2004) 97-101.
Mironova, R., Niwa, T., Dimitrova, R., Boyanova, M. and Ivanov, I. Glycation and post-translational processing of human interferon-gamma expressed in Escherichia coli. J. Biol. Chem. 278 (2003) 51068-51074.
Atanassova, A., Sugita, M., Sugiura, M., Pajpanova, T. and Ivanov, I. Molecular cloning, expression and characterization of three distinctive genes encoding methionine aminopeptidases in cyanobacterium Synechocystis sp., strainPCC6803. Arch. Microbiol. 180 (2003) 185-193.
Kolev, V., Ivanov, I., Berzal-Herranz, A. and Ivanov, I. Non-Shine-Dalgarno initiators of translation selected from a combinatorial DNA library. J. Mol. Microbiol. Biotechnol. 5 (2003) 154-160.
Boycheva, S., Shkodrov, G. and Ivanov, I. Codon pairs in the genome of Escherichia coli. Bioinformatics 29 (2003) 987-998.                                                   Nacheva, G., Todorova, K., Boycheva, M., Berzal-Herranz, A., Karshikov, A. and Ivanov, I. Human interferon-gamma: Significance of the C-terminal flexible domain for its biological activity. Arch. Biochem. Biophys. 413 (2003) 91-98.                                                                                                     
Nacheva, G., Boyanova, M., Todorova, K., Kyurkchiev, S.  and Ivanov, I. Characterization of functional domains of human interferon gamma by specific monoclonal antibodies. Folia Biologica 48 (2002) 96-101.  
Boycheva, S. and Ivanov, I. Missing codon pairs in the genome of Escherichia coli. Biotechnol. Biotechnol. Equipm. 16 (2002) 142-144.                                        Boyanova, M., Tsanev, R. and Ivanov, I. A  modified  kynurenine bioassay for  quantitative determination  of  human  interferon  gamma. Analyt. Biochem. 308 (2002) 178-181.
Golshani, A., Xu, J.,  Kolev, V., AbouHaidar, M. and Ivanov, I. Inability of Agrobacterium tumefaciens ribosome to translate in vivo mRNAs containing non-Shine-Dalgarno translational initiators. Zeitschr. Naturforsh.  57c (2002) 307-312.
Altobelli G., Nacheva G., Todorova K., Ivanov I., Karshikoff A. Role of the C-terminal chain in human interferon gamma stability: An electrostatic study. Proteins: Str., Func., Genet. 43 (2001) 125-133.                                                                                                                                            
Mironova, R., Niwa, T., Hayashi, H, Dimitrova, R. and Ivanov, I. Evidence for non-enzymatic glycosylation in Escherichia coli. Mol. Microbiol. 39(2001)1061-68.
Ofoghi, H., Moazami, N., Domonsky, N.N. and Ivanov, I. Cloning and expression of human calcitonin genes in transgenic potato plants. Biotechnol. Lett. 22 (2000) 611-615.
Golshani, A., Kolev, V., AbouHaidar, M.G.  and Ivanov, I.G. Epsilon as an Initiator of Translation of CAT mRNA in Escherichia coli. Biochem. Biophys. Res. Comm. 269 (2000) 528-531.
Golshani, A., Kolev, V., Mironova, R.,  AbouHaidar, M.G.  and Ivanov, I.G. Enhancing Activity of  in Escherichia coli and Agrobacterium tumefaciens cells. Biochem. Biophys. Res. Comm. 269 (2000) 508-512.
Vassileva, A., Niwa, T., Mironova, R., and Ivanov, I.G. Mass-spectral ESI-MS analysis of human interferon- and chloramphenicol acetyltransferase I produced in two Escherichia coli strains. J. Biotechnol. 78 (2000) 61-67.
Andreeva, A.E., Borissova, E., Mironova, R., Glycos, M., Kotsifaki, D., Ivanov, I., Krysteva, M. and Kokkinidis, M. Crystalization of type I chloramphenicol acetyltransferase: an approach based on the concept of ionic strength reducers. Acta Crystal. D56 (2000) 101-103.
Timcheva, I., Maximova, V., Deligeorgiev, T., Zaneva, D. and Ivanov, I.G. New asymetric monomethine cyanine dyes for nucleic acids labelling: Absorption and fluorescence spectral characteristics. J. Photochemistry and Photobiology A: Chemistry 130 (2000) 7-11.