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Nt in dihydrofolate reductase activity. Proc Natl Acad Sci U S A 1980, 77(7):4216?220. 11. Derouazi M, Martinet D, Besuchet Schmutz N, Flaction R, Wicht M, Bertschinger M, Hacker DL, Beckmann JS, Wurm FM: Genetic characterization of CHO production host DG44 and derivative recombinant cell lines. Biochem Biophys Res Commun 2006, 340(four):1069?077. 12. Weiner M, Gackstetter T, Costa G, Bauer C, Kretz K: Site-directed Mutagenesis making use of PCR. In Molecular Biology: Existing Innovations and Future Trends. Edited by Griffin A, Griffin H. Wymondham, Norfolk, U.K: Horizon Scientific Press; 1995. 13. Orlova NA, Orlov AV, Vorobiev II: A modular assembly cloning technique (aided by the BIOF computer software tool) for seamless and error-free assembly of extended DNA fragments. BMC Res Notes 2012, five:303. 14. Kozak M: An analysis of 5-noncoding NPY Y5 receptor Agonist Storage & Stability sequences from 699 vertebrate messenger RNAs. Nucleic Acids Res 1987, 15(20):8125?148. 15. Patterson GH, Knobel SM, Sharif WD, Kain SR, Piston DW: Use with the green fluorescent protein and its mutants in quantitative fluorescence microscopy. Biophys J 1997, 73(5):2782?790. 16. Ribeiro S, Mairhofer J, Madeira C, Diogo MM, Lobato da Silva C, Monteiro G, Grabherr R, Cabral JM: Plasmid DNA size does influence nonviral gene delivery efficiency in stem cells. Cell Reprogram 2012, 14(2):130?37. 17. Wasley LC, Rehemtulla A, Bristol JA, Kaufman RJ: PACE/furin can procedure the vitamin K-dependent pro-factor IX precursor within the secretory pathway. J Biol Chem 1993, 268(12):8458?465.Further fileAdditional file 1: Primer sequences applied for cloning and sequencing the p 1.1 and p 1.2 expression vectors. Abbreviations CHO cells: Chinese hamster ovary (CHO) cells; MTX: Methotrexate; eGFP: Enhanced green fluorescent protein; EBVTR: Concatemer of the terminal repeats from the Epstein-Barr virus; PCR: Polymerase chain reaction; Kbp: Kilo base pairs (1000 base pairs); EEF1A: Chinese hamster Elongation aspect 1 alpha; IRES: Internal ribosome entry web-site; DHFR: dihydrofolate reductase (EC 1.five.1.3); ORF: open reading frame; RFU: relative fluorescence units. Competing NK2 Antagonist drug interests JAH, AGG and KGS declare that they have no competing interests. NAO, SVK and IIV are inventors of your patent RU2488633, which covers use of the p1.1 vector. Authors’ contributions NAO developed the experimental approach and plasmid style, performed cloning procedures, and drafted the manuscript. SVK performed the cell culture experiments and helped to draft the manuscript. IIV initiated the project, participated in its design and coordination and drafted the manuscript. NAO, JAH and IIV carried out the copy quantity determination experiments, SVK, JAH and IIV performed eGFP level determinations. AGG and KGS coordinated the project. All the authors have study and authorized the final manuscript. Acknowledgments The authors want to thank Dr Sergei Khaidukhov for performing the FACS evaluation and Dr Ivan Vorobiev (senior) for supplying the suggestions for FACS information interpretation. We also thank Dr Ivan Zvyagin, Lev Usakin, Maria Kordyukova and Victoria Shender for taking part inside the molecular cloning procedures. The operate was supported by the following grants: RFBR 13-0440277- “Combinatorial chemistry and Biology approaches to theranostics of many sclerosis”; RFBR 14-04-00647 ” Combinatorial biology approaches utilizing yeast show for development of biocatalysts de novo”; Plan of the Presidium with the Russian Academy of Sciences No24 “Detection of Viral Antigens as possible Trigger.

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Author: Proteasome inhibitor