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Preparation and expression of p53 protein isoforms using the GATEWAY expression system
 Wikarská, Monika ; Hrstka, Miroslav (oponent) ; Brázda, Václav (vedoucí práce)
The TP53 gene can express protein p53 and 11 another isoform proteins N- and/or C-terminally truncated by using two promoters and alternative splicing. The p53 isoforms are found in both healthy and tumorous tissues, and are intensively studied in relation to cancer diagnosis, prognosis and treatment. In this work, the p53 isoforms were subcloned into expression vectors by LR reaction adapted from Gateway cloning system. The expression vectors were designed for protein production by bacteria E. coli strain BL-21. The constructs containing p53 isoforms were encoded together with two fusion proteins, glutathione-S-transferase and polyhistidine tag under the control of the same promotor for the affinity chromatography protein isolation. All the clones underwent Sanger sequencing for verification after homologous recombination. Sequencing confirmed the accuracy of the subcloned isoforms p53, 133p53, 160p53, p53 and 160p53 into an expression vector pDEST15-N6xHis-GST-GW-DEST. Protein 160p53 was expressed in BL-21 and isolated using both HIS and GST tag interacion. Isolation using HIS tag yielded in a higher protein concentration then the isolation mediated by the interaction of the glutathione-S-transferase.
Úplný záznam
Preparation and expression of p53 protein isoforms using the GATEWAY expression system
 Wikarská, Monika ; Hrstka, Miroslav (oponent) ; Brázda, Václav (vedoucí práce)
The TP53 gene can express protein p53 and 11 another isoform proteins N- and/or C-terminally truncated by using two promoters and alternative splicing. The p53 isoforms are found in both healthy and tumorous tissues, and are intensively studied in relation to cancer diagnosis, prognosis and treatment. In this work, the p53 isoforms were subcloned into expression vectors by LR reaction adapted from Gateway cloning system. The expression vectors were designed for protein production by bacteria E. coli strain BL-21. The constructs containing p53 isoforms were encoded together with two fusion proteins, glutathione-S-transferase and polyhistidine tag under the control of the same promotor for the affinity chromatography protein isolation. All the clones underwent Sanger sequencing for verification after homologous recombination. Sequencing confirmed the accuracy of the subcloned isoforms p53, 133p53, 160p53, p53 and 160p53 into an expression vector pDEST15-N6xHis-GST-GW-DEST. Protein 160p53 was expressed in BL-21 and isolated using both HIS and GST tag interacion. Isolation using HIS tag yielded in a higher protein concentration then the isolation mediated by the interaction of the glutathione-S-transferase.
Úplný záznam

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