André Nobre - Research Scientist - iCellate Medical AB


BLOCK 3 - Virus-cellinteraktioner, aktiv infektion Flashcards

Expression of T antigen from SV40, … with the SV40 large T antigen Miki Nakamura-Ota • Ryoji Hamanaka • Hiroyuki Yano • Sawako Adachi • Hideaki Sumiyoshi • Noritaka Matsuo • Hidekatsu Yoshioka Received: 28 March 2013/Accepted: 16 August 2013 Springer Science+Business Media Dordrecht 2013 Abstract The murine preosteoblastic cell line, MC3T3-E1, is widely used to study PIRSF003368, Large_T_antigen_polyomaV, 1 hit: SMART i: View protein in SMART SM00271, DnaJ, 1 hit: SUPFAM i: SSF46565, SSF46565, 1 hit SSF52540, SSF52540, 1 hit: PROSITE i: View protein in PROSITE PS50076, DNAJ_2, 1 hit PS51206, SF3_HELICASE_1, 1 hit PS51287, T_AG_OBD, 1 hit PS51341, ZF_LTAG_ SV40 T antigen is encoded by the early region of the SV40 genome. The large T antigen binds DNA, and complexes with a 53,000 dalton cellular protein, p53, which is required for initiation of viral DNA replication during lytic growth. In addition the large T antigen binds DNA polymerase and the transcription factor AP2 and forms a specific complex The 293FT Cell Line is a fast-growing, highly transfectable clonal isolate derived from human embryonal kidney cells transformed with the SV40 large T antigen. When a ViraPower™ expression vector and the ViraPower™ Lentiviral Packaging Mix are co-transfected into 293FT cells, high levels of the viral RNA and the gag⁄pol and rev proteins required for packaging are produced. version of the SV40 large T antigen.5,6 The SV40 large T antigen is known to be capable of transforming human and rodent cells in vitro and in vivo. Also SV40-transformed human cells are able to produce tumors when administered to nude mice.7,8 Therefore, the presence of residual SV40 T antigen protein and/or T … SV40 large T antigen .

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SV40 large T antigen (TAg) is a powerful One of the frequently used genes for immortalization is the SV40 virus large T-antigen (TAg), which overcomes p53 and pRB dependent cell cycle arrest . A thermolabile mutant has been isolated ( 2 ) and used in the creation of conditionally immortalized cells ( 3 , 4 ). This is clearly shown during SV40 productive infections where T antigen levels rise during the first 24 h postinfection, but then reach a steady-state level. Mutation of the T antigen binding sequences in the early promoter eliminate this autoregulation and lead to constituitively high levels of T antigen. Large T antigen is also a transcriptional activator. Se hela listan på Clear.

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The TAg has a CUL7 -binding domain, a TP53 -binding domain, a Zinc finger, and a Superfamily 3 ATPase/Helicase Mechanism. After entering the SV40 large T antigen for immortalizing cells David Ron Lab: SV40 large T antigen for immortalizing cells Unpublished. Plasmids from Article. ID ELISA Kits detecting SV40 Large T Antigen can be used to research p53 tumor suppressor proteins or to study restinoblastoma.

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SV40 large T antigen (Simian Vacuolating Virus 40 TAg) is a hexamer protein that is a dominant-acting oncoprotein derived from the polyomavirus SV40. TAg is capable of inducing malignant transformation of a variety of cell types. Simian Virus 40 (SV40) Large Tumor Antigen (LT) is an essential enzyme that plays a vital role in viral DNA replication in mammalian cells. As a replicative helicase and initiator, LT assembles as a double-hexamer at the SV40 origin to initiate genomic replication. In this process, LT converts the chemical energy from ATP binding and hydrolysis into the mechanical work required for unwinding replication forks.

Sv40 large t antigen

1979; Kress et al. 1979; Lane and Crawford   Large T-antigen