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- W2005031102 abstract "The anti-apoptotic B cell CLL/lymphoma-2 (Bcl-2) protein is a key player in the regulation of programmed cell death and is linked to various types of cancer and their resistance to drug treatment. Biophysical and structural studies of the full-length intact Bcl-2 have been hampered due to difficulties in expression and severe solubility problems, precluding isolation of this hydrophobic membrane protein. Therefore, previous work has so far mainly been carried out using structurally modified Bcl-2 variants, lacking the transmembrane region. Thus, biophysical information regarding the full-length protein is still missing. Here, a protocol is presented for expression and purification of preparative amounts of the full-length human isoform 2 of Bcl-2 (Bcl-2(2)). A batch-based cell-free expression system, using extract isolated from Escherichia coli (E. coli) was employed to produce recombinant protein encoded by an optimized gene sequence. Presence of polyoxyethylene-(20)-cetyl-ether (Brij-58) in the reaction mixture and subsequently in the immobilized metal-affinity purification steps was crucial to keep Bcl-2(2) soluble. The obtained yield was 0.25–0.3 mg per ml of cell-free reaction. Far-UV circular dichroism (CD) spectroscopy confirmed the α-helical structure of the purified protein, characteristic for members of the Bcl-2 protein family." @default.
- W2005031102 created "2016-06-24" @default.
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- W2005031102 date "2011-06-01" @default.
- W2005031102 modified "2023-10-18" @default.
- W2005031102 title "Expression and purification of full-length anti-apoptotic Bcl-2 using cell-free protein synthesis" @default.
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- W2005031102 doi "https://doi.org/10.1016/j.pep.2011.02.003" @default.
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