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- W2999685513 abstract "Protein prenylation is a key modification that is responsible for targeting proteins to intracellular membranes. KRAS4b, which is mutated in 22% of human cancers, is processed by farnesylation and carboxymethylation due to the presence of a 'CAAX' box motif at the C-terminus. An engineered baculovirus system was used to express farnesylated and carboxymethylated KRAS4b in insect cells and has been described previously. Here, we describe the detailed, practical purification and biochemical characterization of the protein. Specifically, affinity and ion exchange chromatography were used to purify the protein to homogeneity. Intact and native mass spectrometry was used to validate the correct modification of KRAS4b and to verify nucleotide binding. Finally, membrane association of farnesylated and carboxymethylated KRAS4b to liposomes was measured using surface plasmon resonance spectroscopy." @default.
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- W2999685513 date "2020-01-16" @default.
- W2999685513 modified "2023-09-23" @default.
- W2999685513 title "Fully Processed Recombinant KRAS4b: Isolating and Characterizing the Farnesylated and Methylated Protein" @default.
- W2999685513 doi "https://doi.org/10.3791/60703" @default.
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