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當前位置:BPS Bioscience Inc.>>Ras Signaling Assay Kits>> 78583KRAS Isoform B Coupled Nucleotide Exchange Assay Kit
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產(chǎn)品型號78583
品 牌BPS Bioscience
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更新時間:2023-11-11 21:18:50瀏覽次數(shù):221次
聯(lián)系我時,請告知來自 化工儀器網(wǎng)The KRAS IsoformB Coupled Nucleotide Exchange Assay Kit is designed for screening and profiling of KRAS IsoformB antagonists/inhibitors by monitoring the binding of an effector protein such as the Ras binding domain of Raf1, (RBD-cRaf) to KRAS. With this kit, a few simple steps on a microtiter plate are required for nucleotide exchange detection. First, a sample containing GDP-loaded KRAS Isoform B is incubated with SOS1 and GTP for the nucleotide exchange. Next, RBD-cRAF is added and incubated for the
effector-RAS binding. Then, acceptor and donor beads are added and incubated for detection followed by reading the Alpha-counts.
SOS1(son of sevenless)is a guanine nucleotide exchange factor that facilitates the exchange of GDP for GTP. GDP-loaded KRAS Isoform B is in an inactive state and does not interact with the Ras-binding domain (RBD) of cRAF. SOS1 assists in the release of GDP from KRAS Isoform B so that GTP can occupy the nucleotide binding pocket. This results in a conformational change in KRAS IsoformB that permits its binding to RBD-cRAF. The KRAS IsoformB Coupled Nucleotide Exchange Assay Kit utilizes GST-tagged RBD-cRAF and His-tagged KRAS Isoform B to assay binding of KRAS to RBD-cRAF in the Alpha assay. Glutathione acceptor and Ni chelate donor beads are brought into proximal range by the binding of KRAS and RBD-cRAF, enabling the energy transfer from the donor to acceptor beads after laser excitation.
Figure 1: Illustration of the assay principle.
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