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英文名 ：Ras GTPase Chemi ELISA Kit
库存 ：大量
供应商 ：Active Motif
CAS号 ：详询
规格 ：1 x 96 rxns
Ras GTPase Chemi ELISA Kit Overview
The Ras GTPase Chemi ELISA Kit was designed specifically for the study of Ras activation, and can be used to detect and quantify activated Ras GTPase in cell or tissue extracts. Monitoring levels of activated Ras can be useful for studying novel Ras activating signaling pathways, detecting oncogenic Ras proteins, or monitoring the effects of possible therapeutic compounds.
The Ras GTPase Chemi ELISA Kit uses the unique binding properties of the Ras-binding domain of the c-Raf kinase protein (Raf-RBD) which only binds activated Ras. A GST-fused Raf-RBD protein is bound to a 96-well glutathione-coated assay plate and addition of sample to the plate results in the binding of activated Ras to the Raf-RBD. A primary antibody specific for Ras is then added to the individual wells, followed by an HRP-conjugated secondary antibody and developing reagent . The plate is then read on a luminometer, which provides a sensitive chemiluminescent readout of activated Ras. The 96-well plate is suitable for both manually assaying small numbers of samples and for use in automated high-throughput screening assays.
The Ras GTPase Chemi ELISA Kit uses the unique binding properties of the Ras-binding domain of the c-Raf kinase protein (Raf-RBD) which only binds activated Ras. A GST-fused Raf-RBD protein is bound to a 96-well glutathione-coated assay plate and addition of sample to the plate results in the binding of activated Ras to the Raf-RBD. A primary antibody specific for Ras is then added to the individual wells, followed by an HRP-conjugated secondary antibody and developing reagent . The plate is then read on a luminometer, which provides a sensitive chemiluminescent readout of activated Ras. The 96-well plate is suitable for both manually assaying small numbers of samples and for use in automated high-throughput screening assays.
Flow Chart of Ras GTPase Chemi ELISA Kit(Click image to enlarge)
Ras GTPase Background
The Ras protein is a GTPase enzyme. GTPases are a family of enzymes which bind to and hydrolyze GTP, functioning as molecular switches. When bound to GTP, Ras is active and activates effector proteins involved in the downstream control of cell proliferation and differentiation. When bound to GDP, Ras is inactive.Ras signaling cascades are normally only transiently activated. This is because the Ras GTPase activity gradually converts GTP to GDP, rendering the protein inactive. However, oncogenic mutations of the Ras gene can lock the protein into the active GTP conformation, creating a form of the protein that is always active. The result is constituatively active Ras signaling and cells which grow uncontrollably. In fact, mutations of the Ras gene are present in around 30% of human cancers and are present in an especially high percentage of pancreatic, lung, and colorectal cancers. Consequently, Ras has become a popular target for cancer research and anti-cancer therapeutics.
Ras GTPase Chemi ELISA Kit Highlights
- Detection Range – Works with 3-25 µg whole cell extract or > 0.6 ng purified protein per well.
- Better Results – ELISA format is more sensitive than pull-down/Western methods.
- Versatile – Use with extracts from cell and tissue samples, or with purified Ras protein
- Reactivity – detects activated human K-Ras and H-Ras or activated rodent H-Ras
- Quick – Results in fewer than 5 hours
Ras GTPase Chemi ELISA Kit Contents
The Ras GTPase Chemi ELISA Kit contains sufficient reagents to perform 96 reactions. It is shipped on dry ice and contains reagents with multiple storage temperatures inside. Please confirm receipt of all reagents upon arrival and store items at the appropriate temperatures as indicated below. All reagents are guaranteed stable for 6 months from date of receipt when stored properly. This kit includes the following components:- Hela whole-cell extract (EGF treated); Store at -80°C
- GST-Raf-RBD; Store at -80°C
- H-Ras antibody; Store at -20°C
- Anti-rat HRP-conjugated IgG; Store at -20°C
- Protease Inhibitor Cocktail (PIC); Store at -20°C
- Lysis/Binding Buffer AM1; Store at 4°C
- 10X Wash Buffer AM2; Store at 4°C
- 10X Antibody Binding Buffer AM2; Store at 4°C
- Chemiluminescent Reagent; Store at 4°C
- Reaction Buffer; Store at 4°C
- 96-well Glutathione-coated Assay Plate; Store at 4°C
- Plate Sealer; Store at 4°C
Ras GTPase Chemi ELISA Data
Figure 1: Ras GTPase Chemi ELISA quantifies activated Ras
Increasing amounts of whole-cell extract from HeLa cells that had been stimulated with 5 ng/ml of EGF for 2 minutes were assayed using the Ras GTPase Chemi ELISA Kit. Data is also shown for unstimulated HeLa cells which contain basal levels of activated Ras.
Increasing amounts of whole-cell extract from HeLa cells that had been stimulated with 5 ng/ml of EGF for 2 minutes were assayed using the Ras GTPase Chemi ELISA Kit. Data is also shown for unstimulated HeLa cells which contain basal levels of activated Ras.
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