|Application ||WB, IF, E|
|Other Accession||NP_987096, 45269145|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||69 kDa|
|Application Notes||KEAP1 antibody can be used for detection of KEAP1 by Western blot at 1 - 2 µg/mL. For immunofluorescence start at 20 µg/mL.|
|Target/Specificity||KEAP1; At least two isoforms of KEAP1 are known to exist.|
|Reconstitution & Storage||KEAP1 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.|
|Precautions||KEAP1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||INRF2, KIAA0132, KLHL19|
|Function||Acts as a substrate adapter protein for the E3 ubiquitin ligase complex formed by CUL3 and RBX1 and targets NFE2L2/NRF2 for ubiquitination and degradation by the proteasome, thus resulting in the suppression of its transcriptional activity and the repression of antioxidant response element-mediated detoxifying enzyme gene expression. Retains NFE2L2/NRF2 and may also retain BPTF in the cytosol. Targets PGAM5 for ubiquitination and degradation by the proteasome.|
|Cellular Location||Cytoplasm. Nucleus. Note=Shuttles between cytoplasm and nucleus|
|Tissue Location||Broadly expressed, with highest levels in skeletal muscle.|
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Provided below are standard protocols that you may find useful for product applications.
KEAP1 Antibody: KEAP1 (kelch-like ECH-associated protein 1) is a stress sensing adaptor for the Cullin3 (Cul3)-dependent E3 ubiquitin ligase complex that negatively regulates NRF2 (NF-E2-related factor 2) and plays a role in the oxidative stress response. It targets NFE2L2/NRF2 for ubiquitination and degradation by the proteasome. KEAP1 contains an amino terminal BTB/POZ domain and a carboxyl terminal KELCH domain which are required for interaction with NRF2, and in binding Cul3-E3 ubiquitin ligase. Altered expression of NRF2 is associated with chronic obstructive pulmonary disease (COPD). KEAP1 also targets the down regulation of NF-κB activity by targeting IKKβ degradation. Mutation of the KEAP1 gene is found in lung cancer.
Zhang DD, Lo SC, Cross JV, et al. Keap1 is a redox-regulated substrate adaptor protein for a Cul3-dependent ubiquitin ligase complex. Mol. Cell. Biol. 2004;24:10941-53.
Kobayashi A, Kang MI, Okawa H, et al. Oxidative stress sensor Keap1 functions as an adaptor for Cul3-based E3 ligase to regulate proteasomal degradation of Nrf2. Mol. Cell. Biol. 2004; 24:7130-9.
Jiang J, Mo ZC, Yin K, et al. Epigallocatechin-3-gallate prevents TNF-α-induced NF-kappaB activation thereby upregulating ABCA1 via the Nrf2/Keap1 pathway in macrophage foam cells. Int. J. Mol. Med. 2012; 29:946-56.
Devling TW, Lindsay CD, McLellan LI, et al. Utility of siRNA against Keap1 as a strategy to stimulate a cancer chemopreventive phenotype. Proc. Natl. Acad. Sci. USA 2005; 102: 7280-5A.
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