Rabbit anti-Human, Rat KEAP1 Polyclonal Antibody | anti-KEAP1 antibody

KEAP1 Polyclonal Antibody

Cat. Num. AAA3008194

• Gene Names: KEAP1; INrf2; KLHL19
• Reactivity: Human, Rat
• Applications: Western Blot, Immunohistochemistry, Immunofluorescence
• Purity: The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is >95% (by SDS-PAGE).
• Synonyms: KEAP1; Polyclonal Antibody; KEAP1 Polyclonal Antibody; Cytosolic inhibitor of Nrf2; INrf 2; INrf2; Keap 1; Kelch like ECH associated protein 1; Kelch like protein 19; Kelch-like ECH-associated protein 1; Kelch-like protein 19; KIAA0132; KLHL 19; KLHL19; MGC10630; MGC1114; MGC20887; MGC4407; MGC9454; anti-KEAP1 antibody

• Host: Rabbit
• Reactivity: Human, Rat
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: KEAP1 polyclonal antibody detects endogenous levels of KEAP1 protein.
• Purity/Purification: The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is >95% (by SDS-PAGE).
• Form/Format: Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2
• Sequence Length: 624

• Applicable Applications for anti-KEAP1 antibody: Western Blot (WB), Immunohistochemistry (IHC), Immunofluorescence (IF)
• Application Notes: WB: 1:500-1:2000; IHC: 1:50-1:200; IF: 1:50-1:200
• Immunogen: Recombinant full length Human KEAP1.
• Preparation and Storage: Store at 4 degree C short term.; Aliquot and store at -20 degree C long term.; Avoid freeze-thaw cycles.

Western Blot (WB)

(Western Blot analysis of extracts of Jurkat cell lines, using KEAP1 antibody.)

Immunohistochemistry (IHC)

(Immunohistochemistry (IHC) analysis of KEAP1 polyclonal antibody in paraffin-embedded Rat Spleen tissue.)

Related Product Information for anti-KEAP1 antibody

Keap1 (kelch-like ECH-associated protein 1, INrf2, KLHL19) is a stress sensing adaptor for the Cullin3 (Cul3)-dependent E3 ubiquitin ligase complex that negatively regulates Nrf2 (NF-E2-related factor 2). Steady state proteins are under the influence of the ubiquitin pathway, which consists of ubiquitin activation (E1), conjugation (E2) and ligation (E3). Keap1 assembles into an E3 ubiquitin ligase complex with Cul3 and Rbx1 and targets lysine residues in the N-terminal Neh2 domain of Nrf2 for ubiquitin conjugation. The Keap1-Nrf2 system mediates cytoprotective gene expression in response to oxidative and/or electrophilic stresses. Keap1 constitutively suppresses Nrf2 activity under unstressed conditions, oxidants or electrophiles provoke the repression of Keap1 activity, inducing Nrf2 activation. Cys 273 and Cys 288 residues of Keap1 are required for suppressing Nrf2 nuclear accumulation. Keap1 sequesters Nrf2 in the cytoplasm through an active Crm1/exportin-dependent nuclear export mechanism.

NCBI and Uniprot Product Information

• NCBI GI #: 146345444
• NCBI GeneID: 9817
• UniProt Accession #: Q14145
• Molecular Weight: ~ 70kDa
• NCBI Official Full Name: Kelch-like ECH-associated protein 1
• NCBI Official Synonym Full Names: kelch like ECH associated protein 1
• NCBI Official Symbol: KEAP1
• NCBI Official Synonym Symbols: INrf2; KLHL19
• NCBI Protein Information: kelch-like ECH-associated protein 1
• UniProt Protein Name: Kelch-like ECH-associated protein 1
• Protein Family: Kelch-like ECH-associated protein
• UniProt Gene Name: KEAP1
• UniProt Synonym Gene Names: INRF2; KIAA0132; KLHL19; INrf2
• UniProt Entry Name: KEAP1_HUMAN

NCBI Description

This gene encodes a protein containing KELCH-1 like domains, as well as a BTB/POZ domain. Kelch-like ECH-associated protein 1 interacts with NF-E2-related factor 2 in a redox-sensitive manner and the dissociation of the proteins in the cytoplasm is followed by transportation of NF-E2-related factor 2 to the nucleus. This interaction results in the expression of the catalytic subunit of gamma-glutamylcysteine synthetase. Two alternatively spliced transcript variants encoding the same isoform have been found for this gene. [provided by RefSeq, Jul 2008]

Uniprot Description

KEAP1: a substrate adapter protein for the E3 ubiquitin ligase complex formed by CUL3 and RBX1. Has tumor suppressor activity. Retains NRF2, BPTF and PGAM5 in the cytosol. Targets NRF2 for ubiquitination and degradation by the proteasome, thus resulting in the suppression of its transcriptional activity and of antioxidant response element-mediated detoxifying enzyme gene expression. Somatic mutations of KEAP1 or NRF2 commonly occur in solid cancers, irrespective of histological type, resulting in the constitutive transcription of cytoprotective genes. Genetic disruption of the KEAP1/CUL3 E3 ubiquitin ligase complex leads to the activation of the NF-kappaB pathway in lung cancer. Alternative activation of the cytoprotective NRF2 pathway exist in the absence of mutations in KEAP1 and HRF2: WTX, PALB2, SQSTM1, and DPP3 can competitively bind KEAP1. These proteins and others that bind KEAP1 contain an ¿ETGE¿ amino acid motif, which matches the KEAP1 interaction motif found in NRF2. Binding of these ¿ETGE¿-containing proteins can displace NRF2, freeing it to translocate to the nucleus and implement its cytoprotective transcriptional pathway. The DPP3 gene is frequently overexpressed in squamous cell lung carcinomas with high wt NRF2 activity. Its expression level significantly correlates with the response rate and progression-free survival of platinum-based first-line chemotherapy. May be a useful biomarker for predicting the chemosensitivity of patients with advanced-stage NSCLC. Broadly expressed, with highest levels in skeletal muscle. Ubiquitination and subsequent degradation of PGAM5 is inhibited by oxidative stress and sulforaphane.

Protein type: Ubiquitin conjugating system; Transcription regulation; Motility/polarity/chemotaxis; Endoplasmic reticulum

Chromosomal Location of Human Ortholog: 19p13.2

Cellular Component: nucleoplasm; endoplasmic reticulum; cytoplasm; microtubule organizing center; midbody; cytosol

Molecular Function: protein binding; transcription factor binding

Biological Process: transcription, DNA-dependent; in utero embryonic development; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; negative regulation of transcription factor activity; proteasomal ubiquitin-independent protein catabolic process; protein ubiquitination; regulation of epidermal cell differentiation