Rabbit KEAP1 Polyclonal Antibody | anti-KEAP1 antibody

KEAP1 Antibody

Cat. Num. AAA9414027

• Gene Names: KEAP1; INrf2; KLHL19
• Reactivity: Human, Mouse, Rat
• Applications: Western Blot, Immunohistochemistry
• Purity: Antibodies were purified by affinity purification using immunogen.
• Synonyms: KEAP1; Polyclonal Antibody; KEAP1 Antibody; INrf2; KIAA0132; KLHL19; MGC10630; MGC1114; anti-KEAP1 antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat
• Clonality: Polyclonal
• Specificity: The antibody detects endogenous level of total KEAP1 protein.
• Purity/Purification: Antibodies were purified by affinity purification using immunogen.
• Form/Format: Supplied at 1.0mg/mL in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1.0 mg/ml (varies by lot)
• Sequence Length: 624

• Applicable Applications for anti-KEAP1 antibody: Western Blot (WB), Immunohistochemistry (IHC)
• Application Notes: Western blotting: 1:500 - 1:2000; Immunohistochemistry: 1:50 - 1:100
• Immunogen Type: Recombinant Protein
• Immunogen Description: Recombinant protein of human KEAP1.
• Target Name: KEAP1
• Preparation and Storage: Store at -20 degree C

Western Blot (WB)

(Western blot analysis of extracts of HepG2 cell lines, using KEAP1 antibody.)

Related Product Information for anti-KEAP1 antibody

The nuclear factor-like 2 (NRF2) transcriptional activator binds antioxidant response elements (ARE) of target gene promoter regions to regulate expression of oxidative stress response genes. Under basal conditions, the NRF2 inhibitor INrf2 (also called KEAP1) binds and retains NRF2 in the cytoplasm where it can be targeted for ubiquitin-mediated degradation (1). Small amounts of constitutive nuclear NRF2 maintains cellular homeostasis through regulation of basal expression of antioxidant response genes. Following oxidative or electrophilic stress, KEAP1 releases NRF2, thereby allowing the activator to translocate to the nucleus and bind to ARE-containing genes (2). The coordinated action of NRF2 and other transcription factors mediates the response to oxidative stress (3). Altered expression of NRF2 is associated with chronic obstructive pulmonary disease (COPD) (4). NRF2 activity in lung cancer cell lines directly correlates with cell proliferation rates, and inhibition of NRF2 expression by siRNA enhances anti-cancer drug-induced apoptosis (5).

Product Categories/Family for anti-KEAP1 antibody

Total protein Ab

NCBI and Uniprot Product Information

• NCBI GI #: 22027642
• NCBI GeneID: 9817
• NCBI Accession #: NP_036421.2
• NCBI GenBank Nucleotide #: NM_012289.3
• UniProt Accession #: Q14145; Q6LEP0; Q8WTX1; Q9BPY9; B3KPD5
• Molecular Weight: 69,666 Da
• 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: Motility/polarity/chemotaxis; Ubiquitin conjugating system; Endoplasmic reticulum; Transcription regulation

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