- Featured Product
- KD/KO Validated
KEAP1 Polyclonal antibody
KEAP1 Polyclonal Antibody for WB, IHC, IF/ICC, IP, ELISA
Host / Isotype
Rabbit / IgG
Reactivity
human, mouse and More (6)
Applications
WB, IHC, IF/ICC, IP, ELISA and More (3)
Conjugate
Unconjugated
688
验证数据展示
经过测试的应用
| Positive WB detected in | HEK-293 cells, HepG2 cells, Jurkat cells, MCF-7 cells, HeLa cells |
| Positive IP detected in | mouse skeletal muscle tissue |
| Positive IHC detected in | human lung cancer tissue, human breast cancer tissue, human skeletal muscle tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
| Positive IF/ICC detected in | U2OS cells, HepG2 cells |
推荐稀释比
| Application | Dilution |
|---|---|
| Western Blot (WB) | WB : 1:2000-1:10000 |
| Immunoprecipitation (IP) | IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate |
| Immunohistochemistry (IHC) | IHC : 1:50-1:500 |
| Immunofluorescence (IF)/ICC | IF/ICC : 1:50-1:500 |
| It is recommended that this reagent should be titrated in each testing system to obtain optimal results. | |
| Sample-dependent, Check data in validation data gallery. | |
产品信息
10503-2-AP targets KEAP1 in WB, IHC, IF/ICC, IP, CoIP, RIP, ELISA applications and shows reactivity with human, mouse samples.
| Tested Applications | WB, IHC, IF/ICC, IP, ELISA Application Description |
| Cited Applications | WB, IHC, IF, IP, CoIP, RIP |
| Tested Reactivity | human, mouse |
| Cited Reactivity | human, mouse, rat, pig, monkey, chicken, bovine, yellow catfish |
| Immunogen | KEAP1 fusion protein Ag0779 种属同源性预测 |
| Host / Isotype | Rabbit / IgG |
| Class | Polyclonal |
| Type | Antibody |
| Full Name | kelch-like ECH-associated protein 1 |
| Synonyms | KLHL19, KIAA0132, Kelch-like ECH-associated protein 1, KEAP 1 |
| Calculated Molecular Weight | 624 aa, 70 kDa |
| Observed Molecular Weight | 55~70 kDa |
| GenBank Accession Number | BC002930 |
| Gene Symbol | KEAP1 |
| Gene ID (NCBI) | 9817 |
| RRID | AB_2132625 |
| Conjugate | Unconjugated |
| Form | Liquid |
| Purification Method | Antigen affinity purification |
| UNIPROT ID | Q14145 |
| Storage Buffer | PBS with 0.02% sodium azide and 50% glycerol pH 7.3. |
| Storage Conditions | Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. |
背景介绍
Kelch-like ECH-associated protein 1 (KEAP1) is a negative regulator of nuclear factor erythroid 2-related factor 2 (Nrf2), a transcription factor governing the antioxidant response.
What is the molecular weight of KEAP1 protein? Are there any isoforms of KEAP1?
The molecular weight of KEAP1 protein is 70 kDa. The KEAP1 gene gives rise only to protein isoforms, but mutations of KEAP1 protein have been found in various cancer types.
What is the subcellular localization of KEAP1?
KEAP1 resides in the cytoplasm, where it binds to Nrf2, targeting it for degradation and preventing translocation of Nrf2 to the nucleus.
How does KEAP1 control Nrf2 levels? Is KEAP1 post-translationally modified?
KEAP1 is rich in reactive cysteine residues, whose thiol groups play a role in binding to CUL3 and the polyubiquitination of Nrf2, which leads to degradation of Nrf2 via the proteasome system. During oxidative stress, electrophiles and reactive oxygen species (ROS) modify the KEAP1 thiol groups, reducing the affinity of KEAP1 to CUL3 and the stabilization of Nrf2. Nrf2 then translocates to the nucleus, where it binds to the antioxidant responsive elements (AREs) and induces the expression of antioxidant proteins (PMID: 16354693).
How to measure oxidative stress using KEAP1 and Nrf2 proteins as a readout
Under basal conditions (unstressed cells), a detectable KEAP1 protein level is observed. Oxidative stress modifies KEAP1 protein activity by increasing the Nrf2 protein levels. This can be measured, for example, using western blotting (PMID: 27697860). KEAP1 protein levels are not altered by oxidative stress.
What is the role of the KEAP1-Nrf2 pathway in health and disease?
The KEAP-Nrf2 pathway plays a vital role in redox homeostasis and cryoprotection. Inhibition of KEAP1 activity leads to the activation of Nrf2 and increase the response to oxidative stress and anti-inflammatory effects (PMID: 29717933). The activation of Nrf2 can be beneficial in the case of metabolic diseases, such as diabetes, as well as neurodegenerative diseases such as Parkinson's and Alzheimer's diseases. However, the increased activation of Nrf2 is also known to promote tumor growth and metastasis. Mutations in both KEAP1 and Nrf2 were found in various solid tumor types.
实验方案
| Product Specific Protocols | |
|---|---|
| WB protocol for KEAP1 antibody 10503-2-AP | Download protocol |
| IHC protocol for KEAP1 antibody 10503-2-AP | Download protocol |
| IF protocol for KEAP1 antibody 10503-2-AP | Download protocol |
| IP protocol for KEAP1 antibody 10503-2-AP | Download protocol |
| Standard Protocols | |
|---|---|
| Click here to view our Standard Protocols |
发表文章
| Species | Application | Title |
|---|---|---|
Nature KLHL22 activates amino-acid-dependent mTORC1 signalling to promote tumorigenesis and ageing.
| ||
Cell Systematic discovery of mutation-directed neo-protein-protein interactions in cancer.
| ||
Cell Nrf2 Activation Promotes Lung Cancer Metastasis by Inhibiting the Degradation of Bach1. | ||
Cancer Cell iASPP Is an Antioxidative Factor and Drives Cancer Growth and Drug Resistance by Competing with Nrf2 for Keap1 Binding.
|
