Insig2 Rabbit pAb
Insig2 Rabbit pAb
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- 背景知识
Application
| WB |
|---|---|
| Primary Accession | Q9Y5U4 |
| Reactivity | Mouse |
| Predicted | Human, Rat, Dog, Pig, Horse, Sheep |
| Host | Rabbit |
| Clonality | Polyclonal |
| Calculated MW | 24778 Da |
| Physical State | Liquid |
| Immunogen | KLH conjugated synthetic peptide derived from human Insig2 |
| Epitope Specificity | 65-160/225 |
| Isotype | IgG |
| Purity | affinity purified by Protein A |
| Buffer | 0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol. |
| SUBCELLULAR LOCATION | Endoplasmic reticulum membrane; Multi-pass membrane protein. |
| SIMILARITY | Belongs to the INSIG family. |
| SUBUNIT | Binds to the SCAP-SREBF2 complex only in the presence of sterols. Interacts with RNF139. |
| Important Note | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. |
| Background Descriptions | Insig2 is highly similar to the protein product encoded by gene Insig1. Both Insig1 protein and Insig2 protein are endoplasmic reticulum proteins that block the processing of sterol regulatory element binding proteins (SREBPs) by binding to SREBP cleavage-activating protein (SCAP), and thus prevent SCAP from escorting SREBPs to the Golgi. |
| Gene ID | 51141 |
|---|---|
| Other Names | Insulin-induced gene 2 protein, INSIG-2, INSIG2 {ECO:0000303|PubMed:12242332, ECO:0000312|HGNC:HGNC:20452} |
| Dilution | WB=1:500-2000 |
| Storage | Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C. |
| Name | INSIG2 {ECO:0000303|PubMed:12242332, ECO:0000312|HGNC:HGNC:20452} |
|---|---|
| Function | Oxysterol-binding protein that mediates feedback control of cholesterol synthesis by controlling both endoplasmic reticulum to Golgi transport of SCAP and degradation of HMGCR (PubMed:12242332, PubMed:16606821, PubMed:32322062). Acts as a negative regulator of cholesterol biosynthesis by mediating the retention of the SCAP-SREBP complex in the endoplasmic reticulum, thereby blocking the processing of sterol regulatory element-binding proteins (SREBPs) SREBF1/SREBP1 and SREBF2/SREBP2 (PubMed:32322062). Binds oxysterol, including 22- hydroxycholesterol, 24-hydroxycholesterol, 25-hydroxycholesterol and 27-hydroxycholesterol, regulating interaction with SCAP and retention of the SCAP-SREBP complex in the endoplasmic reticulum (PubMed:17428920, PubMed:26160948, PubMed:32322062). In presence of oxysterol, interacts with SCAP, retaining the SCAP-SREBP complex in the endoplasmic reticulum, thereby preventing SCAP from escorting SREBF1/SREBP1 and SREBF2/SREBP2 to the Golgi (PubMed:32322062). Sterol deprivation or phosphorylation by PCK1 reduce oxysterol-binding, disrupting the interaction between INSIG2 and SCAP, thereby promoting Golgi transport of the SCAP-SREBP complex, followed by processing and nuclear translocation of SREBF1/SREBP1 and SREBF2/SREBP2 (PubMed:32322062). Also regulates cholesterol synthesis by regulating degradation of HMGCR: initiates the sterol-mediated ubiquitin-mediated endoplasmic reticulum-associated degradation (ERAD) of HMGCR via recruitment of the reductase to the ubiquitin ligase RNF139 (PubMed:16606821, PubMed:22143767). |
| Cellular Location | Endoplasmic reticulum membrane; Multi-pass membrane protein |
Research Areas
For Research Use Only. Not For Use In Diagnostic Procedures.
Application Protocols
Provided below are standard protocols that you may find useful for product applications.
BACKGROUND
Insig2 is highly similar to the protein product encoded by gene Insig1. Both Insig1 protein and Insig2 protein are endoplasmic reticulum proteins that block the processing of sterol regulatory element binding proteins (SREBPs) by binding to SREBP cleavage-activating protein (SCAP), and thus prevent SCAP from escorting SREBPs to the Golgi.
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