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  4. Recombinant Human Insulin-induced gene 1 protein (INSIG1)

Recombinant Human Insulin-induced gene 1 protein (INSIG1)

  • 中文名稱：
    人INSIG1重組蛋白
  • 貨號：
    CSB-CF011745HU
  • 規格：
  • 來源：
    in vitro E.coli expression system
  • 其他：

產品詳情

  • 基因名：
    INSIG1
  • Uniprot No.：
  • 別名：
    INSIG1; Insulin-induced gene 1 protein; INSIG-1
  • 種屬：
    Homo sapiens (Human)
  • 蛋白長度：
    Full length protein
  • 表達區域：
    1-277
  • 氨基酸序列
    MPRLHDHFWSCSCAHSARRRGPPRASAAGLAAKVGEMINVSVSGPSLLAAHGAPDADPAP RGRSAAMSGPEPGSPYPNTWHHRLLQRSLVLFSVGVVLALVLNLLQIQRNVTLFPEEVIA TIFSSAWWVPPCCGTAAAVVGLLYPCIDSHLGEPHKFKREWASVMRCIAVFVGINHASAK LDFANNVQLSLTLAALSLGLWWTFDRSRSGLGLGITIAFLATLITQFLVYNGVYQYTSPD FLYIRSWLPCIFFSGGVTVGNIGRQLAMGVPEKPHSD
    Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
    If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.
  • 蛋白標簽：
    N-terminal 10xHis-tagged
  • 產品提供形式：
    Liquid or Lyophilized powder
    Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
  • 緩沖液：
    Lyophilized from Tris/PBS-based buffer, 6% Trehalose, pH 8.0
  • 儲存條件：
    Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
  • 保質期：
    The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
    Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
  • 貨期：
    Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
    Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
  • 注意事項：
    Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
  • Datasheet & COA：
    Please contact us to get it.

產品評價

靶點詳情

  • 功能：
    Oxysterol-binding protein that mediates feedback control of cholesterol synthesis by controlling both endoplasmic reticulum to Golgi transport of SCAP and degradation of HMGCR. 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. Binds oxysterol, including 25-hydroxycholesterol, regulating interaction with SCAP and retention of the SCAP-SREBP complex in the endoplasmic reticulum. 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. Sterol deprivation or phosphorylation by PCK1 reduce oxysterol-binding, disrupting the interaction between INSIG1 and SCAP, thereby promoting Golgi transport of the SCAP-SREBP complex, followed by processing and nuclear translocation of SREBF1/SREBP1 and SREBF2/SREBP2. 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 ligases AMFR/gp78 and/or RNF139. Also regulates degradation of SOAT2/ACAT2 when the lipid levels are low: initiates the ubiquitin-mediated degradation of SOAT2/ACAT2 via recruitment of the ubiquitin ligases AMFR/gp78.
  • 基因功能參考文獻：
    1. INSIG1 variation may contribute to statin-induced changes in plasma triglycerides in a sex-specific manner. PMID: 26927283
    2. argue that precursor miR-122 molecules modulate polyadenylation site usage in Insig1 mRNAs, resulting in down-regulation of Insig1 protein abundance PMID: 28928276
    3. Our findings suggest that miR-92a may affect cholesterol metabolism by repressing insig1, resulting in raised intracellular cholesterol levels and Golgi volume and hence enhanced protein secretion. PMID: 28146316
    4. identified interaction of three genes in INSIG-SCAP-SREBP pathway on risk of obesity, revealing that these genes affect obesity more likely through a complex interaction pattern than single gene effect. PMID: 25028659
    5. Data show the essential role of PPARgamma and PPARgamma coactivator 1alpha (PGC-1alpha) in up-regulating Insig-1/2 expression, defining a mechanistic pathway triggered by CD36, and leading to cholesterol depletion in hepatocytes. PMID: 24371122
    6. Our results indicated that the dysregulation of INSIG1 and SREBF1 caused by ART were observed not only in the fetus but also in the placenta, primarily in the ICSI group PMID: 24484994
    7. No significant associations were found between polymorphisms of INSIG1 gene and metabolic syndrome; however, INSIG1 and INSIG2 interactions were found in the significant 3-locus and 4-locus gene-gene interaction models. PMID: 20877301
    8. Observational study of gene-disease association, gene-gene interaction, gene-environment interaction, and pharmacogenomic / toxicogenomic. (HuGE Navigator) PMID: 20877301
    9. From genetic association studies, SNPs in INSIG1 (including the promoter region) influence hypertriglyceridemia. PMID: 19965593
    10. Common variation in INSIG1 is unlikely to have a major effect on risk of type 2 diabetes risk in white Europeans. PMID: 20444954
    11. These data suggest that p97 recruits proteasomes to polytopic ER proteins, such as Insig-1, even before they are extracted from membranes. PMID: 19815544
    12. INSIG1 and p41 Arp2/3 complex (p41-Arc)reduced expression might be involved in gastric cancer development or progression PMID: 12115587
    13. INSIG-1 plays a role in regulating cholesterol concentration in human cells PMID: 12242342
    14. Data show that Insig-1 appears to play an essential role in the sterol-mediated trafficking of two proteins with sterol-sensing domains, HMG CoA reductase and SCAP. PMID: 12535518
    15. insig-1 expression restricts lipogenesis in mature adipocytes and blocks differentiation in preadipocytes PMID: 12869692
    16. data indicate that short segments at the N and C termini of insulin induced gene 1(Insig-1) face the cytosol with most of the protein buried within the membrane, forming six transmembrane segments PMID: 14660594
    17. nSREBPs are essential for high levels of lipid synthesis in the liver and indicate that Insig's modulate nSREBP levels by binding and retaining SCAP in the ER. PMID: 15085196
    18. Insig-1 has a role in feedback control of lipid synthesis in cultured cells PMID: 15247248
    19. Insig-1 has a role in activation of sterol regulatory element-binding protein induced by cellular stress PMID: 15304479
    20. Insig is required for sterol-mediated inhibition of Scap/SREBP binding to COPII proteins in vitro PMID: 15899885
    21. Results identify gp78 as the E3 that initiates sterol-accelerated degradation of reductase, and Insig-1 as a bridge between gp78/VCP and the reductase substrate. PMID: 16168377
    22. Under conditions of mild steroid depletion, the failure to ubiquinate Insig-1 causes a delay in release of the Scap/sterol regulatory element binding protein-2, but it does not abolish it. PMID: 16399501
    23. degradation of ubiquitinated Insigs is controlled by serine residues flanking the sites of ubiquitination PMID: 16549805
    24. These studies identify a aspartic acid residue that is crucial for the function of Insig1 and Insig2 proteins in regulating cholesterol homeostasis in mammalian cells. PMID: 16606821
    25. Insig-1 sterol-regulated degradation is mediated by the membrane-bound ubiquitin ligase gp78 PMID: 17043353
    26. Population studies demonstrate that INSIG1 plays a role in glucose homeostasis. PMID: 17106696
    27. Activation of CAR and PXR in mouse liver results in activation of Insig-1 along with reduced protein levels of the active form of sterol regulatory element binding protein 1 (Srebp-1). PMID: 18187584
    28. Unsaturated fatty acid-mediated stabilization of Insig-1 enhances the ability of sterols to inhibit proteolytic activation of SREBP-1, which activates transcription of genes involved in fatty acid synthesis PMID: 18835813
    29. The INSIG1 gene, not the INSIG2 gene, associated with coronary heart disease: tagSNPs and haplotype-based association study. PMID: 18989534
    30. Studies define Insig-1 and Insig-2 as the minimal requirement for sterol-accelerated degradation of the membrane domain of reductase. PMID: 19638338
    31. Observational study of gene-disease association and pharmacogenomic / toxicogenomic. (HuGE Navigator) PMID: 18195716

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  • 亞細胞定位：
    Endoplasmic reticulum membrane; Multi-pass membrane protein.
  • 蛋白家族：
    INSIG family
  • 組織特異性：
    Expressed in all tissues tested with highest expression in the liver.
  • 數據庫鏈接：

    HGNC: 6083

    OMIM: 602055

    KEGG: hsa:3638

    STRING: 9606.ENSP00000344741

    UniGene: Hs.520819



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