• Human INSR (Insulin receptor) CLIA Kit (STJC0000266)

Human INSR (Insulin receptor) CLIA Kit (STJC0000266)

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STJC0000266

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Applications: CLIA
Reactivity: Human
Note: FOR SCIENTIFIC EDUCATIONAL RESEARCH USE ONLY (RUO). MUST NOT BE USED IN DIAGNOSTIC OR OTHER MEDICAL APPLICATIONS.
Sensitivity: 0.19ng/mL
Detection Limit: 0.31~20ng/mL
Short Description: This human INSR kit is a highly sensitive in-vitro chemiluminescent immunoassay for the measurement of trace amounts of analytes.
Storage Instruction: If unopened the kit may be stored at 2-8°C for up to 1 month. If the kit will not be used within 1 month, store the components separately, according to the component table in the manual.
Assay Time: 3.5h
Detection: Chemiluminescence
Gene Symbol: INSR
Gene ID: 3643
Uniprot ID: INSR_HUMAN
Specificity: This kit recognizes Human INSR in samples. No significant cross-reactivity or interference between Human INSR and analogues was observed.
Sample Type: Serum, plasma and other biological fluids
Tissue Specificity Isoform Long and isoform Short are predominantly expressed in tissue targets of insulin metabolic effects: liver, adipose tissue and skeletal muscle but are also expressed in the peripheral nerve, kidney, pulmonary alveoli, pancreatic acini, placenta vascular endothelium, fibroblasts, monocytes, granulocytes, erythrocytes and skin. Isoform Short is preferentially expressed in fetal cells such as fetal fibroblasts, muscle, liver and kidney. Found as a hybrid receptor with IGF1R in muscle, heart, kidney, adipose tissue, skeletal muscle, hepatoma, fibroblasts, spleen and placenta (at protein level). Overexpressed in several tumors, including breast, colon, lung, ovary, and thyroid carcinomas.
Post Translational Modifications After being transported from the endoplasmic reticulum to the Golgi apparatus, the single glycosylated precursor is further glycosylated and then cleaved, followed by its transport to the plasma membrane. Autophosphorylated on tyrosine residues in response to insulin. Phosphorylation of Tyr-999 is required for binding to IRS1, SHC1 and STAT5B. Dephosphorylated by PTPRE at Tyr-999, Tyr-1185, Tyr-1189 and Tyr-1190. Dephosphorylated by PTPRF and PTPN1. Dephosphorylated by PTPN2.down-regulates insulin-induced signaling.
Function Receptor tyrosine kinase which mediates the pleiotropic actions of insulin. Binding of insulin leads to phosphorylation of several intracellular substrates, including, insulin receptor substrates (IRS1, 2, 3, 4), SHC, GAB1, CBL and other signaling intermediates. Each of these phosphorylated proteins serve as docking proteins for other signaling proteins that contain Src-homology-2 domains (SH2 domain) that specifically recognize different phosphotyrosine residues, including the p85 regulatory subunit of PI3K and SHP2. Phosphorylation of IRSs proteins lead to the activation of two main signaling pathways: the PI3K-AKT/PKB pathway, which is responsible for most of the metabolic actions of insulin, and the Ras-MAPK pathway, which regulates expression of some genes and cooperates with the PI3K pathway to control cell growth and differentiation. Binding of the SH2 domains of PI3K to phosphotyrosines on IRS1 leads to the activation of PI3K and the generation of phosphatidylinositol-(3, 4, 5)-triphosphate (PIP3), a lipid second messenger, which activates several PIP3-dependent serine/threonine kinases, such as PDPK1 and subsequently AKT/PKB. The net effect of this pathway is to produce a translocation of the glucose transporter SLC2A4/GLUT4 from cytoplasmic vesicles to the cell membrane to facilitate glucose transport. Moreover, upon insulin stimulation, activated AKT/PKB is responsible for: anti-apoptotic effect of insulin by inducing phosphorylation of BAD.regulates the expression of gluconeogenic and lipogenic enzymes by controlling the activity of the winged helix or forkhead (FOX) class of transcription factors. Another pathway regulated by PI3K-AKT/PKB activation is mTORC1 signaling pathway which regulates cell growth and metabolism and integrates signals from insulin. AKT mediates insulin-stimulated protein synthesis by phosphorylating TSC2 thereby activating mTORC1 pathway. The Ras/RAF/MAP2K/MAPK pathway is mainly involved in mediating cell growth, survival and cellular differentiation of insulin. Phosphorylated IRS1 recruits GRB2/SOS complex, which triggers the activation of the Ras/RAF/MAP2K/MAPK pathway. In addition to binding insulin, the insulin receptor can bind insulin-like growth factors (IGFI and IGFII). Isoform Short has a higher affinity for IGFII binding. When present in a hybrid receptor with IGF1R, binds IGF1. PubMed:12138094 shows that hybrid receptors composed of IGF1R and INSR isoform Long are activated with a high affinity by IGF1, with low affinity by IGF2 and not significantly activated by insulin, and that hybrid receptors composed of IGF1R and INSR isoform Short are activated by IGF1, IGF2 and insulin. In contrast, PubMed:16831875 shows that hybrid receptors composed of IGF1R and INSR isoform Long and hybrid receptors composed of IGF1R and INSR isoform Short have similar binding characteristics, both bind IGF1 and have a low affinity for insulin. In adipocytes, inhibits lipolysis.
Protein Name Insulin Receptor
Ir
Cd Antigen Cd220 Cleaved Into - Insulin Receptor Subunit Alpha - Insulin Receptor Subunit Beta
Database Links Reactome: R-HSA-6811558
Reactome: R-HSA-74713
Reactome: R-HSA-74749
Reactome: R-HSA-74751
Reactome: R-HSA-74752
Reactome: R-HSA-77387
Cellular Localisation Cell Membrane
Single-Pass Type I Membrane Protein
Late Endosome
Lysosome
Binding Of Insulin To Insr Induces Internalization And Lysosomal Degradation Of The Receptor
A Means For Down-Regulating This Signaling Pathway After Stimulation
In The Presence Of Sorl1
Internalized Insr Molecules Are Redirected Back To The Cell Surface
Thereby Preventing Their Lysosomal Catabolism And Strengthening Insulin Signal Reception
Alternative CLIA Names Insulin Receptor CLIA kit
Ir CLIA kit
Cd Antigen Cd220 Cleaved Into - Insulin Receptor Subunit Alpha - Insulin Receptor Subunit Beta CLIA kit
INSR CLIA kit
Specificity This kit recognizes Human INSR in samples. No significant cross-reactivity or interference between Human INSR and analogues was observed.
Reproducibility Both intra-CV and inter-CV are

Information sourced from Uniprot.org


Item Specifications Storage
Micro CLIA Plate (Dismountable) 96T: 8 wells ×12 strips strips -20℃, 6 months
Reference Standard 96T: 2 vials 48T: 1 vial -20℃, 6 months
Concentrated Biotinylated Detection Ab (100×) 96T: 1 vial, 120 μL 60 μL -20℃, 6 months
Concentrated HRP Conjugate (100×) 96T: 1 vial, 120 μL 60 μL -20℃ (Protect from light), 6 months
Reference Standard & Sample Diluent 1 vial, 20 mL 2-8°C, 6 months
Biotinylated Detection Ab Diluent 1 vial, 14 mL 2-8°C, 6 months
HRP Conjugate Diluent 1 vial, 14 mL 2-8°C, 6 months
Concentrated Wash Buffer (25×) 1 vial, 30 mL 2-8°C, 6 months
Substrate Reagent A 1 vial, 5 mL 2-8℃ (Protect from light)
Substrate Reagent B 1 vial, 5 mL 2-8℃ (Protect from light)
Plate Sealer 5 pieces
Manual 1 copy
Certificate of Analysis 1 copy

Sample Type Range (%) Average Recovery (%)
Serum(n=8) 100-117 107
EDTA plasma(n=8) 96-113 103
Cell culture media(n=8) 98-116 106

Intra-assay Precision Intra-assay Precision Intra-assay Precision Inter-assay Precision Inter-assay Precision Inter-assay Precision
Sample 1.00 2.00 3.00 1.00 2.00 3.00
n 20.00 20.00 20.00 20.00 20.00 20.00
Mean (ng/mL) 0.97 2.20 8.26 1.05 2.25 7.93
Standard deviation 0.12 0.20 0.81 0.11 0.20 0.64
CV (%) 12.37 9.09 9.81 10.48 8.89 8.07
12 months for antibodies. 6 months for ELISA Kits. Please see website T&Cs for further guidance