Mouse INSR-Beta ELISA Kit (MOFI00946)- High Sensitivity

Product Name:	Mouse INSR-Beta / Insulin Receptor Beta Subunit ELISA Kit
Product Code:	MOFI00946
Size:	96 Assays
Alias:	INSR-beta
Detection Method:	Sandwich ELISA
Application:	This immunoassay kit allows for the in vitro quantitative determination of Mouse INSR-beta concentrations in serum plasma and other biological fluids.
Sensitivity:	0.563ng/ml
Range:	0.938-60ng/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Mouse INSR-beta and the recovery rates were calculated by comparing the measured value to the expected amount of Mouse INSR-beta in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	85-105	96
EDTA plasma(n=5)	87-105	97
UFH plasma(n=5)	88-101	95

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Mouse INSR-beta and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample	1:2	1:4	1:8
serum(n=5)	86-97%	85-103%	90-104%
EDTA plasma(n=5)	83-98%	83-101%	87-100%
UFH plasma(n=5)	81-98%	82-93%	81-91%

Intra Assay:

CV <8%

Inter Assay:

CV <10%

Component	Quantity	Storage
ELISA Microplate (Dismountable)	8×12 strips	4°C for 6 months
Lyophilized Standard	2	4°C/-20°C
Sample/Standard Dilution Buffer	20ml	4°C
Biotin-labeled Antibody(Concentrated)	120ul	4°C (Protect from light)
Antibody Dilution Buffer	10ml	4°C
HRP-Streptavidin Conjugate(SABC)	120ul	4°C (Protect from light)
SABC Dilution Buffer	10ml	4°C
TMB Substrate	10ml	4°C (Protect from light)
Stop Solution	10ml	4°C
Wash Buffer(25X)	30ml	4°C
Plate Sealer	5	-

Other materials and equipment required:

Microplate reader with 450 nm wavelength filter
Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
Incubator
Deionized or distilled water
Absorbent paper
Buffer resevoir

Uniprot

P15208

UniProt Protein Function:	INSR: a receptor tyrosine kinase that 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 phosphotyrosines 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 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. In addition to binding insulin, the insulin receptor can bind insulin-like growth factors (IGFI and IGFII). The holoenzyme is cleaved into two chains, the alpha and beta subunits. The active complex is a tetramer containing 2 alpha and 2 beta chains linked by disulfide bonds. The alpha chains constitute the ligand- binding domain, while the beta chains carry the kinase domain. Interacts with SORBS1 but dissociates from it following insulin stimulation. Familial mutations associated with insulin resistant diabetes, acanthosis nigricans, pineal hyperplasia, and polycystic ovary syndrome. SNP variants may be associated with polycystic ovary syndrome, atypical migraine and diabetic hyperlipidemia. Mutations also cause leprechaunism, a severe insulin resistance syndrome causing growth retardation and death in early infancy. Two isoforms of the human protein are produced by alternative splicing. The Short isoform has a higher affinity for insulin than the longer. 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. Overexpressed in several tumors, including breast, colon, lung, ovary, and thyroid carcinomas. Protein type: Kinase, protein; Protein kinase, TK; Membrane protein, integral; EC 2.7.10.1; Protein kinase, tyrosine (receptor); TK group; InsR family Cellular Component: caveola; cell soma; cytosol; endosome; integral to plasma membrane; intracellular membrane-bound organelle; membrane; nucleus; plasma membrane; receptor complex; synapse Molecular Function: 3-phosphoinositide-dependent protein kinase binding; ATP binding; GTP binding; insulin binding; insulin receptor activity; insulin receptor substrate binding; insulin-like growth factor I binding; insulin-like growth factor II binding; insulin-like growth factor receptor binding; lipoic acid binding; phosphoinositide 3-kinase binding; protein binding; protein complex binding; protein domain specific binding; protein kinase activity; protein kinase binding; protein phosphatase binding; protein-tyrosine kinase activity; PTB domain binding; receptor signaling protein tyrosine kinase activity Biological Process: activation of MAPK activity; activation of protein kinase activity; activation of protein kinase B; adrenal gland development; cellular response to insulin stimulus; epidermis development; exocrine pancreas development; G-protein coupled receptor protein signaling pathway; glucose homeostasis; heart morphogenesis; insulin receptor signaling pathway; male gonad development; male sex determination; negative regulation of protein amino acid phosphorylation; negative regulation of transporter activity; organ morphogenesis; peptidyl-tyrosine phosphorylation; positive regulation of cell migration; positive regulation of cell proliferation; positive regulation of developmental growth; positive regulation of DNA replication; positive regulation of glucose import; positive regulation of glycogen biosynthetic process; positive regulation of glycolysis; positive regulation of MAPKKK cascade; positive regulation of meiotic cell cycle; positive regulation of mitosis; positive regulation of nitric oxide biosynthetic process; positive regulation of phosphorylation; positive regulation of protein amino acid phosphorylation; positive regulation of protein kinase B signaling cascade; positive regulation of transcription, DNA-dependent; protein amino acid autophosphorylation; protein amino acid phosphorylation; protein heterotetramerization; regulation of embryonic development; regulation of hydrogen peroxide metabolic process; regulation of transcription, DNA-dependent; transformation of host cell by virus
UniProt Protein Details:
NCBI Summary:
UniProt Code:	P15208
NCBI GenInfo Identifier:	408360149
NCBI Gene ID:	16337
NCBI Accession:	P15208.2
UniProt Secondary Accession:	P15208,F8VPU4
UniProt Related Accession:	P15208
Molecular Weight:	155,610 Da
NCBI Full Name:	Insulin receptor
NCBI Synonym Full Names:	insulin receptor
NCBI Official Symbol:	Insr
NCBI Official Synonym Symbols:	IR; IR-A; IR-B; CD220; 4932439J01Rik; D630014A15Rik
NCBI Protein Information:	insulin receptor
UniProt Protein Name:	Insulin receptor
UniProt Synonym Protein Names:	CD_antigen: CD220
Protein Family:	Insulin receptor
UniProt Gene Name:	Insr
UniProt Entry Name:	INSR_MOUSE

*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Step	Procedure
1.	Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells!
2.	Aliquot 0.1ml standard solutions into the standard wells.
3.	Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well.
4.	Add 0.1 ml of properly diluted sample (Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells.
5.	Seal the plate with a cover and incubate at 37 °C for 90 min.
6.	Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2.
7.	Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall.
8.	Seal the plate with a cover and incubate at 37°C for 60 min.
9.	Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash.
10.	Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min.
11.	Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min.
12.	Add 90 µL of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color.
13.	Add 50 µL of Stop solution into each well and mix thoroughly. The color changes into yellow immediately.
14.	Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution.

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample Type	Protocol
Serum:	If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Plasma:	Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid:	Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant:	Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell lysates:	Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20°C.
Tissue homogenates:	The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Tissue lysates:	Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk:	Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.