Human IRAK1 ELISA Kit (HUEB1740)- High Sensitivity

Product Name:	Human IRAK1 ELISA Kit
SKU:	HUEB1740
Size:	96T
Target:	Human IRAK1
Synonyms:	IRAK-1, IRAK
Assay Type:	Sandwich
Detection Method:	ELISA
Reactivity:	Human
Detection Range:	0.156-10ng/mL
Sensitivity:	0.078ng/mL

Intra CV:

4.8%

Inter CV:

8.3%

Linearity:

Sample	1:2	1:4	1:8	1:16
Serum(N=5)	99-109%	110-120%	92-102%	102-112%
EDTA Plasma(N=5)	90-100%	105-114%	80-90%	103-114%
Heparin Plasma(N=5)	105-114%	107-116%	85-95%	99-111%

Recovery:

Sample Type	Average(%)	Recovery Range(%)
Serum	98	92-104
Plasma	100	94-106

Function:

Serine/threonine-protein kinase that plays a critical role in initiating innate immune response against foreign pathogens. Involved in Toll-like receptor (TLR) and IL-1R signaling pathways. Is rapidly recruited by MYD88 to the receptor-signaling complex upon TLR activation. Association with MYD88 leads to IRAK1 phosphorylation by IRAK4 and subsequent autophosphorylation and kinase activation. Phosphorylates E3 ubiquitin ligases Pellino proteins (PELI1, PELI2 and PELI3) to promote pellino-mediated polyubiquitination of IRAK1. Then, the ubiquitin-binding domain of IKBKG/NEMO binds to polyubiquitinated IRAK1 bringing together the IRAK1-MAP3K7/TAK1-TRAF6 complex and the NEMO-IKKA-IKKB complex. In turn, MAP3K7/TAK1 activates IKKs (CHUK/IKKA and IKBKB/IKKB) leading to NF-kappa-B nuclear translocation and activation. Alternatively, phosphorylates TIRAP to promote its ubiquitination and subsequent degradation. Phosphorylates the interferon regulatory factor 7 (IRF7) to induce its activation and translocation to the nucleus, resulting in transcriptional activation of type I IFN genes, which drive the cell in an antiviral state. When sumoylated, translocates to the nucleus and phosphorylates STAT3.

Uniprot:	P51617
Sample Type:	Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids
Specificity:	Natural and recombinant human Interleukin-1 receptor-associated kinase 1
Sub Unit:	Homodimer (By similarity). Forms a complex with TRAF6, PELI1, IRAK4 and MYD88 (PubMed:16951688). Direct binding of SMAD6 to PELI1 prevents complex formation and hence negatively regulates IL1R-TLR signaling and eventually NF-kappa-B-mediated gene expression (PubMed:16951688). The TRAF6-PELI1-IRAK4-MYD88 complex recruits MAP3K7/TAK1, TAB1 and TAB2 to mediate NF-kappa-B activation (PubMed:16951688). Interaction with MYD88 recruits IRAK1 to the stimulated receptor complex (PubMed:9430229). Interacts with TOLLIP; this interaction occurs in the cytosol prior to receptor activation (PubMed:10854325). Interacts with IL1RL1 (PubMed:16286016). Interacts with PELI1 and TRAF6 (PubMed:12496252). Interacts (when polyubiquitinated) with IKBKG/NEMO (PubMed:18347055). Interacts with RSAD2/viperin (By similarity). Interacts with IRAK1BP1 (By similarity). Interacts with PELI2 (By similarity). Interacts with ZC3H12A; this interaction increases the interaction between ZC3H12A and IKBKB/IKKB (By similarity). Interacts with IRAK4 (PubMed:11960013). Interacts with PELI3 (PubMed:12874243).
Research Area:	Immunology
Subcellular Location:	Cytoplasm Nucleus Lipid droplet Translocates to the nucleus when sumoylated. RSAD2/viperin recruits it to the lipid droplet (By similarity).
Storage:	Please see kit components below for exact storage details
Note:	For research use only

UniProt Protein Function:	IRAK1: a TKL kinase of the IRAK family. Involved in Toll/IL-1 signaling. One of two putative serine/threonine kinases that become associated with the interleukin-1 receptor following IL-1 engagement, triggering intracellular signaling cascades leading to transcriptional up-regulation and mRNA stabilization. Extensively phosphorylated after its association with IL1-R-1. Polyubiquitinated; after cell stimulation with IL-1-beta. Polyubiquitination occurs with polyubiquitin chains linked through 'Lys-63'. Partially responsible for IL1-induced upregulation of the transcription factor NF-kappa B. Three isoforms of the human protein and produced by alternative splicing. Isoform 1 binds rapidly but is then degraded allowing isoform 2 to mediate a slower, more sustained response to the cytokine. Isoform 2 is inactive suggesting that the kinase activity of this enzyme is not required for IL-1 signaling. Once phosphorylated, IRAK1 recruits the adapter protein PELI1. Isoform 1 and isoform 2 are ubiquitously expressed in all tissues examined, with isoform 1 being more strongly expressed than isoform 2.
UniProt Protein Details:	Protein type:Protein kinase, TKL; EC 2.7.11.1; Protein kinase, Ser/Thr (non-receptor); Kinase, protein; TKL group; IRAK family Chromosomal Location of Human Ortholog: Xq28 Cellular Component: cytoplasm; cytosol; endosome membrane; lipid particle; nucleus; plasma membrane Molecular Function:kinase activity; NF-kappaB-inducing kinase activity; protein binding; protein heterodimerization activity; protein homodimerization activity; protein kinase activity; protein serine/threonine kinase activity Biological Process: activation of MAPK activity; activation of NF-kappaB transcription factor; activation of NF-kappaB-inducing kinase; inhibition of NF-kappaB transcription factor; JNK cascade; lipopolysaccharide-mediated signaling pathway; MyD88-dependent toll-like receptor signaling pathway; negative regulation of apoptosis; positive regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of interferon type I production; positive regulation of MAP kinase activity; protein amino acid autophosphorylation; protein amino acid phosphorylation; protein oligomerization; regulation of cytokine and chemokine mediated signaling pathway; response to lipopolysaccharide; toll-like receptor 2 signaling pathway; toll-like receptor 4 signaling pathway; toll-like receptor 9 signaling pathway; toll-like receptor signaling pathway
NCBI Summary:	This gene encodes the interleukin-1 receptor-associated kinase 1, one of two putative serine/threonine kinases that become associated with the interleukin-1 receptor (IL1R) upon stimulation. This gene is partially responsible for IL1-induced upregulation of the transcription factor NF-kappa B. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
UniProt Code:	P51617
NCBI GenInfo Identifier:	8928535
NCBI Gene ID:	3654
NCBI Accession:	P51617.2
UniProt Secondary Accession:	P51617,Q7Z5V4, Q96C06, Q96RL2, D3DWW3, D3DWW4,
UniProt Related Accession:	P51617
Molecular Weight:	68,022 Da
NCBI Full Name:	Interleukin-1 receptor-associated kinase 1
NCBI Synonym Full Names:	interleukin 1 receptor associated kinase 1
NCBI Official Symbol:	IRAK1
NCBI Official Synonym Symbols:	IRAK; pelle
NCBI Protein Information:	interleukin-1 receptor-associated kinase 1
UniProt Protein Name:	Interleukin-1 receptor-associated kinase 1
Protein Family:	Interleukin-1 receptor-associated kinase
UniProt Gene Name:	IRAK1
UniProt Entry Name:	IRAK1_HUMAN

Component	Quantity (96 Assays)	Storage
ELISA Microplate (Dismountable)	8×12 strips	-20°C
Lyophilized Standard	2	-20°C
Sample Diluent	20ml	-20°C
Assay Diluent A	10mL	-20°C
Assay Diluent B	10mL	-20°C
Detection Reagent A	120µL	-20°C
Detection Reagent B	120µL	-20°C
Wash Buffer	30mL	4°C
Substrate	10mL	4°C
Stop Solution	10mL	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

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

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.

Step
1.	Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2.	Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3.	Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4.	Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5.	Repeat the wash process for five times as conducted in step 3.
6.	Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7.	Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8.	Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9.	After experiment, store all reagents according to the specified storage temperature respectively until their expiry.

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.

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