Human TrkA ELISA Kit (HUFI00276)- High Sensitivity

Product Name:	Human TrkA ELISA Kit
Product Code:	HUFI00276
Size:	96 Assays
Alias:	TrkA, NTRK1, NTRK-1, DKFZp781I14186, EC 2.7.10, EC 2.7.10.1, MTChigh affinity nerve growth factor receptor, Neurotrophic tyrosine kinase receptor type 1, neurotrophic tyrosine kinase, receptor, type 1, p140-TrkA, TRK1-transforming tyrosine kinase protein, Trk-A, TRKAOncogene TRK, TRKTRK1, tyrosine kinase receptor A
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human TrkA/NTRK1 concentrations in serum plasma and other biological fluids.
Sensitivity:	46.875pg/ml
Range:	78.125-5000pg/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Human TrkA/NTRK1 and the recovery rates were calculated by comparing the measured value to the expected amount of Human TrkA/NTRK1 in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	89-104	96
EDTA plasma(n=5)	90-103	98
UFH plasma(n=5)	89-103	97

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human TrkA/NTRK1 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)	88-102%	85-100%	87-99%
EDTA plasma(n=5)	88-95%	82-100%	82-101%
UFH plasma(n=5)	88-97%	80-95%	90-99%

CV(%):

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

P04629

UniProt Protein Function:	TrkA: a receptor tyrosine kinase of the Trk family. High affinity receptor for nerve growth factor, neurotrophin-3 and neurotrophin-4/5 but not brain- derived neurotrophic factor. Known substrates include Shc, PI-3K, and PLC-gamma-1. Has a crucial role in the development and function of the nociceptive reception system. Two splice variant isoforms have been described.
UniProt Protein Details:	Protein type:Protein kinase, TK; Oncoprotein; EC 2.7.10.1; Membrane protein, integral; Protein kinase, tyrosine (receptor); Kinase, protein; TK group; Trk family Chromosomal Location of Human Ortholog: 1q21-q22 Cellular Component: protein complex; cell surface; integral to plasma membrane; late endosome membrane; dendrite; early endosome; cell soma; early endosome membrane; axon; late endosome; plasma membrane; cytoplasmic vesicle; receptor complex; endosome Molecular Function:neurotrophin p75 receptor binding; neurotrophin binding; protein binding; nerve growth factor receptor activity; protein homodimerization activity; ephrin receptor binding; nerve growth factor binding; transmembrane receptor protein tyrosine kinase activity; ATP binding Biological Process: circadian rhythm; axon guidance; mechanoreceptor differentiation; peptidyl-tyrosine phosphorylation; activation of MAPKK activity; nerve growth factor receptor signaling pathway; protein amino acid autophosphorylation; positive regulation of synaptic transmission, glutamatergic; protein amino acid phosphorylation; olfactory nerve development; activation of NF-kappaB transcription factor; negative regulation of cell proliferation; sympathetic nervous system development; response to radiation; learning and/or memory; small GTPase mediated signal transduction; response to axon injury; negative regulation of neuron apoptosis; response to electrical stimulus; detection of temperature stimulus involved in sensory perception of pain; response to hydrostatic pressure; aging; response to drug; response to nutrient levels; phosphoinositide-mediated signaling; adenylate cyclase activation; Sertoli cell development; detection of mechanical stimulus involved in sensory perception of pain; positive regulation of programmed cell death; positive regulation of angiogenesis; response to ethanol; phospholipase C activation; B cell differentiation; Ras protein signal transduction; response to activity; positive regulation of Ras protein signal transduction; transmembrane receptor protein tyrosine kinase signaling pathway Disease: Thyroid Carcinoma, Familial Medullary; Insensitivity To Pain, Congenital, With Anhidrosis
NCBI Summary:	This gene encodes a member of the neurotrophic tyrosine kinase receptor (NTKR) family. This kinase is a membrane-bound receptor that, upon neurotrophin binding, phosphorylates itself and members of the MAPK pathway. The presence of this kinase leads to cell differentiation and may play a role in specifying sensory neuron subtypes. Mutations in this gene have been associated with congenital insensitivity to pain, anhidrosis, self-mutilating behavior, cognitive disability and cancer. Alternate transcriptional splice variants of this gene have been found, but only three have been characterized to date. [provided by RefSeq, Jul 2008]
UniProt Code:	P04629
NCBI GenInfo Identifier:	4585712
NCBI Gene ID:	4914
NCBI Accession:	NP_002520
UniProt Related Accession:	P04629
Molecular Weight:	87.511
NCBI Full Name:	high affinity nerve growth factor receptor isoform 2
NCBI Synonym Full Names:	neurotrophic receptor tyrosine kinase 1
NCBI Official Symbol:	NTRK1
NCBI Official Synonym Symbols:	MTC; TRK; TRK1; TRKA; Trk-A; p140-TrkA
NCBI Protein Information:	high affinity nerve growth factor receptor
UniProt Protein Name:	High affinity nerve growth factor receptor
UniProt Synonym Protein Names:	Neurotrophic tyrosine kinase receptor type 1; TRK1-transforming tyrosine kinase protein; Tropomyosin-related kinase A; Tyrosine kinase receptor; Tyrosine kinase receptor A; Trk-A; gp140trk; p140-TrkA
Protein Family:	Trk system potassium uptake protein
UniProt Gene Name:	NTRK1
UniProt Entry Name:	NTRK1_HUMAN

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

Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37°C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.

Step	Protocol
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.

Human TrkA ELISA Kit (HUFI00276)

Description