Human ALPL/Bone Alkaline Phosphatase ELISA Kit (HUFI02249)

Product Name:	Human ALPL/Bone Alkaline Phosphatase ELISA Kit
Product Code:	HUFI02249
Size:	96 Assays
Alias:	BALP, Bone Alkaline Phosphatase, ALPL, BSAP, HOPS, AP-TNAP, TNSALP
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human BALP concentrations in serum plasma and other biological fluids.
Sensitivity:	1.875ng/ml
Range:	3.125-200ng/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

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

Matrix	Recovery range(%)	Average(%)
serum(n=5)	85-105	96
EDTA plasma(n=5)	86-96	93
UFH plasma(n=5)	90-105	97

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human BALP 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)	85-101%	94-103%	85-104%
EDTA plasma(n=5)	85-101%	84-99%	83-101%
UFH plasma(n=5)	84-96%	81-100%	83-98%

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

P05186

UniProt Protein Function:	ALPL: This isozyme may play a role in skeletal mineralization. Defects in ALPL are a cause of hypophosphatasia (HOPS). HOPS is an inherited metabolic bone disease characterized by defective skeletal mineralization. Four hypophosphatasia forms are distinguished, depending on the age of onset: perinatal, infantile, childhood and adult type. The perinatal form is the most severe and is almost always fatal. Patients with only premature loss of deciduous teeth, but with no bone disease are regarded as having odontohypophosphatasia (odonto). Defects in ALPL are a cause of hypophosphatasia childhood type (HOPSC). Defects in ALPL are a cause of hypophosphatasia infantile type (HOPSI). Belongs to the alkaline phosphatase family. 3 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:	Protein type:EC 3.1.3.1; Cofactor and Vitamin Metabolism - folate biosynthesis; Membrane protein, GPI anchor; Motility/polarity/chemotaxis; Phosphatase (non-protein) Chromosomal Location of Human Ortholog: 1p36.12 Cellular Component: extracellular matrix; extracellular space; membrane; integral to membrane; plasma membrane Molecular Function:protein binding; pyrophosphatase activity; alkaline phosphatase activity; metal ion binding Biological Process: osteoblast differentiation; response to antibiotic; response to vitamin D; dephosphorylation; response to glucocorticoid stimulus; reproductive developmental process; response to lipopolysaccharide; skeletal development; endochondral ossification Disease: Hypophosphatasia, Infantile; Hypophosphatasia, Adult; Hypophosphatasia, Childhood
NCBI Summary:	There are at least four distinct but related alkaline phosphatases: intestinal, placental, placental-like, and liver/bone/kidney (tissue non-specific). The first three are located together on chromosome 2, while the tissue non-specific form is located on chromosome 1. The product of this gene is a membrane bound glycosylated enzyme that is not expressed in any particular tissue and is, therefore, referred to as the tissue-nonspecific form of the enzyme. The exact physiological function of the alkaline phosphatases is not known. A proposed function of this form of the enzyme is matrix mineralization; however, mice that lack a functional form of this enzyme show normal skeletal development. This enzyme has been linked directly to hypophosphatasia, a disorder that is characterized by hypercalcemia and includes skeletal defects. The character of this disorder can vary, however, depending on the specific mutation since this determines age of onset and severity of symptoms. Alternatively spliced transcript variants have been described. [provided by RefSeq, Apr 2010]
UniProt Code:	P05186
NCBI GenInfo Identifier:	68067533
NCBI Gene ID:	249
NCBI Accession:	P05186.4
UniProt Secondary Accession:	P05186,O75090, Q2TAI7, Q59EJ7, Q5BKZ5, Q5VTG5, Q6NZI8 Q8WU32, A1A4E7, B2RMP8, B7Z387, B7Z4Y6,
UniProt Related Accession:	P05186
Molecular Weight:	51,045 Da
NCBI Full Name:	Alkaline phosphatase, tissue-nonspecific isozyme
NCBI Synonym Full Names:	alkaline phosphatase, liver/bone/kidney
NCBI Official Symbol:	ALPL
NCBI Official Synonym Symbols:	HOPS; TNAP; APTNAP; TNSALP; AP-TNAP
NCBI Protein Information:	alkaline phosphatase, tissue-nonspecific isozyme; glycerophosphatase; tissue-nonspecific ALP; alkaline phosphomonoesterase; liver/bone/kidney-type alkaline phosphatase; alkaline phosphatase liver/bone/kidney isozyme
UniProt Protein Name:	Alkaline phosphatase, tissue-nonspecific isozyme
UniProt Synonym Protein Names:	Alkaline phosphatase liver/bone/kidney isozyme
Protein Family:	Alkaline phosphatase
UniProt Gene Name:	ALPL
UniProt Entry Name:	PPBT_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 ALPL/Bone Alkaline Phosphatase ELISA Kit (HUFI02249)

Description