Invitrogen
Human CD44std (Soluble) ELISA Kit
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Product Specifications
Analytical sensitivity
Assay range
Sample type/volume
Hands-on time
Time-to-result
Homogenous (no wash)
Interassay CV
Intraassay CV
Instrument
Product size
Contents
Standard
Sample Diluent
Assay Buffer concentrate
HRP-conjugated Detection Antibody
Wash Buffer
Chromogen
Stop Solution
Adhesive Plate Covers
Shipping conditions
Storage
Protein name
Target sub-specificity
Species (tested)
Assay kit format
Detector antibody conjugate
Label or dye
About This Kit
The Human CD44std ELISA quantitates Hu CD44std in human serum, plasma, urine, amniotic fluid or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu CD44std.
Principle of the method
The Human CD44std solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen.
Rigorous validation
Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.
CD44 cell surface antigen is a 100 kDa type 1 transmembrane glycoprotein widely expressed on human leucocytes, white matter of the brain and by some epithelial cells of the intestine and breast. Several isoforms of CD44 exist, including the predominant CD44H isoform detected in many normal tissues. CD44 is a receptor for hyaluronic acid (HA) and is involved in cell-cell interactions, cell adhesion and migration. CD44 also participates in a wide variety of cellular functions including lymphocyte activation, recirculation and homing. CD44 expression may be up-regulated upon some carcinomas, and it has been speculated that this may be related to metastatic potential. CD44 is expressed by hematopoietic, non-hematopoietic cells, epithelial tissues, and to filopodia in cultured keratinocytes. Further, bone marrow myeloid cells and memory T cells express CD44 at high levels, and peripheral B and T cells can upregulate the expression of CD44 in response to certain stimulatory events. Transcripts for the CD44 gene undergo complex alternative splicing that results in many functionally distinct isoforms, however, the full-length nature of some of these variants have not been determined. Alternative splicing is the basis for the structural and functional diversity of the CD44 protein. Diseases associated with CD44 dysfunction include superficial keratitis and lichen sclerosus. CD44 also may be related to tumor metastasis formation.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Gene aliases : CD44, CDW44, CSPG8, ECMR-III, HCELL, HUTCH-I, IN, LHR, MC56, MDU2, MDU3, MIC4, Pgp1
Gene ID : (Human) 960
Gene symbol : CD44
Protein Aliases : CD44, CD44 antigen, CD44 molecule, ECMRIII, hyaluronan receptor, PGP I, PGPI, sCD 44, sCD44, soluble CD 44, CDw44, cell surface glycoprotein CD44, chondroitin sulfate proteoglycan 8, ECMR-III, Epican, Extracellular matrix receptor III, GP90 lymphocyte homing/adhesion receptor, hematopoietic cell E- and L-selectin ligand, Heparan sulfate proteoglycan, Hermes antigen, homing function and Indian blood group system, HUTCH-I, Hyaluronate receptor, PGP-1, PGP-I, Phagocytic glycoprotein 1, Phagocytic glycoprotein I, soluble CD44
UniProt ID (Human) P16070
Performance Guarantee
If an Invitrogen™ immunoassay doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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