Fetal Hemoglobin / FITC / REA533

Product Details

Description	Clone REA533 recognizes the human fetal hemoglobin (HbF) antigen, a form of hemoglobin present during fetal development. The hemoglobin molecule is a tetramer composed of two subunits of alpha-like globin peptide chains and two subunits of the beta-like globin peptides, along with heme moieties necessary for this molecule´s oxygen-carrying capacity. When production of the first enucleated definitive erythrocytes commences from stem and progenitor cells in the fetal liver, the predominant beta-like globin molecule produced is gamma-globin. The gamma-globin chains combine with adult alpha-globin chains into a stable tetramer forming HbF. Shortly after the time of birth there is a switch from predominant expression of HbF to adult hemoglobin (HbA), which is mediated by a transcriptional switch in definitive erythroid progenitors from gamma- to beta-globin. The synthesis of HbF is normally reduced to very low levels of less than 0.6% of the total hemoglobin in adults. HbF levels may be increased in adults in a number of inherited and acquired disorders. The clinical significance of these conditions with raised HbF relates to their interaction in disorders such as sickle cell disease and beta-thalassemia in which raised levels of HbF can lead to considerable amelioration of disease severity. \| Additional information: Clone REA533 displays negligible binding to Fc receptors.
Conjugate	FITC
Clone	REA533
Target Species	Human
Applications	FC
Supplier	Miltenyi Biotec
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About FITC
Fluorescein isothiocyanate (FITC) has an excitation peak at 495 nm and an emission peak at 519 nm. The name FITC is a misnomer in that the isothiocyanate is a reactive form of this dye. Once FITC is conjugated to an antibody, it is simply Fluorescein conjugated. FITC is one of the most widely used dyes for fluorescent applications, therefore most instruments come standard with a 488 nm laser and FITC filter set up. FITC is commonly conjugated to secondary antibodies and used in applications such as flow cytometry, immunocytochemistry, and immunohistochemistry. FITC is relatively dim, sensitive to photobleaching and it is susceptible to changes is pH. There are better performing alternatives to FITC, like Vio®Bright 515, Alexa Fluor™ 488, iFluor® 488, CF®488A and DY-488. FITC is a long-time generic dye with no sole manufacturer or trademark.

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