Transferrin Receptor (phospho S24) antibody (ab61021)

Product Name 

Transferrin Receptor (phospho S24) antibody

Product type 

Primary antibodies

Description 

Rabbit polyclonal to Transferrin Receptor (phospho S24)

Immunogen 

Synthetic phosphopeptide derived from human Transferrin Receptor around the phosphorylation site of serine 24 (R-F-S^P-L-A).

Reacts with 
(species key)

Hu, Ms

Specificity 

Detects endogenous levels of Transferrin Receptor only when phosphorylated at serine 24.

Tested applications 
(see key)

ELISA, IHC-P, WB

Abreviews 

Customer reviews (see key)

Read about Abreviews

Application notes 
(see key)

Recommended dilutions
ELISA: 1/10000.
IHC-P: 1/50 - 1/100.
WB: 1/500 - 1/1000. Detects a band of approximately 85 kDa (predicted molecular weight: 85 kDa).

Not yet tested in other applications.
Optimal dilutions/concentrations should be determined by the end user.

Positive control 
(see definition)

Human brain tissue
293 cells, treated with PMA

Cellular localization 

Type II membrane protein. Secreted (isoform sTfR).

Research areas 

Cancer >> Cancer Metabolism >> Response to hypoxia
Stem Cells >> Hematopoietic Progenitors >> Myeloid >> Erythrocytic Lineage
Stem Cells >> Hematopoietic Progenitors >> Lymphoid >> T Lymphocytic Lineage
Stem Cells >> Hematopoietic Progenitors >> Lymphoid >> B Lymphocytic Lineage
Stem Cells >> Neural Stem Cells >> Surface Molecules
Immunology >> Cell Type Markers >> CD >> Non-lineage
Cardiovascular >> Blood >> Serum Proteins

Relevance 

Cellular uptake of iron occurs via receptor mediated endocytosis of ligand occupied transferrin receptor into specialized endosomes. Endosomal acidification leads to iron release. The apotransferrin receptor complex is then recycled to the cell surface with a return to neutral pH and the concomitant loss of affinity of apotransferrin for its receptor. Transferrin receptor is necessary for development of erythrocytes and the nervous system (By similarity). Useful in studies of dividing haematopoietic and tumour cell populations, and metabolic activity. A second ligand, the heditary hemochromatosis protein HFE, competes for binding with transferrin for an overlapping C terminal binding site. The antigen is present on most dividing cells, including normally cycling in vivo hematopoietic progenitor cells, mitogenically stimulated cells in vitro, some primary tumor cells and most proliferating cells in vitro.

The transferrin receptor has been structurally characterized as a sulfide bound dimer of identical glycoprotein subunits of 95 kDa. The transferrin receptor is not present on resting blood lymphocytes. On PBL, the receptor appears after activation. The expression of transferrin receptor is coordinately regulated with cell growth. Present on T and B cell lines. The soluble (or serum) transferrin receptor (sTfR) is a circulating truncated form of the membrane receptor protein; it is an 85 kDa glycoprotein forming in serum a 320 kDa complex with diferric transferrin. The most important clinical use of the sTfR determination is in the differential diagnosis between iron deficiency anaemia and the anaemia of chronic disease.

Database links 

Raised in 

Rabbit

Clonality 

Polyclonal

Isotype 

IgG

Purity 

Immunogen affinity purified

Storage buffer 

Preservative: 0.02% Sodium Azide
Constituents: 50% Glycerol, PBS (without Mg²⁺ and Ca²⁺), 150mM Sodium chloride, pH 7.4

Material safety datasheets (MSDS) for this product:
Glycerol MSDS
Sodium Azide MSDS

Purification notes 

The antibody against non-phosphopeptide was removed by chromatography using non-phosphopeptide corresponding to the phosphorylation site.

Form 

Liquid

Concentration 

1.000 mg/ml

Storage instructions 

Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.

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