CD71/TfR recombinant protein

CD71/TfR Recombinant Protein

Cat. Num. AAA3003698

• Gene Names: TFRC; T9; TR; TFR; p90; CD71; TFR1; TRFR
• Purity: Transferred into competent cells and the supernatant was purified by NI column affinity chromatography and the purity is >85% (by SDS-PAGE).
• Synonyms: CD71/TfR; CD71/TfR Recombinant Protein; CD71/TfR recombinant protein

• Host: E Coli
• Purity/Purification: Transferred into competent cells and the supernatant was purified by NI column affinity chromatography and the purity is >85% (by SDS-PAGE).
• Form/Format: PBS, 4M Urea, PH7.4
• Concentration: >=0.5mg/ml (varies by lot)
• Sequence: QNVKHPVTGQFLYQDSNWASKVEKLTLDNAAFPFLAYSGIPAVSFCFCEDTDYPYLGTTMDTYKELIERIPELNKVARAAAEVAGQFVIKLTHDVELNLDYERYNSQLLSFVRDLNQYRADIKEMGLSLQWLYSARGDFFRATSRLTTDFGNAEKTDRFVMKKLNDRVMRVEYHFLSPYVSPKESPFRHVFWGSGSHTLPALLENLKLRKQNNGAFNETLFRNQLALATWTIQGAANALSG

• Tag: His-tag in C-terminal
• Expression Vector: pet-22b(+)
• BP: 735
• Restriction Site: NdeI-XhoI
• Preparation and Storage: Store at 4 degee C for short term. Aliquot and store at -20 degee C long term. Avoid freeze-thaw cycles.

Testing Data

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Related Product Information for CD71/TfR recombinant protein

Background: Transferrin receptor 1 (CD71, TFRC) is a type II transmembrane receptor and carrier protein responsible for the uptake of cellular iron through receptor-mediated endocytosis. Neutral pH at the cell surface promotes binding of the iron-binding glycoprotein transferrin (Tf) to the CD71 receptor. The receptor-ligand complex enters the cell through receptor-mediated endocytosis and is internalized into an endosome. Relatively lower endosomal pH leads to a change in the local charge environment surrounding the iron-transferrin binding site and results in the release of iron. The receptor-ligand complex is recycled to the cell surface where transferrin dissociates from the CD71 receptor. Ubiquitously expressed transferrin receptor is continuously recycled and undergoes clathrin-mediated endocytosis regardless of ligand binding state. The interaction between receptor and ligand has been studied in detail. The helical domain of CD71 directly interacts with the transferrin C-lobe and induces a conformation change in Tf to facilitate the transport process. Interaction between the receptor CD71 and transferrin is mediated by the membrane protein hemochromatosis (HFE). HFE binds the alpha-helical domain of CD71, blocking formation of the CD71-transferrin complex and inhibiting iron uptake. In addition to binding transferrin, CD71 also interacts with H-ferritin at the cell surface and transports this intracellular iron storage protein to cellular endosomes and lysosomes. Additional studies indicate that the transferrin receptor is an evolutionarily conserved receptor for a number or arenaviruses and at least one retrovirus. Aberrant expression of CD71 is seen in a number of cancers, including thyroid carcinomas, lymphomas, and T-lineage leukemias, suggesting a possible therapeutic role for targeted inhibition of the transferrin receptor.

NCBI and Uniprot Product Information

• NCBI GI #: 189458819
• NCBI GeneID: 7037
• NCBI Accession #: NP_001121620.1
• NCBI GenBank Nucleotide #: NM_001128148.1
• UniProt Accession #: P02786; Q1HE24; Q59G55; Q9UCN0; Q9UCU5; Q9UDF9; Q9UK21; D3DXB0
• Molecular Weight: 84,871 Da
• NCBI Official Full Name: transferrin receptor protein 1
• NCBI Official Synonym Full Names: transferrin receptor (p90, CD71)
• NCBI Official Symbol: TFRC
• NCBI Official Synonym Symbols: T9; TR; TFR; p90; CD71; TFR1; TRFR
• NCBI Protein Information: transferrin receptor protein 1
• UniProt Protein Name: Transferrin receptor protein 1
• UniProt Gene Name: TFRC
• UniProt Synonym Gene Names: TR; TfR; TfR1; Trfr; sTfR
• UniProt Entry Name: TFR1_HUMAN

Uniprot Description

TfR: the transferrin receptor. Regulates the cellular uptake of iron occurs via receptor-mediated endocytosis of ligand-occupied receptors 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.

Protein type: Membrane protein, integral; Receptor, misc.; Cell surface

Chromosomal Location of Human Ortholog: 3q29

Cellular Component: extracellular space; cell surface; intracellular membrane-bound organelle; integral to plasma membrane; cytoplasmic membrane-bound vesicle; extracellular region; coated pit; recycling endosome; membrane; perinuclear region of cytoplasm; melanosome; plasma membrane; vesicle; endosome; external side of plasma membrane

Molecular Function: identical protein binding; protein binding; transferrin receptor activity; double-stranded RNA binding

Biological Process: receptor-mediated endocytosis; viral reproduction; cellular iron ion homeostasis; positive regulation of bone resorption; transferrin transport; osteoclast differentiation; regulation of cell growth; transmembrane transport; regulation of cell proliferation