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Transferrin receptor protein 1 (TfR1), also known as Cluster of Differentiation 71 (CD71), is a protein that in humans is encoded by the TFRC gene. [ 5 ] [ 6 ] TfR1 is required for iron import from transferrin into cells by endocytosis .
TfR2 binds to transferrin with a 25-30 fold lower affinity than TfR1. [3] [4] Although TfR1 mediated iron uptake is the major pathway for iron acquisition by most cells and especially developing erythrocytes, several studies have indicated that the uptake mechanism varies depending upon the cell type. It is also reported that Tf uptake exists ...
Each monomer consists of three domains: the protease, the helical, and the apical domains. The shape of a transferrin receptor resembles a butterfly based on the intersection of three clearly shaped domains. [18] Two main transferrin receptors found in humans denoted as transferrin receptor 1 (TfR1) and transferrin receptor 2 (TfR2).
Most cell types take up iron primarily through receptor-mediated endocytosis via transferrin receptor 1 (TFR1), transferrin receptor 2 (TFR2) and GAPDH. TFR1 has a 30-fold higher affinity for transferrin-bound iron than TFR2 and thus is the main player in this process.
Conventional iron uptake pathways, such as those using the transferrin receptor 1 (TfR1), often prove insufficient to meet these elevated iron demands in cancer cells. As a result, various cytokines and growth factors trigger the upregulation of CD44, a surface molecule capable of internalizing iron bound to the hyaluronan complex. This ...
They are found in the cytoplasmic tails of non-catalytic tyrosine-phosphorylated receptors [7] such as the CD3 and ζ-chains of the T cell receptor complex, the CD79-alpha and -beta chains of the B cell receptor complex, and certain Fc receptors. [1] [7] The tyrosine residues within these motifs become phosphorylated by Src family kinases ...
7132 21937 Ensembl ENSG00000067182 ENSMUSG00000030341 UniProt P19438 P25118 RefSeq (mRNA) NM_001065 NM_001346091 NM_001346092 NM_011609 RefSeq (protein) NP_001056 NP_001333020 NP_001333021 NP_035739 Location (UCSC) Chr 12: 6.33 – 6.34 Mb Chr 6: 125.33 – 125.34 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Tumor necrosis factor receptor 1 (TNFR1), also known as tumor necrosis ...
8797 21933 Ensembl ENSG00000104689 ENSMUSG00000022074 UniProt O00220 Q9QZM4 RefSeq (mRNA) NM_003844 NM_020275 RefSeq (protein) NP_003835 NP_064671 Location (UCSC) Chr 8: 23.19 – 23.23 Mb Chr 14: 70 – 70.02 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Death receptor 4 (DR4), also known as TRAIL receptor 1 (TRAILR1) and tumor necrosis factor receptor superfamily member 10A ...