CRYSTAL STRUCTURE OF THE ECTODOMAIN OF HUMAN TRANSFERRIN RECEPTOR
Structural highlights
1cx8 is a 8 chain structure with sequence from Homo sapiens. The November 2002 RCSB PDB Molecule of the Month feature on Ferritin and Transferrin by David S. Goodsell is 10.2210/rcsb_pdb/mom_2002_11. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
TFR1_HUMAN 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). A second ligand, the heditary hemochromatosis protein HFE, competes for binding with transferrin for an overlapping C-terminal binding site.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
↑ Rothenberger S, Iacopetta BJ, Kuhn LC. Endocytosis of the transferrin receptor requires the cytoplasmic domain but not its phosphorylation site. Cell. 1987 May 8;49(3):423-31. PMID:3568132
