1CX8 image
Deposition Date 1999-08-28
Release Date 1999-09-09
Last Version Date 2024-11-06
Entry Detail
PDB ID:
1CX8
Keywords:
METAL TRANSPORT
Title:
CRYSTAL STRUCTURE OF THE ECTODOMAIN OF HUMAN TRANSFERRIN RECEPTOR
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Cricetinae gen. sp.
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.20 Å
R-Value Free:
0.28
R-Value Work:
0.24
Space Group:
P 21 21 21
1CX8 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TRANSFERRIN RECEPTOR PROTEIN
Gene (Uniprot):TFRC
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:639
Number of Molecules:8
Biological Source:Homo sapiens
UniProt ID:P02786 Pfam ID:PF02225, PF04389, PF04253
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
ASN A ASN GLYCOSYLATION SITE
Ligand Molecules
NAG
SM
Primary Citation
Crystal structure of the ectodomain of human transferrin receptor.
Science 286 779 782 (1999)
PMID: 10531064 DOI: 10.1126/science.286.5440.779

Abstact

The transferrin receptor (TfR) undergoes multiple rounds of clathrin-mediated endocytosis and reemergence at the cell surface, importing iron-loaded transferrin (Tf) and recycling apotransferrin after discharge of iron in the endosome. The crystal structure of the dimeric ectodomain of the human TfR, determined here to 3.2 angstroms resolution, reveals a three-domain subunit. One domain closely resembles carboxy- and aminopeptidases, and features of membrane glutamate carboxypeptidase can be deduced from the TfR structure. A model is proposed for Tf binding to the receptor.

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Primary Citation of related structures
1CX8