UniProt Summary: Binds to the Fc region of monomeric immunoglobulins gamma (PubMed:7964511, PubMed:10933786). Mediates the selective uptake of IgG from milk and helps newborn animals to acquire passive immunity. IgG in the milk is bound at the apical surface of the intestinal epithelium. The resultant FcRn-IgG complexes are transcytosed across the intestinal epithelium and IgG is released from FcRn into blood or tissue fluids (By similarity). Possible role in transfer of immunoglobulin G from mother to fetus (PubMed:7964511). {ECO:0000250|UniProtKB:P13599, ECO:0000269|PubMed:10933786, ECO:0000269|PubMed:7964511}.
Pfam DomainsGO Terms
Pfam Domains
MHC I
C1-set
GO Terms
IgG immunoglobulin transcytosis in epithelial cells mediated by FcRn immunoglobulin receptor
immunoglobulin transcytosis in epithelial cells
beta-2-microglobulin binding
IgG binding
transcytosis
peptide antigen binding
external side of plasma membrane
extracellular space
immune response
vesicle-mediated transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)