PMID- 8970726 OWN - NLM STAT- MEDLINE DCOM- 19970312 LR - 20061115 IS - 1081-0706 (Print) IS - 1081-0706 (Linking) VI - 12 DP - 1996 TI - Fc receptors and their interactions with immunoglobulins. PG - 181-220 AB - Receptors for the Fc domain of immunoglobulins play an important role in immune defense. There are two well-defined functional classes of mammalian receptors. One class of receptors transports immunoglobulins across epithelial tissues to their main sites of action. This class includes the neonatal Fc receptor (FcRn), which transports immunoglobulin G (IgG), and the polymeric immunoglobulin receptor (pIgR), which transports immunoglobulin A (IgA) and immunoglobulin M (IgM). Another class of receptors present on the surfaces of effector cells triggers various biological responses upon binding antibody-antigen complexes. Of these, the IgG receptors (Fc gamma R) and immunoglobulin E (IgE) receptors (Fc epsilon R) are the best characterized. The biological responses elicited include antibody-dependent, cell-mediated cytotoxicity, phagocytosis, release of inflammatory mediators, and regulation of lymphocyte proliferation and differentiation. We summarize the current knowledge of the structures and functions of FcRn, pIgR, and the Fc gamma R and Fc epsilon RI proteins, concentrating on the interactions of the extracellular portions of these receptors with immunoglobulins. FAU - Raghavan, M AU - Raghavan M AD - Division of Biology, Howard Hughes Medical Institute, California Institute of Technology, Pasadena 91125, USA. FAU - Bjorkman, P J AU - Bjorkman PJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Annu Rev Cell Dev Biol JT - Annual review of cell and developmental biology JID - 9600627 RN - 0 (Immunoglobulins) RN - 0 (Receptors, Fc) SB - IM MH - Amino Acid Sequence MH - Animals MH - Humans MH - Immunoglobulins/*physiology MH - Molecular Sequence Data MH - Receptors, Fc/*physiology MH - *Signal Transduction RF - 158 EDAT- 1996/01/01 00:00 MHDA- 1996/01/01 00:01 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 1996/01/01 00:01 [medline] PHST- 1996/01/01 00:00 [entrez] AID - 10.1146/annurev.cellbio.12.1.181 [doi] PST - ppublish SO - Annu Rev Cell Dev Biol. 1996;12:181-220. doi: 10.1146/annurev.cellbio.12.1.181.