4n0u

Ternary complex between Neonatal Fc receptor, serum albumin and Fc

spinqualitylabelsall models 4n0u, resolution 3.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4n0u is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.8Å Ligands: BMA, FUL, MAN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function FCGRN_HUMAN Binds to the Fc region of monomeric immunoglobulins gamma. Mediates the uptake of IgG from milk. Possible role in transfer of immunoglobulin G from mother to fetus. Publication Abstract from PubMed We report the three-dimensional structure of human neonatal Fc receptor (FcRn) bound concurrently to its two known ligands. More particularly, we solved the crystal structure of the complex between human FcRn, wild-type human serum albumin (HSA), and a human Fc engineered for improved pharmacokinetics properties (Fc-YTE). The crystal structure of human FcRn bound to wild-type HSA alone is also presented. HSA domain III exhibits an extensive interface of contact with FcRn, whereas domain I plays a lesser role. A molecular explanation for the HSA recycling mechanism is provided with the identification of FcRn His(161) as the only potential direct contributor to the corresponding pH-dependent process. At last, this study also allows an accurate structural definition of residues considered for decades as important to the human IgG/FcRn interaction and reveals Fc His(310) as a significant contributor to pH-dependent binding. Finally, we explain various structural mechanisms by which several Fc mutations (including YTE) result in increased human IgG binding to FcRn. Our study provides an unprecedented relevant understanding of the molecular basis of human Fc interaction with human FcRn. Structural Insights into Neonatal Fc Receptor-based Recycling Mechanisms.,Oganesyan V, Damschroder MM, Cook KE, Li Q, Gao C, Wu H, Dall'acqua WF J Biol Chem. 2014 Mar 14;289(11):7812-24. doi: 10.1074/jbc.M113.537563. Epub 2014, Jan 27. PMID:24469444 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Albumin 3D structures Beta-2 microglobulin 3D structures

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