Structural highlights
Function[GP2_HUMAN] Functions as an intestinal M-cell transcytotic receptor specific of type-I-piliated bacteria that participates in the mucosal immune response toward these bacteria. At the apical membrane of M-cells it binds fimH, a protein of the bacteria type I pilus tip. Internalizes bound bacteria, like E.coli and S.typhimurium, from the lumen of the intestine and delivers them, through M-cells, to the underlying organized lymphoid follicles where they are captured by antigen-presenting dendritic cells to elicit a mucosal immune response.[1] Publication Abstract from PubMedGlycoprotein 2 (GP2) and uromodulin (UMOD) filaments protect against gastrointestinal and urinary tract infections by acting as decoys for bacterial fimbrial lectin FimH. By combining AlphaFold2 predictions with X-ray crystallography and cryo-EM, we show that these proteins contain a bipartite decoy module whose new fold presents the high-mannose glycan recognized by FimH. The structure rationalizes UMOD mutations associated with kidney diseases and visualizes a key epitope implicated in cast nephropathy. Structure of the decoy module of human glycoprotein 2 and uromodulin and its interaction with bacterial adhesin FimH.,Stsiapanava A, Xu C, Nishio S, Han L, Yamakawa N, Carroni M, Tunyasuvunakool K, Jumper J, de Sanctis D, Wu B, Jovine L Nat Struct Mol Biol. 2022 Mar;29(3):190-193. doi: 10.1038/s41594-022-00729-3., Epub 2022 Mar 10. PMID:35273390[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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This page was last modified 11:58, 23 March 2022.