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http://purl.uniprot.org/citations/37798283http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/37798283http://www.w3.org/2000/01/rdf-schema#comment"Transglutaminase 3 (TG3), the autoantigen of dermatitis herpetiformis (DH), is a calcium dependent enzyme that targets glutamine residues in polypeptides for either transamidation or deamidation modifications. To become catalytically active TG3 requires proteolytic cleavage between the core domain and two C-terminal β-barrels (C1C2). Here, we report four X-ray crystal structures representing inactive and active conformations of human TG3 in complex with a TG3-specific Fab fragment of a DH patient derived antibody. We demonstrate that cleaved TG3, upon binding of a substrate-mimicking inhibitor, undergoes a large conformational change as a β-sheet in the catalytic core domain moves and C1C2 detaches. The unique enzyme-substrate conformation of TG3 without C1C2 is recognized by DH autoantibodies. The findings support a model where B-cell receptors of TG3-specific B cells bind and internalize TG3-gluten enzyme-substrate complexes thereby facilitating gluten-antigen presentation, T-cell help and autoantibody production."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.org/dc/terms/identifier"doi:10.1038/s41467-023-42004-z"xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/author"Das S."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/author"Sollid L.M."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/author"Heggelund J.E."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/author"Stamnaes J."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/author"Iversen R."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/date"2023"xsd:gYear
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/name"Nat Commun"xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/pages"6216"xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/title"Autoantibody binding and unique enzyme-substrate intermediate conformation of human transglutaminase 3."xsd:string
http://purl.uniprot.org/citations/37798283http://purl.uniprot.org/core/volume"14"xsd:string
http://purl.uniprot.org/citations/37798283http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/37798283
http://purl.uniprot.org/citations/37798283http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/37798283
http://purl.uniprot.org/uniprot/#_Q08188-mappedCitation-37798283http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/37798283
http://purl.uniprot.org/uniprot/Q08188http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/37798283