8a64: Difference between revisions
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==cryoEM structure of the catalytically inactive EndoS from S. pyogenes in complex with the Fc region of immunoglobulin G1== | ==cryoEM structure of the catalytically inactive EndoS from S. pyogenes in complex with the Fc region of immunoglobulin G1.== | ||
<StructureSection load='8a64' size='340' side='right'caption='[[8a64]], [[Resolution|resolution]] 4.60Å' scene=''> | <StructureSection load='8a64' size='340' side='right'caption='[[8a64]], [[Resolution|resolution]] 4.60Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
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</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/ | [https://www.uniprot.org/uniprot/ENDOS_STRP1 ENDOS_STRP1] Endoglucosidase that acts as a host immune evasion factor by mediating hydrolysis of the N-linked glycan from the Fc region of host immunoglobulin-gamma (IgG) during infection (PubMed:11406581, PubMed:11598100, PubMed:12438337, PubMed:18182097, PubMed:20357243, PubMed:21619648, PubMed:22551167, PubMed:22747414, PubMed:24668806, PubMed:24753590, PubMed:29760474, PubMed:30102520, PubMed:31092533). Specifically catalyzes the hydrolysis of the beta-1,4 linkage between the first two N-acetylglucosamine residues of the complex-type N-linked glycan located on 'Asn-297' of the Fc region of IgG antibodies (IGHG1, IGHG2, IGHG3 or IGHG4), thereby preventing interaction between IgGs and Fc receptors and ability to activate the complement pathway (PubMed:11406581, PubMed:11598100, PubMed:12438337, PubMed:20357243, PubMed:21619648, PubMed:31092533). Shows a specificity for biantennary complex type N-glycans; does neither cleave larger complex type glycans nor oligomannose and nor hybrid-type glycans (PubMed:22551167, PubMed:26156869). Specifically acts on IgGs; does not act on immunoglobulin alpha, beta, delta or mu (PubMed:11598100).<ref>PMID:11406581</ref> <ref>PMID:11598100</ref> <ref>PMID:12438337</ref> <ref>PMID:18182097</ref> <ref>PMID:20357243</ref> <ref>PMID:21619648</ref> <ref>PMID:22551167</ref> <ref>PMID:22747414</ref> <ref>PMID:24668806</ref> <ref>PMID:24753590</ref> <ref>PMID:26156869</ref> <ref>PMID:29760474</ref> <ref>PMID:30102520</ref> <ref>PMID:31092533</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||