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Combined Effects of Ankylosing Spondylitis-associated ERAP1 Polymorphisms Outside the Catalytic and Peptide-binding Sites on the Processing of Natural HLA-B27 Ligands

19 Dec 2013

Abstract excerpt

ERAP1 polymorphism involving residues 528 and 575/725 is associated with ankylosing spondylitis among HLA-B27-positive individuals. We used four recombinant variants to address the combined effects of the K528R and D575N polymorphism on the processing of HLA-B27 ligands. The hydrolysis of a fluorogenic substrate, Arg-528/Asp-575 < Lys-528/Asp-575 < Arg-528/Asn-575 < Lys-528/Asn-575, indicated that the relative...

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PMID: 24352655
DOI: 10.1074/jbc.m113.529610

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