PMID- 31296658 OWN - NLM STAT- MEDLINE DCOM- 20200331 LR - 20210317 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 294 IP - 36 DP - 2019 Sep 6 TI - Metal-triggered conformational reorientation of a self-peptide bound to a disease-associated HLA-B*27 subtype. PG - 13269-13279 LID - S0021-9258(20)30383-5 [pii] LID - 10.1074/jbc.RA119.008937 [doi] AB - Conformational changes of major histocompatibility complex (MHC) antigens have the potential to be recognized by T cells and may arise from polymorphic variation of the MHC molecule, the binding of modifying ligands, or both. Here, we investigated whether metal ions could affect allele-dependent structural variation of the two minimally distinct human leukocyte antigen (HLA)-B*27:05 and HLA-B*27:09 subtypes, which exhibit differential association with the rheumatic disease ankylosing spondylitis (AS). We employed NMR spectroscopy and X-ray crystallography coupled with ensemble refinement to study the AS-associated HLA-B*27:05 subtype and the AS-nonassociated HLA-B* 27:09 in complex with the self-peptide pVIPR (RRKWRRWHL). Both techniques revealed that pVIPR exhibits a higher degree of flexibility when complexed with HLA-B*27:05 than with HLA-B*27:09. Furthermore, we found that the binding of the metal ion Cu(2+) or Ni(2+), but not Mn(2+), Zn(2+), or Hg(2+), affects the structure of a pVIPR-bound HLA-B*27 molecule in a subtype-dependent manner. In HLA-B*27:05, the metals triggered conformational reorientations of pVIPR, but no such structural changes were observed in the HLA-B*27:09 subtype, with or without bound metal ion. These observations provide the first demonstration that not only major histocompatibility complex class II, but also class I, molecules can undergo metal ion-induced conformational alterations. Our findings suggest that metals may have a role in triggering rheumatic diseases such as AS and also have implications for the molecular basis of metal-induced hypersensitivities and allergies. CI - (c) 2019 Driller et al. FAU - Driller, Ronja AU - Driller R AD - Institut fur Chemie/Biochemie, AG Strukturbiochemie, Freie Universitat Berlin, Takustrasse 6, 14195 Berlin, Germany. FAU - Ballaschk, Martin AU - Ballaschk M AD - Leibniz-Institut fur Molekulare Pharmakologie, Robert-Rossle-Strasse 10, 13125 Berlin, Germany. FAU - Schmieder, Peter AU - Schmieder P AD - Leibniz-Institut fur Molekulare Pharmakologie, Robert-Rossle-Strasse 10, 13125 Berlin, Germany. FAU - Uchanska-Ziegler, Barbara AU - Uchanska-Ziegler B AD - Institut fur Immungenetik, Charite-Universitatsmedizin Berlin, Freie Universitat Berlin, Thielallee 73, 14195 Berlin, Germany; Ziegler Biosolutions, Fahrgasse 5, 79761 Waldshut-Tiengen, Germany. FAU - Ziegler, Andreas AU - Ziegler A AD - Ziegler Biosolutions, Fahrgasse 5, 79761 Waldshut-Tiengen, Germany. Electronic address: ziegler-biosolutions@gmx.de. FAU - Loll, Bernhard AU - Loll B AD - Institut fur Chemie/Biochemie, AG Strukturbiochemie, Freie Universitat Berlin, Takustrasse 6, 14195 Berlin, Germany; MoloX GmbH, Takustrasse 6, 14195 Berlin, Germany. Electronic address: loll@chemie.fu-berlin.de. LA - eng SI - PDB/5IB1 SI - PDB/5IB2 SI - PDB/5IB3 SI - PDB/5IB4 SI - PDB/5IB5 SI - PDB/1OF2 SI - PDB/1OGT SI - PDB/1UXS SI - PDB/3B6S PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190711 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (HLA-B27 Antigen) RN - 0 (Metals, Heavy) RN - 0 (Organometallic Compounds) RN - 0 (Peptides) SB - IM MH - Crystallography, X-Ray MH - HLA-B27 Antigen/*chemistry/immunology MH - Humans MH - Metals, Heavy/*chemistry/immunology MH - Models, Molecular MH - Molecular Conformation MH - Organometallic Compounds/*chemistry/immunology MH - Peptides/*chemistry/immunology PMC - PMC6737219 OTO - NOTNLM OT - HLA-B*27 OT - NMR spectroscopy OT - X-ray crystallography OT - ankylosing spondylitis OT - autoimmune disease OT - autoimmunity OT - conformational change OT - crystal structure OT - ensemble refinement OT - hypersensitivity OT - major histocompatibility complex (MHC) OT - nuclear magnetic resonance (NMR) OT - peptide dynamics COIS- The authors declare that they have no conflicts of interest with the contents of this article EDAT- 2019/07/13 06:00 MHDA- 2020/04/01 06:00 PMCR- 2020/09/06 CRDT- 2019/07/13 06:00 PHST- 2019/04/19 00:00 [received] PHST- 2019/07/08 00:00 [revised] PHST- 2019/07/13 06:00 [pubmed] PHST- 2020/04/01 06:00 [medline] PHST- 2019/07/13 06:00 [entrez] PHST- 2020/09/06 00:00 [pmc-release] AID - S0021-9258(20)30383-5 [pii] AID - RA119.008937 [pii] AID - 10.1074/jbc.RA119.008937 [doi] PST - ppublish SO - J Biol Chem. 2019 Sep 6;294(36):13269-13279. doi: 10.1074/jbc.RA119.008937. Epub 2019 Jul 11.