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Title: Structural Basis of CD160:HVEM Recognition

Journal Article · · Structure

CD160 is a signaling molecule that interacts with herpes virus entry mediator (HVEM) and contributes to a wide range of immune responses, including T cell inhibition, natural killer cell activation, and mucosal immunity. GPI-anchored and transmembrane isoforms of CD160 share the same ectodomain responsible for HVEM engagement, which leads to bidirectional signaling. Despite the importance of the CD160:HVEM signaling axis and its therapeutic relevance, the structural and mechanistic basis underlying CD160-HVEM engagement has not been described. We report the crystal structures of the human CD160 extracellular domain and its complex with human HVEM. CD160 adopts a unique variation of the immunoglobulin fold and exists as a monomer in solution. The CD160:HVEM assembly exhibits a 1:1 stoichiometry and a binding interface similar to that observed in the BTLA:HVEM complex. Finally, our work reveals the chemical and physical determinants underlying CD160:HVEM recognition and initiation of associated signaling processes.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER); National Institutes of Health (NIG)
Grant/Contract Number:
AC02-98CH10886; AC02-06CH11357; S10 OD020068
OSTI ID:
1646509
Alternate ID(s):
OSTI ID: 1562695
Journal Information:
Structure, Journal Name: Structure Vol. 27 Journal Issue: 8; ISSN 0969-2126
Publisher:
ElsevierCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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