The convergent roles of tapasin and HLA-DM in antigen presentation

Scheherazade Sadegh-Nasseri, Mingnan Chen, Kedar Narayan, Marlene Bouvier

Research output: Contribution to journalReview articlepeer-review

38 Scopus citations


Cytotoxic and helper T cells respond to peptides derived from endogenous and exogenous sources that bind to major histocompatibility complex (MHC) class I and class II molecules and are presented on antigen-presenting cells. MHC class I and class II structures and maturation pathways have evolved to optimize antigen presentation to their respective T cells. The accessory proteins tapasin and HLA-DM (DM) crucially influence the selection of peptides that bind to the MHC molecules. We discuss here the dynamic interactions of tapasin and DM with their corresponding MHC molecules that indicate striking parallels. Utilization of a common mode of peptide selection by two different, but related, biological systems argue for its mechanistic validity.

Original languageEnglish (US)
Pages (from-to)141-147
Number of pages7
JournalTrends in Immunology
Issue number3
StatePublished - Mar 2008

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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