Fig. 4: Structures of tapasin–PaSta1 (7TUF) and tapasin–PaSta2 (7TUG) complexes locate sites of antibody interactions.
From: Structural mechanism of tapasin-mediated MHC-I peptide loading in antigen presentation

a Ribbon/transparent surface representation of the structures of the tapasin–PaSta1 complex. b tapasin–PaSta2 complex. c surface representation based on superposition of tapasin from each complex. d superposition of the PaSta1, PaSta2, and ERp57 (3F8U) complexes. For panel a, the first complex in the asymmetric unit is shown.