tokens: Structural studies have shown that class I major histocompatibility complex ( MHC ) - restricted peptide specific T cell receptor ( TCR ) - alpha / betas make multiple contacts with the alpha1 and alpha2 helices of the MHC , but it is unclear which or how many of these interactions contribute to functional binding .
folded_tokens: structural study have show that class i major histocompatibility complex ( mhc ) - restricted peptide specific t cell receptor ( tcr ) - alpha / beta make multiple contact with the alpha1 and alpha2 helix of the mhc , but it be unclear which or how many of these interaction contribute to functional binding .