Intrinsic folding properties of the HLA-B27 heavy chain revealed by single chain trimer versions of peptide-loaded class I major histocompatibility complex molecules by Lenart, I, Truong, L-H, Nguyen, DD, Rasiukienė, O, Tsao, E, Armstrong, J, Kumar, P, McHugh, K, Pereira, BI, Maan, BS, Garstka, MA, Bowness, P, Blake, N, Powis, SJ, Gould, K, Nesbeth, D, Antoniou, AN