A versatile strategy for production of membrane proteins with diverse topologies: application to investigation of bacterial homologues of human divalent metal ion and nucleoside tr... by Ma, C, Hao, Z, Huysmans, G, Lesiuk, A, Bullough, P, Wang, Y, Bartlam, M, Phillips, S, Young, J, Goldman, A, Baldwin, S, Postis, V