A, B, C, D, E, F, G, H [auth a], I [auth b], J [auth c], K [auth d], L [auth e], M [auth f], N [auth g], O [auth Q], P [auth R], Q [auth S], R [auth T], S [auth U], T [auth V], U [auth W] | PDBTM | Annotated as membrane protein by PDBTM |