Photochemical probe identification of a small-molecule inhibitor binding site in Hedgehog acyltransferase (HHAT) by Lanyon-Hogg, T, Ritzefeld, M, Zhang, L, Pogranyi, B, Mondal, M, Andrei, S, Sefer, L, Johnston, C, Coupland, C, Greenfield, J, Newington, J, Fuchter, M, Magee, A, Siebold, C, Tate, E