The reducible complexity of a mitochondrial molecular machine - Clements, A; Bursac, D; Gatsos, X; Perry, AJ; Civciristov, S; Celik, N; Likic, VA; Poggio, S; Jacobs-Wagner, C; Strugnell, RA; Lithgow, T (PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2009)