Impairment of starvation-induced and constitutive autophagy in Atg7-deficient mice - Komatsu, M; Waguri, S; Ueno, T; Iwata, J; Murata, S; Tanida, I; Ezaki, J; Mizushima, N; Ohsumi, Y; Uchiyama, Y (J Cell Biol, 2005)