To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2. Animated structure of truncated IFP at N-terminal part. The protein has a diameter of about 5 nm. Rationally designed fluorogenic protease reporter visualizes spatiotemporal dynamics of apoptosis in vivo Tsz-Leung To, Beverly J. Piggott, Kalpana Makhijani, Dan Yu, Yuh Nung Jan, and Xiaokun Shu PNAS. 2015. DOI: 10.1073/pnas.1502857112 Download Original Video Browse All Videos »