To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. Cryo-EM tomography reconstruction of TRAP1-SpyCatcher protein particles embedded in ice layer on a SpyTag-PEG spacer (M.W. 5000Da) GO affinity grid. PNAS. DOI: 10.1073/pnas.2009707117 Download Original Video Browse All Videos »