Structural analysis of cross α-helical nanotubes provides insight into the designability of filamentous peptide nanomaterials oleh Fengbin Wang, Ordy Gnewou, Charles Modlin, Leticia C. Beltran, Chunfu Xu, Zhangli Su, Puneet Juneja, Gevorg Grigoryan, Edward H. Egelman, Vincent P. Conticello