D614G reshapes allosteric networks and opening mechanisms of SARS-CoV-2 spikes. - Kearns FL; Bogetti AT; Calvó-Tusell C; Braza MKE; Casalino L; Gramm AJ; Braet S; Rosenfeld MA; Rajapaksha H; Barker B; Anand G; Chong LT; et al. (Proceedings of the National Academy of Sciences of the United States of America, 2026)