id author title date pages extension mime words sentences flesch summary cache txt cord-261959-pvufajw4 Karathanou, Konstantina A graph-based approach identifies dynamic H-bond communication networks in spike protein S of SARS-CoV-2 2020-09-10 .txt text/plain 9192 455 59 Markedly different H-bonding at these three clusters in open and pre-fusion conformations suggest dynamic H-bond clusters could facilitate structural plasticity and selection of a protein S protomer for binding to the host receptor, and proteolytic cleavage. The surface of the Severe Acute Respiratory Syndrome (SARS)-CoV-2 virion is decorated with large membrane-anchored spike proteins S (Figure 1 ) that bind to Angiotensin Converting Enzyme 2 (ACE2) receptor of the host cell (Briefing, 2020; Hoffmann et al., 2020; Li et al., 2003; Xiao et al., 2003; Zhou et al., 2020) . To derive clues about intra-molecular interactions with potential role in shaping structural dynamics of protein S, we computed two-dimensional graphs of all Hbonds of protein S in structures proposed for the closed, open, and pre-fusion conformation, and for ACE2 bound to an RBD fragment. ./cache/cord-261959-pvufajw4.txt ./txt/cord-261959-pvufajw4.txt