Result: Few NTD mutations, namely
T20N,
P26S,
D138Y, and
R190S, likely contributed to the increase in ACE2 binding, with ~2, ~1.6, ~1.3 and ~1.8- fold increase compared to
D614G, respectively.
Result: Our results show that all the NTD mutations, namely
L18F,
T20N,
P26S,
D138Y and
R190S, attenuated the binding of naive-vaccinated plasma Abs.