>7L4Z_1|Chains A, B, C, D, E|Spike protein S1|Severe acute respiratory syndrome coronavirus 2 (2697049) RVQPTESIVRFPNITNLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTNGVGYQPYRVVVLSFELLHAPATVCGPKKSTNLVKNKCVNFHHHHHH >7L4Z_2|Chains F[auth R], G[auth S], H[auth T], I[auth U], J[auth V]|ACE-DTY-LYS-ALA-GLY-VAL-VAL-TYR-GLY-TYR-ASN-ALA-TRP-ILE-ARG-CYS-NH2|synthetic construct (32630) XYKAGVVYGYNAWIRCX