>8K3K_1|Chain A[auth E]|Spike protein S1|Severe acute respiratory syndrome coronavirus 2 (2697049) RVQPTESIVRFPNITNLCPFDEVFNATRFASVYAWNRKRISNCVADYSVLYNLAPFFTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGNIADYNYKLPDDFTGCVIAWNSNKLDSKVSGNYNYLYRLFRKSNLKPFERDISTEIYQAGNKPCNGVAGFNCYFPLKSYSFRPTYGVGHQPYRVVVLSFELLHAPATVCGPKKSTGTGLNDIFEAQKIEWHEGSLEVLFQGPHHHHHHHH >8K3K_2|Chain B[auth D]|Nanobody Nb4|synthetic construct (32630) GSSSAVQLQASGGGFVQPGGSLRLSCAASGWAETFGHMGWFRQAPGKEREFVSAIDWWDTVHYYADSVKGRFTISRDNSKNTVYLQMNSLRAEDTATYYCAYWDMDYLQNSIPVDYWGQGTQVTVSSAGRAGEQKLISEEDLNSAVDHHHHHH