>7WEF_1|Chain A[auth C]|The heavy chain of Fab XGv289|Homo sapiens (9606) QVQLVQSGAEVKKPGASLKVSCRASGYTFTSHFIHWVRQAPGQGLEWMGIINPSGGASYAQNFRDRVTMTTDPSTSTVYMELGSLRSEDTAVYYCARAEGSSWLGWFDPWGQGTLVTVSS >7WEF_2|Chain B[auth E]|Spike protein S1|Severe acute respiratory syndrome coronavirus 2 (2697049) PNITNLCPFDEVFNATRFASVYAWNRKRISNCVADYSVLYNLAPFFTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGNKPCNGVAGFNCYFPLRSYSFRPTYGVGHQPYRVVVLSFELLHAPATVCGPKKS >7WEF_3|Chain C[auth L]|The light chain of Fab XGv289|Homo sapiens (9606) SVLTQPPSASGTPGQRVTIPCSGSSSNIGNNYVYWYQQLPGTAPKLLVYGNNQRPSGVPDRFSVSKSGTSASLAISGLRSEDEADYYCAAWDDGLSGSGWVFGGGTKLTVL