>5yfi_H mol:protein length:253 Heavy chain of Fab fragment MEWRWIFLFLLSGTTGVHSEIQLQQSGPELVKPGASVKVSCKASGFPFSTYNIYWVIQS HGKSLEWIGYIDPYNGGTSYNQKFRGKATLTVDKSSSTAYMHLNSLTSEDSAVYYCARR WYTYDGDWFAYWGQGTLVTVSAAKTTAPSVYPLAPVCGDTTGSSVTLGCLVKGYFPEPV TLTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVTSSTWPSQSITCNVAHPASSTKVDKK IEPRGPTIKPCPPCKCP