>1f4x_H mol:protein length:216 ANTIBODY S-20-4, FAB FRAGMENT, HEAVY CHAIN EVQLEESGGGLVTPGGSLRLSCAASGYVFSTYDMSWVRQTPEKRLEWVAFISSGGGRTS YPDTVKGRFTISRDDAKNTLYLQMSSLQSEDTAMYYCTRHFYAVLDYWGRGTTLTVSSA KTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSD LYTLSSSVTVPSSTWPSETVTCNVAHPASSTKVDKKIVP