>3vi4_H mol:protein length:218  SG/19 Fab fragment (Heavy chain)
QVHLQQSGAELMKPGASVKISCKATGYTFTSYWIEWVKQRPGHGLEWLGEILPGSGYIH
YNEKFKGKATFTTDTSSNTAYMQLSSLTSEDSAVYYCSRALALYAMDYWGQGTSVTVSS
AKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQS
DLYTLSSSVTVPSSTWPSETVTCNVAHPASSTKVDKKIVPR