>5b4m_H mol:protein length:221 Fab heavy chain
DVKLVESGGGLVNLGGSLKLSCAASGFTFSRYYMSWVRQTPEKRLELVAAINHNSGRTYYSDTVKGRFTISRDNAKNTLYLQMSSLKSEDTALYYCTRHPLIYHGNYLDYWGQGTTLTVSSAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSTWPSETVTCNVAHPASSTKVDKKIVPR