>4xx1_M mol:protein length:238 Fab1 heavy chain
QVQLVESGGGVVQPGRSLRLSCAASGFTFSSYGMHWVRQAPGKGLEWVAVIWYDGSNKFYEDSVKGRFTISRDNSKNTLYLQMDSLRAEDTAVYYCAREGAAVRSFYYSYYGMDVWGQGTTVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSHSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCAAAENLYFQ