>4d9l_J mol:protein length:223 Heavy chain of Fab fragment of anti-HIV1 gp120 V2 mAb 697QVQLVQSGAEVKKPGSSVKVSCKASGGNFNTYTISWVRQAPGQGLEWMGRIIPIFGIVNPAQKFPGRVTINVDKSTNTAYMELSSLRSEDTAVYYCATSGVGLHFGYFDYWGQGTQVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKS