passages.id: split_1_test_1617_passage
passages.type: progene_text
passages.text: The As - rel1 protein is a typical Rel / NF-kappaB family member , containing a Rel homology domain , a nuclear localization sequence and a C - terminal putative transcription activation domain , while the As - rel2 protein is a novel Rel / NF-kappaB family member that lacks a nuclear localization sequence and the C - terminal domain .