passages.id: split_6_test_2382_passage
passages.type: progene_text
passages.text: This interaction was stimulated by the addition of Ran ; moreover , Ran . GDP , Ran . GTP , and Ran without nucleotide could all stimulate complex formation between RanBP3 and RCC1 even though binding of Ran . GDP to RanBP3 alone was undetectable .