passages.id: split_4_test_396_passage
passages.type: progene_text
passages.text: Oligomerization could be reversed by high suramin concentrations , but 8-aminonaphthalene-1,3,6- trisulfonate ( ANTS2- ) , which mimics half a suramin molecule , could not compete with suramin binding and oligomerization suggesting that the drug also binds nonionically to the proteins .