passages.id: split_7_validation_1650_passage
passages.type: progene_text
passages.text: Substituting Asn residue with Gln at the single glycosylation site within apoB-17 ( N(158) ) decreased its secretion efficiency to a level equivalent to that of wild - type apoB-17 treated with tunicamycin , but had little effect on its synthesis or intracellular distribution .