passages.id: split_1_test_644_passage
passages.type: progene_text
passages.text: An in vitro GlcNAc transferase assay by using a soluble alpha4GnT revealed that alpha1,4 - linked GlcNAc residues are transferred most efficiently to core 2 branched O-glycans ( Galbeta1 --> 4GlcNAcbeta1 --> 6 ( Galbeta1 --> 3 ) GalNAc ) , forming GlcNAcalpha1 --> 4Galbeta1 --> 4GlcNAcbeta1 --> 6 ( GlcNAca lpha1 --> 4Galbeta1- -> 3 ) GalNAc .