EC:2.4.1.143; MetaCyc:2.4.1.143-RXN; RHEA:12941; Reactome:R-HSA-4793955 "Defective MGAT2 does not transfer GlcNAc to N-glycans"; Reactome:R-HSA-9694656 "Spike trimer glycoside chains are extended"; reactome:R-HSA-975829 "Addition of a GlcNAc on the alpha 1,4 branch by MGAT2"