ALG3T
| Group/type | Defect and defective gene | Acronym | |
|---|---|---|---|
| Group I | Defects in N-linked protein glycosylation due to deficiencies in the assembly of the dolichylpyrophosphate linked oligosaccharides and/or its transfer to asparagine residues on the nascent polypeptides. | CDG-I | |
| Type Ia | Phosphomannomutase | PMM2 | CDG-Ia |
| Type Ib | Phosphomannose isomerase | MPI | CDG-Ib |
| Type Ic | Dolichyl-PP-Glc:Man9GlcNAc2-PP-dolichyl alpha1,3-glucosyltransferase | ALG6 | CDG-Ic |
| Type Id | Dolichyl-PP-Man:Man5GlcNAc2-PP-dolichyl alpha1,3-mannosyl-transferase | ALG3 | CGD-Id |
| Type Ie | Dolichol-P-Man synthase 1 | DPM1 | CDG-Ie |
| Type If | Mannose-P-dolichol utilization defect1 | MPDU1 | CDG-If |
| Group II | Defects in the processing of N-glycans or addition of other glycans to proteins | CDG-II | |
| Type IIa | UDP-GlcNAc:alpha-6-D-mannoside beta-1,2-N- acetylglucosaminyltransferase II (GnT II) | MGAT2 | CDG-IIa |
| Type IIb | Glucosidase I | GCS1 | CDG-IIb |
| ype IIc | GDP-fucose transporter 1 | FUCT1 | CDG-IIc |
| Type x | Genetic basis unknown | CDG-x | |