Catalyzes the PLP-dependent transamination of 2-deoxy-scyllo-inosose (2-DOI) to form 2-deoxy-scyllo-inosamine (2-DOIA) using L-glutamine as the amino donor. Also catalyzes the transamination of 3-amino-2,3-dideoxy-scyllo-inosose (keto-2-DOIA) into 2-deoxystreptamine (2-DOS). 2-deoxy-L-scyllo-inosose + L-glutamine = 2-deoxy-scyllo-inosamine + 2-oxoglutaramate 3-amino-2,3-dideoxy-scyllo-inosose + L-glutamine = 2-deoxystreptamine + 2-oxoglutaramate Metabolic intermediate biosynthesis; 2-deoxystreptamine biosynthesis; 2-deoxystreptamine from D-glucose 6-phosphate: step 2/4. Antibiotic biosynthesis; gentamicin biosynthesis. Belongs to the DegT/DnrJ/EryC1 family. L-glutamine:2-deoxy-scyllo-inosose/scyllo-inosose aminotransferase subfamily.