| Q4DA73 | n/a | 4yv0 | 4JW | B | 302 | e4yv0A1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 4yv0 | 4JW | B | 302 | e4yv0A2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 4yv0 | 4JW | B | 302 | e4yv0B1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 4yv0 | 4JW | B | 302 | e4yv0B2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 4yv0 | 4JW | D | 302 | e4yv0C1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 4yv0 | 4JW | D | 302 | e4yv0C2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 4yv0 | 4JW | D | 302 | e4yv0D1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 4yv0 | 4JW | D | 302 | e4yv0D2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |