| Q8II73 | DB03566 | 2pwp | SPD | A | 401 | e2pwpA2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q8II73 | DB03566 | 2pwp | SPD | A | 401 | e2pwpA3 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 2pwp | SPD | B | 401 | e2pwpB2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q8II73 | DB03566 | 2pwp | SPD | B | 401 | e2pwpB3 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 2pwp | SPD | C | 401 | e2pwpC2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q8II73 | DB03566 | 2pwp | SPD | C | 401 | e2pwpC3 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 4cxm | SPD | A | 640 | e4cxmA1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 4cxm | SPD | A | 640 | e4cxmA2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q8II73 | DB03566 | 4cxm | SPD | B | 640 | e4cxmB1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 4cxm | SPD | B | 640 | e4cxmB2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q8II73 | DB03566 | 4cxm | SPD | C | 640 | e4cxmC1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q8II73 | DB03566 | 4cxm | SPD | C | 640 | e4cxmC2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |