| A3MU81 | DB03566 | 7xif | SPD | A | 302 | e7xifA1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xif | SPD | A | 302 | e7xifA2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xif | SPD | B | 302 | e7xifB1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xif | SPD | B | 302 | e7xifB2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xif | SPD | C | 302 | e7xifC1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xif | SPD | C | 302 | e7xifC2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xif | SPD | D | 302 | e7xifD1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xif | SPD | D | 302 | e7xifD2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xif | SPD | H | 302 | e7xifH1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xif | SPD | H | 302 | e7xifH2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xih | SPD | A | 302 | e7xihA1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xih | SPD | A | 302 | e7xihA2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| A3MU81 | DB03566 | 7xih | SPD | B | 302 | e7xihB1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| A3MU81 | DB03566 | 7xih | SPD | B | 302 | e7xihB2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |