| Q4DA73 | n/a | 5y4q | 8OF | A | 302 | e5y4qA1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 5y4q | 8OF | A | 302 | e5y4qA2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | A | 302 | e5y4qB2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | B | 302 | e5y4qB1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 5y4q | 8OF | B | 302 | e5y4qB2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | C | 302 | e5y4qC1 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |
| Q4DA73 | n/a | 5y4q | 8OF | C | 302 | e5y4qC2 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | C | 302 | e5y4qD1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | D | 302 | e5y4qD1 | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermidine synthase tetramerisation domain | Spermine_synt_N |
| Q4DA73 | n/a | 5y4q | 8OF | D | 302 | e5y4qD2 | Rossmann-like | Rossmann-related | S-adenosyl-L-methionine-dependent methyltransferases | Spermine_synth |