Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8041819 3000118 SCOP2B (2022-06-29)
BSCOP2 FamilySpermidine synthase 8029440 4003319 SCOP2 (2022-06-29)
BSCOP2 SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8041819 3000118 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ASpermine_synt_N_2e1uirA2 A: beta meandersX: Spermidine synthase tetramerisation domain (From Topology)H: Spermidine synthase tetramerisation domain (From Topology)T: Spermidine synthase tetramerisation domainF: Spermine_synt_N_2ECOD (1.6)
ASpermine_synthe1uirA3 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Spermine_synthECOD (1.6)
BSpermine_synt_N_2e1uirB3 A: beta meandersX: Spermidine synthase tetramerisation domain (From Topology)H: Spermidine synthase tetramerisation domain (From Topology)T: Spermidine synthase tetramerisation domainF: Spermine_synt_N_2ECOD (1.6)
BSpermine_synthe1uirB2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Spermine_synthECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A2.30.140.10 Mainly Beta Roll Spermidine Synthase Chain: A, domain 2CATH (4.3.0)
A3.40.50.150 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Vaccinia Virus protein VP39CATH (4.3.0)
B2.30.140.10 Mainly Beta Roll Spermidine Synthase Chain: A, domain 2CATH (4.3.0)
B3.40.50.150 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold Vaccinia Virus protein VP39CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF17284Spermidine synthase tetramerisation domain (Spermine_synt_N)Spermidine synthase tetramerisation domainThis domain represents the N-terminal tetramerization domain from spermidine synthase.Domain
A, B
PF01564Spermine/spermidine synthase domain (Spermine_synth)Spermine/spermidine synthase domainSpermine and spermidine are polyamines. This family includes spermidine synthase that catalyses the fifth (last) step in the biosynthesis of spermidine from arginine, and spermine synthase.Domain