6O64

Crystal Structure of Arabidopsis thaliana Spermidine Synthase isoform 2 (AtSPDS2)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d6o64b_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
E	d6o64e_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
A	d6o64a_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
C	d6o64c_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
D	d6o64d_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
F	d6o64f_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
G	d6o64g_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
H	d6o64h_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	Mouse-ear cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Spermine_synt_N	e6o64B1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
B	Spermine_synth	e6o64B2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
E	Spermine_synt_N	e6o64E1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
E	Spermine_synth	e6o64E2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
A	Spermine_synt_N	e6o64A1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
A	Spermine_synth	e6o64A2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
C	Spermine_synt_N	e6o64C1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
C	Spermine_synth	e6o64C2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
D	Spermine_synt_N	e6o64D2	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
D	Spermine_synth	e6o64D1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
F	Spermine_synt_N	e6o64F1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
F	Spermine_synth	e6o64F2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
G	Spermine_synt_N	e6o64G1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
G	Spermine_synth	e6o64G2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)
H	Spermine_synt_N	e6o64H1	A: beta meanders	X: Spermidine synthase tetramerisation domain (From Topology)	H: Spermidine synthase tetramerisation domain (From Topology)	T: Spermidine synthase tetramerisation domain	F: Spermine_synt_N	ECOD (1.6)
H	Spermine_synth	e6o64H2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Spermine_synth	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
E	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
E	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
A	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
A	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
C	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
C	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
D	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
D	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
F	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
F	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
G	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
G	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
H	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (utative)
H	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H	PF17284	Spermidine synthase tetramerisation domain (Spermine_synt_N)	Spermidine synthase tetramerisation domain	This domain represents the N-terminal tetramerization domain from spermidine synthase.	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	PF01564	Spermine/spermidine synthase domain (Spermine_synth)	Spermine/spermidine synthase domain	Spermine 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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	Spermidine synthase 2	spermidine synthase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity	polyamine metabolic process amine metabolic process biogenic amine biosynthetic process spermidine metabolic process biosynthetic process amine biosynthetic process polyamine biosynthetic process metabolic process cellular process spermidine biosynthetic process biogenic amine metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle mitochondrion organelle intracellular membrane-bounded organelle cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR030668	Spermidine/spermine synthase, eukaryotes	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR001045	Spermidine/spermine synthases	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR030374	Polyamine biosynthesis domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR037163	Spermidine synthase, tetramerisation domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR030373	Polyamine biosynthesis domain, conserved site	Conserved Site
A, B, C, D, E A, B, C, D, E, F, G, H	IPR035246	Spermidine synthase, tetramerisation domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.