Annotations: 2ZSU

Crystal structure of spermidine synthase from Pyrococcus horikoshii OT3, P1 form

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
F	d2zsuf_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
E	d2zsue_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
D	d2zsud_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
C	d2zsuc_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
B	d2zsub_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)
A	d2zsua_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Spermidine synthase	automated matches	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8061333	3000118	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	Cupin_2	e2zsuF2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)
E	Cupin_2	e2zsuE2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)
D	Cupin_2	e2zsuD2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)
C	Cupin_2	e2zsuC2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)
B	Cupin_2	e2zsuB2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)
A	Cupin_2	e2zsuA2	A: alpha arrays	X: DEATH domain	H: omega toxin-related	T: Scorpion toxin-like	F: Cupin_2	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
F	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
E	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
E	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
D	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
D	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
C	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
C	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
B	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
A	2.30.140.10	Mainly Beta	Roll	Spermidine Synthase	Chain: A, domain 2	CATH (4.3.0)
A	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)

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	spermidine synthase	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

InterPro: Protein Family Classification InterPro Database Homepage

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