4XQG | pdb_00004xqg

Crystal Structure of the Homospermidine Synthase (HSS) variant E237Q from Blastochloris viridis in Complex with NAD.

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e4xqgB1	A: CARF (CRISPR-associated Rossmann fold) domains	X: HTH	H: winged helix domain	T: DUF433	F:	ECOD (20:10:01)
A		e4xqgA1	A: CARF (CRISPR-associated Rossmann fold) domains	X: HTH	H: winged helix domain	T: DUF433	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	3.30.360.30	Alpha Beta	2-Layer Sandwich	Dihydrodipicolinate Reductase	domain 2	CATH (4.3.0)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	3.30.360.30	Alpha Beta	2-Layer Sandwich	Dihydrodipicolinate Reductase	domain 2	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Homospermidine synthase	homospermidine synthase (spermidine-specific) activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity homospermidine synthase activity	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR005097	Saccharopine dehydrogenase, NADP binding domain	Domain
A, B	IPR023181	Homospermidine synthase-like, C-terminal	Homologous Superfamily
A, B	IPR032095	Saccharopine dehydrogenase-like, C-terminal	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.