Annotations: 3HN2

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ApbA_C	e3hn2A1	A: alpha arrays	X: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	H: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	T: 6-phosphogluconate dehydrogenase C-terminal domain-like	F: ApbA_C	ECOD (1.6)
A	ApbA	e3hn2A2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: ApbA	ECOD (1.6)
B	ApbA_C	e3hn2B1	A: alpha arrays	X: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	H: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	T: 6-phosphogluconate dehydrogenase C-terminal domain-like	F: ApbA_C	ECOD (1.6)
B	ApbA	e3hn2B2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: ApbA	ECOD (1.6)
C	ApbA_C	e3hn2C1	A: alpha arrays	X: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	H: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	T: 6-phosphogluconate dehydrogenase C-terminal domain-like	F: ApbA_C	ECOD (1.6)
C	ApbA	e3hn2C2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: ApbA	ECOD (1.6)
D	ApbA_C	e3hn2D1	A: alpha arrays	X: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	H: 6-phosphogluconate dehydrogenase C-terminal domain-like (From Topology)	T: 6-phosphogluconate dehydrogenase C-terminal domain-like	F: ApbA_C	ECOD (1.6)
D	ApbA	e3hn2D2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: ApbA	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	1.10.1040.10	Mainly Alpha	Orthogonal Bundle	N-(1-d-carboxylethyl)-l-norvaline Dehydrogenase	domain 2	CATH (4.3.0)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	1.10.1040.10	Mainly Alpha	Orthogonal Bundle	N-(1-d-carboxylethyl)-l-norvaline Dehydrogenase	domain 2	CATH (4.3.0)
C	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
C	1.10.1040.10	Mainly Alpha	Orthogonal Bundle	N-(1-d-carboxylethyl)-l-norvaline Dehydrogenase	domain 2	CATH (4.3.0)
D	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
D	1.10.1040.10	Mainly Alpha	Orthogonal Bundle	N-(1-d-carboxylethyl)-l-norvaline Dehydrogenase	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02558	Ketopantoate reductase PanE/ApbA (ApbA)	Ketopantoate reductase PanE/ApbA	-	Family
A, B, C, D	PF08546	Ketopantoate reductase PanE/ApbA C terminal (ApbA_C)	Ketopantoate reductase PanE/ApbA C terminal	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	2-dehydropantoate 2-reductase	oxidoreductase activity oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on CH-OH group of donors 2-dehydropantoate 2-reductase activity catalytic activity	oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process vitamin biosynthetic process organic acid biosynthetic process organic acid metabolic process carboxylic acid biosynthetic process cellular nitrogen compound biosynthetic process organic substance metabolic process organic substance biosynthetic process nitrogen compound metabolic process small molecule metabolic process amide metabolic process water-soluble vitamin metabolic process oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process vitamin biosynthetic process organic acid biosynthetic process organic acid metabolic process carboxylic acid biosynthetic process cellular nitrogen compound biosynthetic process organic substance metabolic process organic substance biosynthetic process nitrogen compound metabolic process small molecule metabolic process amide metabolic process water-soluble vitamin metabolic process pantothenate metabolic process organonitrogen compound metabolic process water-soluble vitamin biosynthetic process monocarboxylic acid biosynthetic process small molecule biosynthetic process cellular metabolic process carboxylic acid metabolic process amide biosynthetic process cellular nitrogen compound metabolic process vitamin metabolic process cellular modified amino acid metabolic process biosynthetic process cellular modified amino acid biosynthetic process pantothenate biosynthetic process metabolic process cellular process monocarboxylic acid metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR003710	Ketopantoate reductase ApbA/PanE	Family
A, B, C, D	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B, C, D	IPR013328	6-phosphogluconate dehydrogenase, domain 2	Homologous Superfamily
A, B, C, D	IPR013752	Ketopantoate reductase, C-terminal domain	Domain
A, B, C, D	IPR013332	Ketopantoate reductase, N-terminal domain	Domain
A, B, C, D	IPR008927	6-phosphogluconate dehydrogenase-like, C-terminal domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.