Annotations: 4NTD

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	RNA_pol_Rpb1_5	e4ntdA1	A: a/b three-layered sandwiches	X: TIM beta/alpha-barrel	H: TIM barrels	T: TIM barrels	F: RNA_pol_Rpb1_5	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.50.50.60	Alpha Beta	3-Layer(bba) Sandwich	FAD/NAD(P)-binding domain	FAD/NAD(P)-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07992	Pyridine nucleotide-disulphide oxidoreductase (Pyr_redox_2)	Pyridine nucleotide-disulphide oxidoreductase	This family includes both class I and class II oxidoreductases and also NADH oxidases and peroxidases. This domain is actually a small NADH binding domain within a larger FAD binding domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Thioredoxin reductase	thioredoxin-disulfide reductase (NADPH) activity protein-disulfide reductase [NAD(P)H] activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding thioredoxin-disulfide reductase (NADPH) activity protein-disulfide reductase [NAD(P)H] activity oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity disulfide oxidoreductase activity antioxidant activity catalytic activity, acting on a protein protein-disulfide reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023753	FAD/NAD(P)-binding domain	Domain
A	IPR050097	Ferredoxin--NADP reductase type 2	Family
A	IPR036188	FAD/NAD(P)-binding domain superfamily	Homologous Superfamily

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.