Annotations: 2Q9U

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2q9ua2	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Flavodoxin-related	Nitric oxide reductase C-terminal domain	(Giardia intestinalis ) [TaxId: 5741 ],	SCOPe (2.08)
A	d2q9ua1	Alpha and beta proteins (a+b)	Metallo-hydrolase/oxidoreductase	Metallo-hydrolase/oxidoreductase	ROO N-terminal domain-like	Nitric oxide reductase N-terminal domain	(Giardia intestinalis ) [TaxId: 5741 ],	SCOPe (2.08)
B	d2q9ub2	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Flavodoxin-related	Nitric oxide reductase C-terminal domain	(Giardia intestinalis ) [TaxId: 5741 ],	SCOPe (2.08)
B	d2q9ub1	Alpha and beta proteins (a+b)	Metallo-hydrolase/oxidoreductase	Metallo-hydrolase/oxidoreductase	ROO N-terminal domain-like	Nitric oxide reductase N-terminal domain	(Giardia intestinalis ) [TaxId: 5741 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Lactamase_B_1	e2q9uA1	A: a+b four layers	X: Metallo-hydrolase/oxidoreductase (From Topology)	H: Metallo-hydrolase/oxidoreductase (From Topology)	T: Metallo-hydrolase/oxidoreductase	F: Lactamase_B_1	ECOD (1.6)
A	Flavodoxin_1	e2q9uA2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: Flavodoxin_1	ECOD (1.6)
B	Lactamase_B_1	e2q9uB1	A: a+b four layers	X: Metallo-hydrolase/oxidoreductase (From Topology)	H: Metallo-hydrolase/oxidoreductase (From Topology)	T: Metallo-hydrolase/oxidoreductase	F: Lactamase_B_1	ECOD (1.6)
B	Flavodoxin_1	e2q9uB2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: Flavodoxin_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.60.15.10	Alpha Beta	4-Layer Sandwich	Metallo-beta-lactamase	Chain A	CATH (4.3.0)
A	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)
B	3.60.15.10	Alpha Beta	4-Layer Sandwich	Metallo-beta-lactamase	Chain A	CATH (4.3.0)
B	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF19583	ODP family beta lactamase (ODP)	ODP family beta lactamase	The ODP (Oxygen-binding Di-iron Protein) domain is a distinct member of the metallo-beta-lactamase superfamily recruited to various bacterial and archaeal signal transduction pathways, including chemotaxis, to function as oxygen and iron sensors (1). ...	The ODP (Oxygen-binding Di-iron Protein) domain is a distinct member of the metallo-beta-lactamase superfamily recruited to various bacterial and archaeal signal transduction pathways, including chemotaxis, to function as oxygen and iron sensors (1). ODP was shown to act as a sensor for chemotactic responses to both iron and oxygen in the human pathogen Treponema denticola (Td). The ODP di-iron site binds oxygen at high affinity to reversibly form an unusually stable peroxo adduct.	Domain
A, B	PF00258	Flavodoxin (Flavodoxin_1)	Flavodoxin	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	A-type flavoprotein	binding nucleotide binding FMN binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding electron transfer activity cation binding metal ion binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR045761	ODP domain	Domain
A, B	IPR016440	Rubredoxin-oxygen oxidoreductase	Family
A, B	IPR036866	Ribonuclease Z/Hydroxyacylglutathione hydrolase-like	Homologous Superfamily
A, B	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily
A, B	IPR001279	Metallo-beta-lactamase	Domain
A, B	IPR008254	Flavodoxin/nitric oxide synthase	Domain

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.