Annotations: 3AN1

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	FAD_binding_4	e3an1B3	A: alpha bundles	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: FAD_binding_4	ECOD (develop294)
B	Bcl-2,BH4	e3an1B13	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Bcl-2,BH4	ECOD (develop294)
B	TPP_enzyme_C	e3an1B7	A: alpha bundles	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: TPP_enzyme_C	ECOD (develop294)
B	Glyco_hydro_32C	e3an1B8	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: Glyco_hydro_32C	ECOD (develop294)
A	Ribosomal_S8	e3an1A1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_S8	ECOD (develop294)
A	Bcl-2,BH4	e3an1A13	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Bcl-2,BH4	ECOD (develop294)
A	TPP_enzyme_C	e3an1A6	A: alpha bundles	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: TPP_enzyme_C	ECOD (develop294)
A	Glyco_hydro_32C	e3an1A7	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: Glyco_hydro_32C	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.10.20.30	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Beta-grasp domain	CATH (4.3.0)
B	1.10.150.120	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
B	3.30.43.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 2	CATH (4.3.0)
B	3.30.465.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 3	CATH (4.3.0)
B	3.30.390.50	Alpha Beta	2-Layer Sandwich	Enolase-like	domain 1	CATH (4.3.0)
B	3.30.365.10	Alpha Beta	2-Layer Sandwich	Aldehyde Oxidoreductase	domain 4	CATH (4.3.0)
B	3.90.1170.50	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
A	3.10.20.30	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Beta-grasp domain	CATH (4.3.0)
A	1.10.150.120	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
A	3.30.43.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 2	CATH (4.3.0)
A	3.30.465.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 3	CATH (4.3.0)
A	3.30.390.50	Alpha Beta	2-Layer Sandwich	Enolase-like	domain 1	CATH (4.3.0)
A	3.30.365.10	Alpha Beta	2-Layer Sandwich	Aldehyde Oxidoreductase	domain 4	CATH (4.3.0)
A	3.90.1170.50	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Source
A, B	PF00941	FAD binding domain in molybdopterin dehydrogenase (FAD_binding_5)	FAD binding domain in molybdopterin dehydrogenase	Domain
A, B	PF01799	[2Fe-2S] binding domain (Fer2_2)	[2Fe-2S] binding domain	Domain
A, B	PF01315	Aldehyde oxidase and xanthine dehydrogenase, a/b hammerhead domain (Ald_Xan_dh_C)	Aldehyde oxidase and xanthine dehydrogenase, a/b hammerhead domain	Domain
A, B	PF20256	Molybdopterin cofactor-binding domain (MoCoBD_2)	Molybdopterin cofactor-binding domain	Domain
A, B	PF03450	CO dehydrogenase flavoprotein C-terminal domain (CO_deh_flav_C)	CO dehydrogenase flavoprotein C-terminal domain	Domain
A, B	PF02738	Molybdopterin cofactor-binding domain (MoCoBD_1)	Molybdopterin cofactor-binding domain	Domain
A, B	PF00111	2Fe-2S iron-sulfur cluster binding domain (Fer2)	2Fe-2S iron-sulfur cluster binding domain	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Xanthine dehydrogenase/oxidase	oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups hypoxanthine oxidase activity oxidoreductase activity, acting on CH or CH2 groups, oxygen as acceptor catalytic activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity oxidoreductase activity, acting on CH or CH2 groups hypoxanthine oxidase activity oxidoreductase activity, acting on CH or CH2 groups, oxygen as acceptor catalytic activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding anion binding nucleotide binding heterocyclic compound binding small molecule binding hypoxanthine dehydrogenase activity oxidoreductase activity, acting on CH or CH2 groups, NAD or NADP as acceptor cation binding transition metal ion binding iron ion binding metal ion binding molybdopterin cofactor binding identical protein binding protein binding oxidoreductase activity, acting on other nitrogenous compounds as donors, cytochrome as acceptor oxidoreductase activity, acting on other nitrogenous compounds as donors nitrite reductase (NO-forming) activity nitrite reductase activity xanthine dehydrogenase activity protein homodimerization activity protein dimerization activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding metal cluster binding xanthine oxidase activity	response to stimulus response to chemical response to nitrogen compound response to azide ribose phosphate metabolic process ribonucleotide catabolic process catabolic process organophosphate catabolic process carbohydrate derivative metabolic process nucleoside phosphate catabolic process purine ribonucleoside monophosphate catabolic process purine nucleoside monophosphate catabolic process nucleobase-containing compound metabolic process purine ribonucleoside monophosphate metabolic process response to stimulus response to chemical response to nitrogen compound response to azide ribose phosphate metabolic process ribonucleotide catabolic process catabolic process organophosphate catabolic process carbohydrate derivative metabolic process nucleoside phosphate catabolic process purine ribonucleoside monophosphate catabolic process purine nucleoside monophosphate catabolic process nucleobase-containing compound metabolic process purine ribonucleoside monophosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine nucleoside monophosphate metabolic process phosphate-containing compound metabolic process GMP metabolic process small molecule metabolic process ribonucleoside monophosphate catabolic process purine ribonucleotide catabolic process phosphorus metabolic process nucleoside monophosphate metabolic process nucleotide catabolic process nucleoside phosphate metabolic process purine nucleotide catabolic process carbohydrate derivative catabolic process nucleoside monophosphate catabolic process primary metabolic process purine-containing compound catabolic process nucleotide metabolic process GMP catabolic process nucleobase-containing compound catabolic process purine-containing compound metabolic process organophosphate metabolic process metabolic process cellular process purine ribonucleotide metabolic process purine nucleobase metabolic process xanthine metabolic process purine nucleobase catabolic process xanthine catabolic process nucleobase catabolic process nucleobase metabolic process purine deoxyribonucleoside monophosphate catabolic process deoxyribonucleoside monophosphate catabolic process deoxyribonucleotide catabolic process dAMP catabolic process dAMP metabolic process deoxyribose phosphate catabolic process deoxyribonucleotide metabolic process purine deoxyribonucleotide catabolic process 2'-deoxyribonucleotide metabolic process purine deoxyribonucleoside monophosphate metabolic process purine deoxyribonucleotide metabolic process hypoxanthine catabolic process hypoxanthine metabolic process deoxyribonucleoside metabolic process purine nucleoside catabolic process purine deoxyribonucleoside catabolic process deoxyguanosine catabolic process purine deoxyribonucleoside metabolic process glycosyl compound catabolic process nucleoside metabolic process nucleobase-containing small molecule catabolic process nucleoside catabolic process deoxyribonucleoside catabolic process small molecule catabolic process purine nucleoside metabolic process developmental process regulation of body fluid levels secretion transport mammary gland development gland development animal organ development biological regulation establishment of localization body fluid secretion localization anatomical structure development lactation regulation of biological quality AMP metabolic process AMP catabolic process dGMP catabolic process dGMP metabolic process response to hydrogen peroxide response to oxidative stress response to stress response to oxygen-containing compound response to reactive oxygen species response to peptide cellular response to interleukin-1 response to cytokine cellular response to cytokine stimulus response to interleukin-1 deoxyadenosine catabolic process deoxyadenosine metabolic process guanine metabolic process guanine catabolic process cellular component biogenesis cellular component organization metallo-sulfur cluster assembly cellular component assembly iron-sulfur cluster assembly cellular component organization or biogenesis deoxyinosine catabolic process deoxyinosine metabolic process cellular response to tumor necrosis factor response to tumor necrosis factor IMP metabolic process IMP catabolic process response to carbon monoxide purine ribonucleoside metabolic process adenosine catabolic process adenosine metabolic process ribonucleoside catabolic process purine ribonucleoside catabolic process ribonucleoside metabolic process allantoin metabolic process inosine catabolic process inosine metabolic process response to metal ion response to aluminum ion biological process involved in interspecies interaction between organisms response to lipid response to other organism response to external stimulus response to lipopolysaccharide response to biotic stimulus response to bacterium response to external biotic stimulus response to molecule of bacterial origin multicellular organismal process epithelium development regulation of biological process regulation of multicellular organismal development regulation of cellular process cellular developmental process regulation of developmental process regulation of cell differentiation tissue development epithelial cell differentiation regulation of epithelial cell differentiation multicellular organism development cell differentiation regulation of multicellular organismal process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle organelle peroxisome microbody intracellular membrane-bounded organelle endomembrane system sarcoplasm endoplasmic reticulum sarcoplasmic reticulum cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle organelle peroxisome microbody intracellular membrane-bounded organelle endomembrane system sarcoplasm endoplasmic reticulum sarcoplasmic reticulum extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006058	2Fe-2S ferredoxin, iron-sulphur binding site	Binding Site
A, B	IPR002888	[2Fe-2S]-binding	Domain
A, B	IPR036318	FAD-binding, type PCMH-like superfamily	Homologous Superfamily
A, B	IPR016208	Aldehyde oxidase/xanthine dehydrogenase-like	Family
A, B	IPR012675	Beta-grasp domain superfamily	Homologous Superfamily
A, B	IPR036010	2Fe-2S ferredoxin-like superfamily	Homologous Superfamily
A, B	IPR002346	Molybdopterin dehydrogenase, FAD-binding	Domain
A, B	IPR036884	[2Fe-2S]-binding domain superfamily	Homologous Superfamily
A, B	IPR005107	CO dehydrogenase flavoprotein, C-terminal	Domain
A, B	IPR016167	FAD-binding, type PCMH, subdomain 1	Homologous Superfamily
A, B	IPR001041	2Fe-2S ferredoxin-type iron-sulfur binding domain	Domain
A, B	IPR046867	Aldehyde oxidase/xanthine dehydrogenase, second molybdopterin binding domain	Domain
A, B	IPR036683	CO dehydrogenase flavoprotein, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR000674	Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead	Domain
A, B	IPR022407	Oxidoreductase, molybdopterin binding site	Binding Site
A, B	IPR036856	Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead superfamily	Homologous Superfamily
A, B	IPR037165	Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain superfamily	Homologous Superfamily
A, B	IPR016166	FAD-binding domain, PCMH-type	Domain
A, B	IPR014307	Xanthine dehydrogenase, small subunit	Domain
A, B	IPR016169	FAD-binding, type PCMH, subdomain 2	Homologous Superfamily
A, B	IPR008274	Aldehyde oxidase/xanthine dehydrogenase, first molybdopterin binding domain	Domain