2w3s

Crystal Structure of Xanthine Dehydrogenase (desulfo form) from Rhodobacter capsulatus in Complex with Xanthine

Method: X-RAY DIFFRACTION

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1. Protein Identity and Related Structures Protein Identity & Related Structures

XANTHINE DEHYDROGENASE

RHODOBACTER CAPSULATUS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54051） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54051） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54051） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
4	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54051） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O54050_RHOCA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–462； UniProt 1–462 Author chain C； PDBConstruct 1–462； UniProt 1–462 Author chain E； PDBConstruct 1–462； UniProt 1–462 Author chain G； PDBConstruct 1–462； UniProt 1–462

XANTHINE DEHYDROGENASE

RHODOBACTER CAPSULATUS

UniProt O54051

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54050） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54050） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54050） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 2	Consistent with protein count
4	Protein heterocomplex	Heteromer	Protein 2	XANTHINE DEHYDROGENASE × 1 （O54050） FE2/S2 (INORGANIC) CLUSTER × 2 FLAVIN-ADENINE DINUCLEOTIDE × 1 PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER × 1 CALCIUM ION × 1 XANTHINE × 1 HYDROXY(DIOXO)MOLYBDENUM × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O54051_RHOCA
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–777； UniProt 1–777 Author chain D； PDBConstruct 1–777； UniProt 1–777 Author chain F； PDBConstruct 1–777； UniProt 1–777 Author chain H； PDBConstruct 1–777； UniProt 1–777

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	2w3s
Deposition date deposition_date	2008-11-14
Structure title title	Crystal Structure of Xanthine Dehydrogenase (desulfo form) from Rhodobacter capsulatus in Complex with Xanthine
Keywords keywords	;XO, XDH, GOUT, IRON, XANTHINE, IRON-SULFUR, OXIDOREDUCTASE, PURINE METABOLISM, MOLYBDENUM COFACTOR, HYPOXANTHINE, HYPERURICEMIA, METAL-BINDING ;; OXIDOREDUCTASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

2w3s__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2w3s__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2w3s__assembly_3__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	31.54 Å
Rg (electron density)	30.90 Å
Total Rg	31.43 Å
Atom count	9194
Residues	1210
Excluded volume	162300 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2w3s__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2w3s__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2w3s__assembly_3__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`2w3s__assembly_4__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (9)

Entity 1 Entity 1 polymer

Description description	XANTHINE DEHYDROGENASE
Molecular weight formula_weight	49420.5 kDa
EC 编号 ec_number	1.1.1.204
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C,E,G
Atom count atom_count	36858

MEIAFLLNGETRRVRIEDPTQSLLEWLRAEGLTGTKEGCNEGDCGACTVMIRDAAGSRAVNACLMMLPQIAGKALRTIEGIAAPDGRLHPVQQAMIDHHGSQCGFCTPGFIVSMAAAHDRDRKDYDDLLAGNLCRCTGYAPILRAAEAAAGEPPADWLQADAAFTLAQLSSGVRGQTAPAFLPETSDALADWYLAHPEATLIAGGTDVSLWVTKALRDLPEVAFLSHCKDLAQIRETPDGYGIGAGVTIAALRAFAEGPHPALAGLLRRFASEQVRQVATIGGNIANGSPIGDGPPALIAMGASLTLRRGQERRRMPLEDFFLEYRKQDRRPGEFVESVTLPKSAPGLRCYKLSKRFDQDISAVCGCLNLTLKGSKIETARIAFGGMAGVPKRAAAFEAALIGQDFREDTIAAALPLLAQDFTPLSDMRASAAYRMNAAQAMALRYVRELSGEAVAVLEVMP

Source Source

Source organism organism	RHODOBACTER CAPSULATUS
NCBI taxonomy ID ncbi_taxonomy_id	1061
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	XANTHINE DEHYDROGENASE
Molecular weight formula_weight	82978.0 kDa
EC 编号 ec_number	1.1.1.204
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D,F,H

MSVGKPLPHDSARAHVTGQARYLDDLPCPANTLHLAFGLSTEASAAITGLDLEPVRESPGVIAVFTAADLPHDNDASPAPSPEPVLATGEVHFVGQPIFLVAATSHRAARIAARKARITYAPRPAILTLDQALAADSRFEGGPVIWARGDVETALAGAAHLAEGCFEIGGQEHFYLEGQAALALPAEGGVVIHCSSQHPSEIQHKVAHALGLAFHDVRVEMRRMGGGFGGKESQGNHLAIACAVAARATGRPCKMRYDRDDDMVITGKRHDFRIRYRIGADASGKLLGADFVHLARCGWSADLSLPVCDRAMLHADGSYFVPALRIESHRLRTNTQSNTAFRGFGGPQGALGMERAIEHLARGMGRDPAELRALNFYDPPERGGLSAPPSPPEPIATKKTQTTHYGQEVADCVLGELVTRLQKSANFTTRRAEIAAWNSTNRTLARGIALSPVKFGISFTLTHLNQAGALVQIYTDGSVALNHGGTEMGQGLHAKMVQVAAAVLGIDPVQVRITATDTSKVPNTSATAASSGADMNGMAVKDACETLRGRLAGFVAAREGCAARDVIFDAGQVQASGKSWRFAEIVAAAYMARISLSATGFYATPKLSWDRLRGQGRPFLYFAYGAAITEVVIDRLTGENRILRTDILHDAGASLNPALDIGQIEGAYVQGAGWLTTEELVWDHCGRLMTHAPSTYKIPAFSDRPRIFNVALWDQPNREETIFRSKAVGEPPFLLGISAFLALHDACAACGPHWPDLQAPATPEAVLAAVRRAEGRA

Source Source

Source organism organism	RHODOBACTER CAPSULATUS
NCBI taxonomy ID ncbi_taxonomy_id	1061
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

Description description	FE2/S2 (INORGANIC) CLUSTER
Molecular weight formula_weight	175.8 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 4 Entity 4 non-polymer

Description description	FLAVIN-ADENINE DINUCLEOTIDE
Molecular weight formula_weight	785.5 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	PHOSPHONIC ACIDMONO-(2-AMINO-5,6-DIMERCAPTO-4-OXO-3,7,8A,9,10,10A-HEXAHYDRO-4H-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-7-YLMETHYL)ESTER
Molecular weight formula_weight	395.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 7 Entity 7 non-polymer

Description description	XANTHINE
Molecular weight formula_weight	152.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 8 Entity 8 non-polymer

Description description	HYDROXY(DIOXO)MOLYBDENUM
Molecular weight formula_weight	144.9 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 9 Entity 9 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	38

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6. Fold Classification (SCOP + CATH) 64 domains

SCOP 2.08 (24 domains)

Domain ID domain_id	d2w3sa1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.4 — 2Fe-2S ferredoxin-like
Family Family family	d.15.4.0 — automated matches

Domain ID domain_id	d2w3sa2
Class class	a — All alpha proteins
Fold Fold fold	a.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamily	a.56.1 — CO dehydrogenase ISP C-domain like
Family Family family	a.56.1.0 — automated matches

Domain ID domain_id	d2w3sa3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamily	d.145.1 — FAD-binding/transporter-associated domain-like
Family Family family	d.145.1.0 — automated matches

Domain ID domain_id	d2w3sa4
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamily	d.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family family	d.87.2.0 — automated matches

Domain ID domain_id	d2w3sb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamily	d.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family family	d.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like

Domain ID domain_id	d2w3sb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamily	d.133.1 — Molybdenum cofactor-binding domain
Family Family family	d.133.1.1 — Molybdenum cofactor-binding domain

Domain ID domain_id	d2w3sc1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.4 — 2Fe-2S ferredoxin-like
Family Family family	d.15.4.0 — automated matches

Domain ID domain_id	d2w3sc2
Class class	a — All alpha proteins
Fold Fold fold	a.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamily	a.56.1 — CO dehydrogenase ISP C-domain like
Family Family family	a.56.1.0 — automated matches

Domain ID domain_id	d2w3sc3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamily	d.145.1 — FAD-binding/transporter-associated domain-like
Family Family family	d.145.1.0 — automated matches

Domain ID domain_id	d2w3sc4
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamily	d.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family family	d.87.2.0 — automated matches

Domain ID domain_id	d2w3sd1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamily	d.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family family	d.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like

Domain ID domain_id	d2w3sd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamily	d.133.1 — Molybdenum cofactor-binding domain
Family Family family	d.133.1.1 — Molybdenum cofactor-binding domain

Domain ID domain_id	d2w3se1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.4 — 2Fe-2S ferredoxin-like
Family Family family	d.15.4.0 — automated matches

Domain ID domain_id	d2w3se2
Class class	a — All alpha proteins
Fold Fold fold	a.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamily	a.56.1 — CO dehydrogenase ISP C-domain like
Family Family family	a.56.1.0 — automated matches

Domain ID domain_id	d2w3se3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamily	d.145.1 — FAD-binding/transporter-associated domain-like
Family Family family	d.145.1.0 — automated matches

Domain ID domain_id	d2w3se4
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamily	d.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family family	d.87.2.0 — automated matches

Domain ID domain_id	d2w3sf1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamily	d.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family family	d.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like

Domain ID domain_id	d2w3sf2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamily	d.133.1 — Molybdenum cofactor-binding domain
Family Family family	d.133.1.1 — Molybdenum cofactor-binding domain

Domain ID domain_id	d2w3sg1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.4 — 2Fe-2S ferredoxin-like
Family Family family	d.15.4.0 — automated matches

Domain ID domain_id	d2w3sg2
Class class	a — All alpha proteins
Fold Fold fold	a.56 — CO dehydrogenase ISP C-domain like
Superfamily Superfamily superfamily	a.56.1 — CO dehydrogenase ISP C-domain like
Family Family family	a.56.1.0 — automated matches

Domain ID domain_id	d2w3sg3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.145 — FAD-binding/transporter-associated domain-like
Superfamily Superfamily superfamily	d.145.1 — FAD-binding/transporter-associated domain-like
Family Family family	d.145.1.0 — automated matches

Domain ID domain_id	d2w3sg4
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.87 — CO dehydrogenase flavoprotein C-domain-like
Superfamily Superfamily superfamily	d.87.2 — CO dehydrogenase flavoprotein C-terminal domain-like
Family Family family	d.87.2.0 — automated matches

Domain ID domain_id	d2w3sh1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.41 — alpha/beta-Hammerhead
Superfamily Superfamily superfamily	d.41.1 — CO dehydrogenase molybdoprotein N-domain-like
Family Family family	d.41.1.1 — CO dehydrogenase molybdoprotein N-domain-like

Domain ID domain_id	d2w3sh2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.133 — Molybdenum cofactor-binding domain
Superfamily Superfamily superfamily	d.133.1 — Molybdenum cofactor-binding domain
Family Family family	d.133.1.1 — Molybdenum cofactor-binding domain

CATH v4.4 (40 domains)

Domain ID domain_id	2w3sA01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	30 — Beta-grasp domain

Domain ID domain_id	2w3sA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	120 — [2Fe-2S]-binding domain

Domain ID domain_id	2w3sA03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	43 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase, domain 2

Domain ID domain_id	2w3sA04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	465 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w3sA05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	50 — CO dehydrogenase flavoprotein, C-terminal domain

Domain ID domain_id	2w3sB01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily	50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead

Domain ID domain_id	2w3sB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sB03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sB04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sB05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sC01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	30 — Beta-grasp domain

Domain ID domain_id	2w3sC02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	120 — [2Fe-2S]-binding domain

Domain ID domain_id	2w3sC03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	43 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase, domain 2

Domain ID domain_id	2w3sC04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	465 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w3sC05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	50 — CO dehydrogenase flavoprotein, C-terminal domain

Domain ID domain_id	2w3sD01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily	50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead

Domain ID domain_id	2w3sD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sD03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sD04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sD05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sE01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	30 — Beta-grasp domain

Domain ID domain_id	2w3sE02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	120 — [2Fe-2S]-binding domain

Domain ID domain_id	2w3sE03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	43 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase, domain 2

Domain ID domain_id	2w3sE04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	465 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w3sE05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	50 — CO dehydrogenase flavoprotein, C-terminal domain

Domain ID domain_id	2w3sF01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily	50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead

Domain ID domain_id	2w3sF02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sF03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sF04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sF05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sG01
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	30 — Beta-grasp domain

Domain ID domain_id	2w3sG02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	120 — [2Fe-2S]-binding domain

Domain ID domain_id	2w3sG03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	43 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase, domain 2

Domain ID domain_id	2w3sG04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	465 — Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase; domain 3
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2w3sG05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	390 — Enolase-like; domain 1
Homologous superfamily homologous superfamily	50 — CO dehydrogenase flavoprotein, C-terminal domain

Domain ID domain_id	2w3sH01
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1170 — Aldehyde Oxidoreductase; domain 3
Homologous superfamily homologous superfamily	50 — Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead

Domain ID domain_id	2w3sH02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sH03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sH04
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

Domain ID domain_id	2w3sH05
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	365 — Aldehyde Oxidoreductase; domain 4
Homologous superfamily homologous superfamily	10 — Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain

▶

Unit-cell length a length_a	92.830 Å
Unit-cell length b length_b	140.560 Å
Unit-cell length c length_c	158.170 Å
Unit-cell angle α angle_alpha	109.60 °
Unit-cell angle β angle_beta	105.89 °
Unit-cell angle γ angle_gamma	101.18 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.600 Å
Low-resolution limit resolution_low	50.120 Å
R factor r_factor	0.2340
R_work r_work	0.2320
R_free r_free	0.2840

Crystal Structure of Xanthine Dehydrogenase (desulfo form) from Rhodobacter capsulatus in Complex with Xanthine

1. Protein Identity and Related Structures Protein Identity & Related Structures

XANTHINE DEHYDROGENASE

State in the Current Structure

Other States of the Same Protein in the Database

XANTHINE DEHYDROGENASE

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2w3s__assembly_3__model_1

2w3s__assembly_3__model_1 | I(q)

2w3s__assembly_3__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (9)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 water

6. Fold Classification (SCOP + CATH) 64 domains

SCOP 2.08 (24 domains)

CATH v4.4 (40 domains)

7. Citations (1)

Crystal Structure of Xanthine Dehydrogenase (desulfo form) from Rhodobacter capsulatus in Complex with Xanthine

1. Protein Identity and Related Structures Protein Identity & Related Structures

XANTHINE DEHYDROGENASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

XANTHINE DEHYDROGENASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2w3s__assembly_3__model_1

2w3s__assembly_3__model_1 | I(q)

2w3s__assembly_3__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (9)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 water

6. Fold Classification (SCOP + CATH) 64 domains

SCOP 2.08 (24 domains)

CATH v4.4 (40 domains)

7. Citations (1)