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1r27

Crystal Structure of NarGH complex

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Respiratory nitrate reductase 1 alpha chain

OrganismNot specified

UniProt P09152

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Respiratory nitrate reductase 1 beta chain × 1 （P11349） MOLYBDENUM ATOM × 1 IRON/SULFUR CLUSTER × 4 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 2 FE3-S4 CLUSTER × 1 water × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 2 Respiratory nitrate reductase 1 beta chain × 1 （P11349） MOLYBDENUM ATOM × 1 IRON/SULFUR CLUSTER × 4 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 2 FE3-S4 CLUSTER × 1 water × 2 Consistent with protein count
3 Protein heterocomplex Heteromer Protein 16 Respiratory nitrate reductase 1 beta chain × 8 （P11349） MOLYBDENUM ATOM × 8 IRON/SULFUR CLUSTER × 32 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 16 FE3-S4 CLUSTER × 8 water × 16 Consistent with protein count
4 Protein heterocomplex Heteromer Protein 8 Respiratory nitrate reductase 1 beta chain × 4 （P11349） MOLYBDENUM ATOM × 4 IRON/SULFUR CLUSTER × 16 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 8 FE3-S4 CLUSTER × 4 water × 8 Consistent with protein count
5 Protein heterocomplex Heteromer Protein 4 Respiratory nitrate reductase 1 beta chain × 2 （P11349） MOLYBDENUM ATOM × 2 IRON/SULFUR CLUSTER × 8 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 4 FE3-S4 CLUSTER × 2 water × 4 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1q16 1q16 1q16 1q16 1r27 1r27 1r27 1r27 1r27 1siw 1siw 1siw

37 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name NARG_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–1246； UniProt 1–1246 Author chain C； PDBConstruct 1–1246； UniProt 1–1246

Respiratory nitrate reductase 1 beta chain

OrganismNot specified

UniProt P11349

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Respiratory nitrate reductase 1 alpha chain × 1 （P09152） MOLYBDENUM ATOM × 1 IRON/SULFUR CLUSTER × 4 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 2 FE3-S4 CLUSTER × 1 water × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 2 Respiratory nitrate reductase 1 alpha chain × 1 （P09152） MOLYBDENUM ATOM × 1 IRON/SULFUR CLUSTER × 4 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 2 FE3-S4 CLUSTER × 1 water × 2 Consistent with protein count
3 Protein heterocomplex Heteromer Protein 16 Respiratory nitrate reductase 1 alpha chain × 8 （P09152） MOLYBDENUM ATOM × 8 IRON/SULFUR CLUSTER × 32 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 16 FE3-S4 CLUSTER × 8 water × 16 Consistent with protein count
4 Protein heterocomplex Heteromer Protein 8 Respiratory nitrate reductase 1 alpha chain × 4 （P09152） MOLYBDENUM ATOM × 4 IRON/SULFUR CLUSTER × 16 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 8 FE3-S4 CLUSTER × 4 water × 8 Consistent with protein count
5 Protein heterocomplex Heteromer Protein 4 Respiratory nitrate reductase 1 alpha chain × 2 （P09152） MOLYBDENUM ATOM × 2 IRON/SULFUR CLUSTER × 8 2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE × 4 FE3-S4 CLUSTER × 2 water × 4 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1q16 1q16 1q16 1q16 1r27 1r27 1r27 1r27 1r27 1siw 1siw 1siw

35 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name NARH_ECOLI
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–512； UniProt 1–512 Author chain D； PDBConstruct 1–512； UniProt 1–512

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_id1r27
Deposition date deposition_date2003-09-26
Structure title titleCrystal Structure of NarGH complex
Keywords keywordsbeta barrel; x-ray crystallography, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-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.

1r27__assembly_1__model_1

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

Download this curve (.dat)

1r27__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1r27__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）34.34 Å
Rg (electron density)33.66 Å
Total Rg34.26 Å
Atom count13505
Residues1683
Excluded volume238820 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1r27__assembly_1__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1r27__assembly_2__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1r27__assembly_3__model_1 hexadecameric （16） Success 4.1.3-1-20251215 (887e7ef) View Download
4 1 1r27__assembly_4__model_1 octameric （8） Success 4.1.3-1-20251215 (887e7ef) View Download
5 1 1r27__assembly_5__model_1 tetrameric （4） 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 (7)

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6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1r27a1
Class classb — All beta proteins
Fold Fold foldb.52 — Double psi beta-barrel
Superfamily Superfamily superfamilyb.52.2 — ADC-like
Family Family familyb.52.2.2 — Formate dehydrogenase/DMSO reductase, C-terminal domain
Domain ID domain_idd1r27a2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.81 — Formate dehydrogenase/DMSO reductase, domains 1-3
Superfamily Superfamily superfamilyc.81.1 — Formate dehydrogenase/DMSO reductase, domains 1-3
Family Family familyc.81.1.1 — Formate dehydrogenase/DMSO reductase, domains 1-3
Domain ID domain_idd1r27b_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.58 — Ferredoxin-like
Superfamily Superfamily superfamilyd.58.1 — 4Fe-4S ferredoxins
Family Family familyd.58.1.5 — Ferredoxin domains from multidomain proteins
Domain ID domain_idd1r27c1
Class classb — All beta proteins
Fold Fold foldb.52 — Double psi beta-barrel
Superfamily Superfamily superfamilyb.52.2 — ADC-like
Family Family familyb.52.2.2 — Formate dehydrogenase/DMSO reductase, C-terminal domain
Domain ID domain_idd1r27c2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.81 — Formate dehydrogenase/DMSO reductase, domains 1-3
Superfamily Superfamily superfamilyc.81.1 — Formate dehydrogenase/DMSO reductase, domains 1-3
Family Family familyc.81.1.1 — Formate dehydrogenase/DMSO reductase, domains 1-3
Domain ID domain_idd1r27d_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.58 — Ferredoxin-like
Superfamily Superfamily superfamilyd.58.1 — 4Fe-4S ferredoxins
Family Family familyd.58.1.5 — Ferredoxin domains from multidomain proteins

CATH v4.4 (8 domains)

Domain ID domain_id1r27A02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily12770 — Nitrate reductase alpha subunit
Domain ID domain_id1r27A04
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology40 — Barwin-like endoglucanases
Homologous superfamily homologous superfamily20 —
Domain ID domain_id1r27B01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily20 —
Domain ID domain_id1r27B03
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3650 — nitrate reductase domain fold
Homologous superfamily homologous superfamily10 — nitrate reductase domain like
Domain ID domain_id1r27C02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily12770 — Nitrate reductase alpha subunit
Domain ID domain_id1r27C04
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology40 — Barwin-like endoglucanases
Homologous superfamily homologous superfamily20 —
Domain ID domain_id1r27D01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily20 —
Domain ID domain_id1r27D03
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3650 — nitrate reductase domain fold
Homologous superfamily homologous superfamily10 — nitrate reductase domain like
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7. Citations (1)