1qni
Crystal Structure of Nitrous Oxide Reductase from Pseudomonas nautica, at 2.4A Resolution
1. Protein Identity and Related Structures Protein Identity & Related Structures
No usable UniProt protein identity is available for this entry.
The relationship tables retain this entry's assembly and composition data, but cross-PDB links for the same protein cannot be established reliably without a unified protein identity.
Assembly Composition of the Current Entry
| Assembly | Physical composition | Protein state | 蛋白 / DNA / RNA / 其他Polymer | Data consistency |
|---|---|---|---|---|
| 1 | Protein homooligomer | Homooligomer | 2 / 0 / 0 / 0 | Consistent with protein count |
| 2 | Protein homooligomer | Homooligomer | 2 / 0 / 0 / 0 | Consistent with protein count |
| 3 | Protein homooligomer | Homooligomer | 2 / 0 / 0 / 0 | Consistent with protein count |
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.
2. Structure Basics 2. Structure Basics
| Entry ID entry_id | 1qni |
| Deposition date deposition_date | 1999-10-15 |
| Structure title title | Crystal Structure of Nitrous Oxide Reductase from Pseudomonas nautica, at 2.4A Resolution |
| Keywords keywords | OXIDOREDUCTASE, DENITRIFICATION, MAD, ELECTRON TRANSFER; OXIDOREDUCTASE |
| Experimental Method method | X-RAY DIFFRACTION |
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.
1qni__assembly_1__model_1
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
1qni__assembly_1__model_1 | I(q)
1qni__assembly_1__model_1 | P(r) · Pending
| Rg（Guinier） | 31.08 Å |
| Rg (electron density) | 30.45 Å |
| Total Rg | 30.97 Å |
| Atom count | 9046 |
| Residues | 1144 |
| Excluded volume | 159880 ų |
| Maximum q | 0.500 Å⁻¹ |
| Assembly | Model | Structure unit | Oligomeric description | Status | CRYSOL | Actions |
|---|---|---|---|---|---|---|
| 1 | 1 | 1qni__assembly_1__model_1 |
dimeric （2） | Success | 4.1.3-1-20251215 (887e7ef) | View Download |
| 2 | 1 | 1qni__assembly_2__model_1 |
dimeric （2） | Success | 4.1.3-1-20251215 (887e7ef) | View Download |
| 3 | 1 | 1qni__assembly_3__model_1 |
dimeric （2） | Success | 4.1.3-1-20251215 (887e7ef) | View Download |
4. Crystallography and Experiment 4. Crystallography & Experiment
5. Entities and Polymers Entities & Polymers (6)
6. Fold Classification (SCOP + CATH) 24 domains
SCOP 2.08 (12 domains)
| Domain ID domain_id | d1qnia1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnia2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
| Domain ID domain_id | d1qnib1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnib2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
| Domain ID domain_id | d1qnic1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnic2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
| Domain ID domain_id | d1qnid1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnid2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
| Domain ID domain_id | d1qnie1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnie2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
| Domain ID domain_id | d1qnif1 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.6 — Cupredoxin-like |
| Superfamily Superfamily superfamily | b.6.1 — Cupredoxins |
| Family Family family | b.6.1.4 — Nitrosocyanin |
| Domain ID domain_id | d1qnif2 |
| Class class | b — All beta proteins |
| Fold Fold fold | b.69 — 7-bladed beta-propeller |
| Superfamily Superfamily superfamily | b.69.3 — Nitrous oxide reductase, N-terminal domain |
| Family Family family | b.69.3.1 — Nitrous oxide reductase, N-terminal domain |
CATH v4.4 (12 domains)
| Domain ID domain_id | 1qniA01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniA02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |
| Domain ID domain_id | 1qniB01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniB02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |
| Domain ID domain_id | 1qniC01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniC02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |
| Domain ID domain_id | 1qniD01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniD02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |
| Domain ID domain_id | 1qniE01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniE02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |
| Domain ID domain_id | 1qniF01 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 130 — 7 Propeller |
| Topology topology | 10 — Methylamine Dehydrogenase; Chain H |
| Homologous superfamily homologous superfamily | 10 — YVTN repeat-like/Quinoprotein amine dehydrogenase |
| Domain ID domain_id | 1qniF02 |
| Class class | 2 — Mainly Beta |
| Architecture architecture | 60 — Sandwich |
| Topology topology | 40 — Immunoglobulin-like |
| Homologous superfamily homologous superfamily | 420 — Cupredoxins - blue copper proteins |