7cxn

Architecture of a SARS-CoV-2 mini replication and transcription complex

Method: ELECTRON MICROSCOPY Dmax: 167.9 Å Quality: GOOD

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

RNA-directed RNA polymerase

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTD1

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–RNA Homooligomer Protein × 6 RNA 3 PDB declaration: nonameric(9) Consistent with all polymer counts Chain A; UniProt 4393–5324 Chain B; UniProt 3943–4140 Chain C; UniProt 3860–3942 Chain D; UniProt 3943–4140 Chain E; UniProt 5325–5925 Chain F; UniProt 5325–5925 Fragment:UNP residues 4393-5324 Mutation:D910N Fragment:UNP residues 3943-4140 Fragment:UNP residues 3860-3942 Fragment:UNP residues 5325-5925 Primer RNA × 1 Template RNA × 1 ;RNA (5'-R(P*UP*UP*UP*UP*UP*U)-3') ; × 1 ZN ZINC ION × 8 ELECTRON MICROSCOPY cryo-EM buffer:pH 7 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.84 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

3350 other PDB entries and 4324 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name R1AB_SARS2
Isoform
PDB entities 1, 2, 3, 7
Chains and sequence ranges Author chain A; PDBConstruct 1–932; UniProt 4393–5324 Author chain B; PDBConstruct 1–198; UniProt 3943–4140 Author chain D; PDBConstruct 1–198; UniProt 3943–4140 Author chain C; PDBConstruct 1–83; UniProt 3860–3942 Author chain E; PDBConstruct 1–601; UniProt 5325–5925 Author chain F; PDBConstruct 1–601; UniProt 5325–5925

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.

SAXS scattering curve SAXS Profile

SAXS profile for 7cxn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7cxn
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7cxn
Deposition date deposition_date2020-09-02
Structure title titleArchitecture of a SARS-CoV-2 mini replication and transcription complex
Keywords keywordsSARS-CoV-2, RTC, VIRAL PROTEIN-RNA complex; VIRAL PROTEIN/RNA
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier51.28
Radius of gyration Rg (electron density) rg_electron51.17
Forward intensity I(0) i01467010000.00
Molecular weight molecular_weight304840.0 kDa
Excluded volume excluded_volume375310 ų
Envelope volume envelope_volume560520 ų
Hydration-shell volume shell_volume92594 ų
Envelope diameter envelope_diameter177.2
Shell Rg shell_rg54.88
Envelope Rg envelope_rg49.23
Shape Rg shape_rg51.21
Total Rg total_rg51.14
Total atoms total_atoms21295
Residues n_residues2620
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax167.9
Rg (real space) rg_real51.13
Rg uncertainty (real space) rg_real_error1.85
I(0) (real space) i0_real1.4670e+09
I(0) uncertainty (real space) i0_real_error2.9790e+07
Rg (reciprocal space) rg_reciprocal51.39
I(0) (reciprocal space) i0_reciprocal1468000000.0000
Solution quality estimate total_estimate0.8922
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary65.0
Skewness Skewness skewness0.145
Kurtosis Kurtosis kurtosis-0.485
Angular range angular_range— – 0.1550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha101600000.0000
Real-space data points n_real_points32
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.902; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.892

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

7. Fold Classification (SCOP + CATH) 5 domains

CATH v4.4 (5 domains)

Domain ID domain_id7cxnB01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily3540 — Nsp8 replicase, head domain
Domain ID domain_id7cxnD01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily3540 — Nsp8 replicase, head domain
Domain ID domain_id7cxnE01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id7cxnF01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases
Domain ID domain_id7cxnF02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily300 — P-loop containing nucleotide triphosphate hydrolases

8. Citations (1)

9. Files and Curves (10)