7nir

1918 H1N1 Viral influenza polymerase heterotrimer with Nb8191 core

Method: ELECTRON MICROSCOPY Dmax: 140.7 Å Quality: REASONABLE

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

Polymerase acidic protein

Influenza A virus (strain A/Brevig Mission/1/1918 H1N1)

UniProt Q3HM39

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Insufficient information Heteromer Protein × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain A; UniProt 1–716 Not recorded RNA-directed RNA polymerase catalytic subunit × 1 (Q3HM40) Polymerase basic protein 2,Immunoglobulin G-binding protein A × 1 (Q3HM41,P38507) ;RNA (5'-R(P*GP*GP*CP*CP*UP*GP*CP*U)-3') ; × 1 ;RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*CP*C)-3') ; × 1 Nanobody8191 core × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 6.70 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.

24 other PDB entries and 24 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PA_I18A0
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–716; UniProt 1–716

RNA-directed RNA polymerase catalytic subunit

Influenza A virus (strain A/Brevig Mission/1/1918 H1N1)

UniProt Q3HM40

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Insufficient information Heteromer Protein × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain B; UniProt 1–757 Not recorded Polymerase acidic protein × 1 (Q3HM39) Polymerase basic protein 2,Immunoglobulin G-binding protein A × 1 (Q3HM41,P38507) ;RNA (5'-R(P*GP*GP*CP*CP*UP*GP*CP*U)-3') ; × 1 ;RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*CP*C)-3') ; × 1 Nanobody8191 core × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 6.70 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.

24 other PDB entries and 24 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RDRP_I18A0
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–757; UniProt 1–757

Polymerase basic protein 2,Immunoglobulin G-binding protein A

Staphylococcus aureus

UniProt P38507

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Insufficient information Heteromer Protein × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain C; UniProt 158–271 Not recorded Polymerase acidic protein × 1 (Q3HM39) RNA-directed RNA polymerase catalytic subunit × 1 (Q3HM40) ;RNA (5'-R(P*GP*GP*CP*CP*UP*GP*CP*U)-3') ; × 1 ;RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*CP*C)-3') ; × 1 Nanobody8191 core × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 6.70 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.

66 other PDB entries and 127 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SPA_STAAU
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 784–897; UniProt 158–271

Polymerase basic protein 2,Immunoglobulin G-binding protein A

Staphylococcus aureus

UniProt Q3HM41

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Insufficient information Heteromer Protein × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain C; UniProt 1–759 Not recorded Polymerase acidic protein × 1 (Q3HM39) RNA-directed RNA polymerase catalytic subunit × 1 (Q3HM40) ;RNA (5'-R(P*GP*GP*CP*CP*UP*GP*CP*U)-3') ; × 1 ;RNA (5'-R(P*AP*GP*UP*AP*GP*AP*AP*AP*CP*AP*AP*GP*GP*CP*C)-3') ; × 1 Nanobody8191 core × 1 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 6.70 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.

24 other PDB entries and 24 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PB2_I18A0
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–759; UniProt 1–759

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 7nir

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id7nir
Deposition date deposition_date2021-02-13
Structure title title1918 H1N1 Viral influenza polymerase heterotrimer with Nb8191 core
Keywords keywordsInfluenza, RNA polymerase, H1N1, 1918, VIRAL PROTEIN, nanobody; VIRAL PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier39.38
Radius of gyration Rg (electron density) rg_electron39.18
Forward intensity I(0) i0732297000.00
Molecular weight molecular_weight213310.0 kDa
Excluded volume excluded_volume263820 ų
Envelope volume envelope_volume343020 ų
Hydration-shell volume shell_volume71463 ų
Envelope diameter envelope_diameter150.3
Shell Rg shell_rg45.74
Envelope Rg envelope_rg39.25
Shape Rg shape_rg39.21
Total Rg total_rg39.43
Total atoms total_atoms28796
Residues n_residues1819
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 dmax140.7
Rg (real space) rg_real39.39
Rg uncertainty (real space) rg_real_error1.36
I(0) (real space) i0_real7.3230e+08
I(0) uncertainty (real space) i0_real_error1.2870e+07
Rg (reciprocal space) rg_reciprocal39.39
I(0) (reciprocal space) i0_reciprocal732300000.0000
Solution quality estimate total_estimate0.6107
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary49.2
Skewness Skewness skewness0.474
Kurtosis Kurtosis kurtosis0.202
Angular range angular_range— – 0.2000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha162900000.0000
Real-space data points n_real_points41
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.662; Stabil: 1.000; Sysdev: 0.013; Positv: 1.000; Valcen: 0.995; Smooth: 0.913

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)