8xp0

Cryo-EM structure of the protomers of the C ring in the CCW state

Method: ELECTRON MICROSCOPY Dmax: 211.1 Å Quality: GOOD

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

Flagellar motor switch protein FliG

OrganismNot specified

UniProt P0A1J9

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 heterocomplex Heteromer Protein × 18 PDB declaration: octadecameric(18) Consistent with protein copy count Chain M; UniProt 1–331 Chain S; UniProt 1–331 Chain Y; UniProt 1–331 Not recorded Flagellar M-ring protein × 3 (P15928) Flagellar motor switch protein FliM × 3 (P26418) Flagellar motor switch protein FliN × 9 (P26419) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;Blot time: 2 Blot force: -5 Wait time: 5 Blot total: 1 Drain time: 2 Resolution 4.00 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.

14 other PDB entries and 14 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FLIG_SALTY
Isoform
PDB entities 1
Chains and sequence ranges Author chain M; PDBConstruct 1–331; UniProt 1–331 Author chain S; PDBConstruct 1–331; UniProt 1–331 Author chain Y; PDBConstruct 1–331; UniProt 1–331

Flagellar M-ring protein

OrganismNot specified

UniProt P15928

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 heterocomplex Heteromer Protein × 18 PDB declaration: octadecameric(18) Consistent with protein copy count Chain N; UniProt 1–560 Chain T; UniProt 1–560 Chain Z; UniProt 1–560 Not recorded Flagellar motor switch protein FliG × 3 (P0A1J9) Flagellar motor switch protein FliM × 3 (P26418) Flagellar motor switch protein FliN × 9 (P26419) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;Blot time: 2 Blot force: -5 Wait time: 5 Blot total: 1 Drain time: 2 Resolution 4.00 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.

47 other PDB entries and 47 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FLIF_SALTY
Isoform
PDB entities 2
Chains and sequence ranges Author chain N; PDBConstruct 1–560; UniProt 1–560 Author chain T; PDBConstruct 1–560; UniProt 1–560 Author chain Z; PDBConstruct 1–560; UniProt 1–560

Flagellar motor switch protein FliM

OrganismNot specified

UniProt P26418

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 heterocomplex Heteromer Protein × 18 PDB declaration: octadecameric(18) Consistent with protein copy count Chain O; UniProt 1–334 Chain U; UniProt 1–334 Chain a; UniProt 1–334 Not recorded Flagellar motor switch protein FliG × 3 (P0A1J9) Flagellar M-ring protein × 3 (P15928) Flagellar motor switch protein FliN × 9 (P26419) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;Blot time: 2 Blot force: -5 Wait time: 5 Blot total: 1 Drain time: 2 Resolution 4.00 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.

13 other PDB entries and 13 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FLIM_SALTY
Isoform
PDB entities 3
Chains and sequence ranges Author chain O; PDBConstruct 1–334; UniProt 1–334 Author chain U; PDBConstruct 1–334; UniProt 1–334 Author chain a; PDBConstruct 1–334; UniProt 1–334

Flagellar motor switch protein FliN

OrganismNot specified

UniProt P26419

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 heterocomplex Heteromer Protein × 18 PDB declaration: octadecameric(18) Consistent with protein copy count Chain P; UniProt 1–137 Chain Q; UniProt 1–137 Chain R; UniProt 1–137 Chain V; UniProt 1–137 Chain W; UniProt 1–137 Chain X; UniProt 1–137 Chain b; UniProt 1–137 Chain c; UniProt 1–137 Chain d; UniProt 1–137 Not recorded Flagellar motor switch protein FliG × 3 (P0A1J9) Flagellar M-ring protein × 3 (P15928) Flagellar motor switch protein FliM × 3 (P26418) ELECTRON MICROSCOPY cryo-EM buffer:pH 8 cryo-EM vitrification conditions:Cryogen ETHANE;Blot time: 2 Blot force: -5 Wait time: 5 Blot total: 1 Drain time: 2 Resolution 4.00 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.

16 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name FLIN_SALTY
Isoform
PDB entities 4
Chains and sequence ranges Author chain P; PDBConstruct 1–137; UniProt 1–137 Author chain Q; PDBConstruct 1–137; UniProt 1–137 Author chain R; PDBConstruct 1–137; UniProt 1–137 Author chain V; PDBConstruct 1–137; UniProt 1–137 Author chain W; PDBConstruct 1–137; UniProt 1–137 Author chain X; PDBConstruct 1–137; UniProt 1–137 Author chain b; PDBConstruct 1–137; UniProt 1–137 Author chain c; PDBConstruct 1–137; UniProt 1–137 Author chain d; PDBConstruct 1–137; UniProt 1–137

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 8xp0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8xp0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8xp0
Deposition date deposition_date2024-01-02
Structure title titleCryo-EM structure of the protomers of the C ring in the CCW state
Keywords keywordsC ring, flagellum, flagellar motor, motor, switch complex, rotation, FliF, FliG, FliM, FliN, MOTOR PROTEIN; MOTOR PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier61.25
Radius of gyration Rg (electron density) rg_electron61.50
Forward intensity I(0) i01264400000.00
Molecular weight molecular_weight301290.0 kDa
Excluded volume excluded_volume379620 ų
Envelope volume envelope_volume641910 ų
Hydration-shell volume shell_volume89510 ų
Envelope diameter envelope_diameter239.6
Shell Rg shell_rg59.71
Envelope Rg envelope_rg60.54
Shape Rg shape_rg61.44
Total Rg total_rg61.67
Total atoms total_atoms21156
Residues n_residues2676
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 dmax211.1
Rg (real space) rg_real61.60
Rg uncertainty (real space) rg_real_error2.16
I(0) (real space) i0_real1.2640e+09
I(0) uncertainty (real space) i0_real_error2.7080e+07
Rg (reciprocal space) rg_reciprocal60.90
I(0) (reciprocal space) i0_reciprocal1263000000.0000
Solution quality estimate total_estimate0.8583
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary56.8
Skewness Skewness skewness0.449
Kurtosis Kurtosis kurtosis-0.275
Angular range angular_range— – 0.1300 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha135800000.0000
Real-space data points n_real_points27
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.841; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.630

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)