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9u4r

Structure of the intial complex in filament assembly at 3.23 angstroms resolution, conformation 2.

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Flagellar hook-associated protein 2

OrganismNot specified

UniProt P16328

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 73 Flagellar hook-associated protein 3 × 13 （P16326） Flagellar hook-associated protein 1 × 11 （P0A1J5） Flagellar hook protein FlgE × 44 （P0A1J1） Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
9m6i

1 assemblies

Heteromeric or nucleic-acid complex
5gna 5krw 6ch2 6ch2 6ch2 9m67 9m68 9m6h 9u4r 9u7y

10 assemblies

View Construct and Data Evidence
UniProt name FLID_SALTY
Isoform —
PDB entities 1, 2
Chains and sequence ranges Author chain AA； PDBConstruct 1–467； UniProt 1–467 Author chain AB； PDBConstruct 1–467； UniProt 1–467 Author chain AD； PDBConstruct 1–467； UniProt 1–467 Author chain AE； PDBConstruct 1–467； UniProt 1–467 Author chain AC； PDBConstruct 1–467； UniProt 1–467

Flagellar hook-associated protein 3

OrganismNot specified

UniProt P16326

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 73 Flagellar hook-associated protein 2 × 4 （P16328） Flagellar hook-associated protein 2 × 1 （P16328） Flagellar hook-associated protein 1 × 11 （P0A1J5） Flagellar hook protein FlgE × 44 （P0A1J1） Consistent with protein count

Other States of the Same Protein in the Database

Monomer
2d4x

1 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
9m68 9u4r 9u7y

3 assemblies

View Construct and Data Evidence
UniProt name FLGL_SALTY
Isoform —
PDB entities 3
Chains and sequence ranges Author chain BA； PDBConstruct 1–317； UniProt 1–317 Author chain BB； PDBConstruct 1–317； UniProt 1–317 Author chain BC； PDBConstruct 1–317； UniProt 1–317 Author chain BD； PDBConstruct 1–317； UniProt 1–317 Author chain BE； PDBConstruct 1–317； UniProt 1–317 Author chain BG； PDBConstruct 1–317； UniProt 1–317 Author chain BH； PDBConstruct 1–317； UniProt 1–317 Author chain BI； PDBConstruct 1–317； UniProt 1–317 Author chain BJ； PDBConstruct 1–317； UniProt 1–317 Author chain BK； PDBConstruct 1–317； UniProt 1–317 Author chain BL； PDBConstruct 1–317； UniProt 1–317 Author chain BM； PDBConstruct 1–317； UniProt 1–317 Author chain BN； PDBConstruct 1–317； UniProt 1–317

Flagellar hook-associated protein 1

OrganismNot specified

UniProt P0A1J5

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 73 Flagellar hook-associated protein 2 × 4 （P16328） Flagellar hook-associated protein 2 × 1 （P16328） Flagellar hook-associated protein 3 × 13 （P16326） Flagellar hook protein FlgE × 44 （P0A1J1） Consistent with protein count

Other States of the Same Protein in the Database

Monomer
2d4y 2d4y

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
9u4r 9u7y

2 assemblies

View Construct and Data Evidence
UniProt name FLGK_SALTY
Isoform —
PDB entities 4
Chains and sequence ranges Author chain CA； PDBConstruct 1–553； UniProt 1–553 Author chain CB； PDBConstruct 1–553； UniProt 1–553 Author chain CC； PDBConstruct 1–553； UniProt 1–553 Author chain CD； PDBConstruct 1–553； UniProt 1–553 Author chain CE； PDBConstruct 1–553； UniProt 1–553 Author chain CF； PDBConstruct 1–553； UniProt 1–553 Author chain CG； PDBConstruct 1–553； UniProt 1–553 Author chain CH； PDBConstruct 1–553； UniProt 1–553 Author chain CI； PDBConstruct 1–553； UniProt 1–553 Author chain CJ； PDBConstruct 1–553； UniProt 1–553 Author chain CK； PDBConstruct 1–553； UniProt 1–553

Flagellar hook protein FlgE

OrganismNot specified

UniProt P0A1J1

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 73 Flagellar hook-associated protein 2 × 4 （P16328） Flagellar hook-associated protein 2 × 1 （P16328） Flagellar hook-associated protein 3 × 13 （P16326） Flagellar hook-associated protein 1 × 11 （P0A1J5） Consistent with protein count

Other States of the Same Protein in the Database

Monomer
3a69 3a69

2 assemblies

Homodimer
1wlg

1 assemblies

Homotetramer

None

Other homooligomers
3a69 6k3i 7cgb 9m7b 9m7q 9m9f

6 assemblies

Heteromeric or nucleic-acid complex
7cbm 7cgo 7e80 7e82 8wki 8wkk 8wl2 8wlp 8wlq 8wlt 8wo5 8woe

14 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name FLGE_SALTY
Isoform —
PDB entities 5
Chains and sequence ranges Author chain DA； PDBConstruct 1–403； UniProt 1–403 Author chain DB； PDBConstruct 1–403； UniProt 1–403 Author chain DC； PDBConstruct 1–403； UniProt 1–403 Author chain DD； PDBConstruct 1–403； UniProt 1–403 Author chain DE； PDBConstruct 1–403； UniProt 1–403 Author chain DF； PDBConstruct 1–403； UniProt 1–403 Author chain DG； PDBConstruct 1–403； UniProt 1–403 Author chain DH； PDBConstruct 1–403； UniProt 1–403 Author chain DI； PDBConstruct 1–403； UniProt 1–403 Author chain DJ； PDBConstruct 1–403； UniProt 1–403 Author chain DK； PDBConstruct 1–403； UniProt 1–403 Author chain EA； PDBConstruct 1–403； UniProt 1–403 Author chain EB； PDBConstruct 1–403； UniProt 1–403 Author chain EC； PDBConstruct 1–403； UniProt 1–403 Author chain ED； PDBConstruct 1–403； UniProt 1–403 Author chain EE； PDBConstruct 1–403； UniProt 1–403 Author chain EF； PDBConstruct 1–403； UniProt 1–403 Author chain EG； PDBConstruct 1–403； UniProt 1–403 Author chain EH； PDBConstruct 1–403； UniProt 1–403 Author chain EI； PDBConstruct 1–403； UniProt 1–403 Author chain EJ； PDBConstruct 1–403； UniProt 1–403 Author chain EK； PDBConstruct 1–403； UniProt 1–403 Author chain FA； PDBConstruct 1–403； UniProt 1–403 Author chain FB； PDBConstruct 1–403； UniProt 1–403 Author chain FC； PDBConstruct 1–403； UniProt 1–403 Author chain FD； PDBConstruct 1–403； UniProt 1–403 Author chain FE； PDBConstruct 1–403； UniProt 1–403 Author chain FF； PDBConstruct 1–403； UniProt 1–403 Author chain FG； PDBConstruct 1–403； UniProt 1–403 Author chain FH； PDBConstruct 1–403； UniProt 1–403 Author chain FI； PDBConstruct 1–403； UniProt 1–403 Author chain FJ； PDBConstruct 1–403； UniProt 1–403 Author chain FK； PDBConstruct 1–403； UniProt 1–403 Author chain GA； PDBConstruct 1–403； UniProt 1–403 Author chain GB； PDBConstruct 1–403； UniProt 1–403 Author chain GC； PDBConstruct 1–403； UniProt 1–403 Author chain GD； PDBConstruct 1–403； UniProt 1–403 Author chain GE； PDBConstruct 1–403； UniProt 1–403 Author chain GF； PDBConstruct 1–403； UniProt 1–403 Author chain GG； PDBConstruct 1–403； UniProt 1–403 Author chain GH； PDBConstruct 1–403； UniProt 1–403 Author chain GI； PDBConstruct 1–403； UniProt 1–403 Author chain GJ； PDBConstruct 1–403； UniProt 1–403 Author chain GK； PDBConstruct 1–403； UniProt 1–403

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_id9u4r
Deposition date deposition_date2025-03-20
Structure title titleStructure of the intial complex in filament assembly at 3.23 angstroms resolution, conformation 2.
Keywords keywordsflagellum, filament assembly, intial complex, fibril, PROTEIN FIBRIL; PROTEIN FIBRIL
Experimental Method methodELECTRON MICROSCOPY
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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.

9u4r__assembly_1__model_1

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

Download this curve (.dat)

9u4r__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 1010 1011 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

9u4r__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）0.00 Å
Rg (electron density)113.10 Å
Total Rg113.30 Å
Atom count219113
Residues29512
Excluded volume3842600 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9u4r__assembly_1__model_1 73-meric （73） 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 (5)

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7. Citations (1)