SAXSdb — 9q6w

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

Twitching motility protein PilT

Vibrio cholerae O1 biovar El Tor str. N16961

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	SULFATE ION × 110 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KUQ2_VIBCH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 20–386； UniProt 2–368 Author chain B； PDBConstruct 20–386； UniProt 2–368 Author chain C； PDBConstruct 20–386； UniProt 2–368

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_id	9q6w
Deposition date deposition_date	2025-08-22
Structure title title	Crystal Structure of Vibrio cholerae PilU, a PilT-dependent Retraction ATPase - Crystal Form 2
Keywords keywords	;Structural Genomics, Center for Structural Biology of Infectious Diseases, CSBID, PilU, PilT-dependent Retraction ATPase, MOTOR PROTEIN ;; MOTOR PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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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.

9q6w__assembly_1__model_1

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

Download this curve (.dat)

9q6w__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9q6w__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	41.57 Å
Rg (electron density)	40.73 Å
Total Rg	41.15 Å
Atom count	17040
Residues	2110
Excluded volume	298710 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9q6w__assembly_1__model_1`	hexameric （6）	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 (3)

Entity 1 Entity 1 polymer

Description description	Twitching motility protein PilT
Molecular weight formula_weight	42949.9 kDa
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	8648

MAGGSGGHHHHHHAGGAGGELNQYLDGMLTHKASDLYITVGAPILYRVDGELRAQGEALSVADVTALLHAMMDDARQAEFKQTREANFAVVRDSGRFRVSAFFQRELPGAVIRRIETRIPTFEELKLPEVLQNLAIAKRGLVLVVGATGSGKSTTMAAMTGYRNQHRTGHILTVEDPIEFVHEHKRCIVTQREVGLDTESYEVALKNSLRQAPDMILIGEIRSRETMEYAMTFAETGHLCMATLHANNANQALERILHLVPKEQREQFLLDLSLNLKGVIAQQLLRDKNGKGRHGVFEVLLNSPRIADLIRRGELHELKATMARSQEVGMQTFDQALYQLVVDDKISEQDALHSADSANDLRLMLKTKRGDDYGSGSLQNVKIDME

Source Source

Source organism organism	Vibrio cholerae O1 biovar El Tor str. N16961
NCBI taxonomy ID ncbi_taxonomy_id	243277
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	55

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	128

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Unit-cell length a length_a	102.835 Å
Unit-cell length b length_b	120.826 Å
Unit-cell length c length_c	175.559 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	29.580 Å
R factor r_factor	0.2251
R_work r_work	0.2227
R_free r_free	0.2702

Crystal Structure of Vibrio cholerae PilU, a PilT-dependent Retraction ATPase - Crystal Form 2

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

Twitching motility protein PilT

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

9q6w__assembly_1__model_1

9q6w__assembly_1__model_1 | I(q)

9q6w__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

7. Citations (1)

Crystal Structure of Vibrio cholerae PilU, a PilT-dependent Retraction ATPase - Crystal Form 2

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

Twitching motility protein PilT

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

9q6w__assembly_1__model_1

9q6w__assembly_1__model_1 | I(q)

9q6w__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

7. Citations (1)