SAXSdb — 4uhv

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

VGRG1, VALINE-GLYCINE REPEAT PROTEIN G1

PSEUDOMONAS AERUGINOSA

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	CHLORIDE ION × 75 SODIUM ION × 21 water × 3	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 3	CHLORIDE ION × 39 SODIUM ION × 18 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9I741_PSEAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–643； UniProt 1–643 Author chain B； PDBConstruct 1–643； UniProt 1–643

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	4uhv
Deposition date deposition_date	2015-03-25
Structure title title	The structure of VgrG1, the needle tip of the bacterial Type VI Secretion System
Keywords keywords	STRUCTURAL PROTEIN, VGRG1, VIRULENCE, TOXIN, EFFECTOR, PUNCTURING DEVICE, SPIKE, T6SS, P. AERUGINOSA; STRUCTURAL 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.

4uhv__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

4uhv__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4uhv__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	48.21 Å
Rg (electron density)	49.04 Å
Total Rg	49.13 Å
Atom count	15327
Residues	1905
Excluded volume	269340 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4uhv__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4uhv__assembly_2__model_1`	trimeric （3）	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 (4)

Entity 1 Entity 1 polymer

Description description	VGRG1, VALINE-GLYCINE REPEAT PROTEIN G1
Molecular weight formula_weight	73591.6 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	10911

MQLTRLVQVDCPLGPDVLLLQRMEGREELGRLFAYELHLVSENPNLPLEQLLGKPMSLSLELPGGSRRFFHGIVARCSQVAGHGQFAGYQATLRPWPWLLTRTSDCRIFQNQSVPEIIKQVFRNLGFSDFEDALTRPYREWEYCVQYRETSFDFISRLMEQEGIYYWFRHEQKRHILVLSDAYGAHRSPGGYASVPYYPPTLGHRERDHFFDWQMAREVQPGSLTLNDYDFQRPGARLEVRSNIARPHAAADYPLYDYPGEYVQSQDGEQYARNRIEAIQAQHERVRLRGVVRGIGAGHLFRLSGYPRDDQNREYLVVGAEYRVVQELYETGSGGAGSQFESELDCIDASQSFRLLPQTPVPVVRGPQTAVVVGPKGEEIWTDQYGRVKVHFHWDRHDQSNENSSCWIRVSQAWAGKNWGSMQIPRIGQEVIVSFLEGDPDRPIITGRVYNAEQTVPYELPANATQSGMKSRSSKGGTPANFNEIRMEDKKGAEQLYIHAERNQDNLVENDASLSVGHDRNKSIGHDELARIGNNRTRAVKLNDTLLVGGAKSDSVTGTYLIEAGAQIRLVCGKSVVEFNADGTINISGSAFNLYASGNGNIDTGGRLDLNSGGASEVDAKGKGVQGTIDGQVQAMFPPPAKGLEHHHHHH

Source Source

Source organism organism	PSEUDOMONAS AERUGINOSA
NCBI taxonomy ID ncbi_taxonomy_id	208964
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	38

Entity 3 Entity 3 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	13

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	644

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	4uhvA01
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	4uhvA02
Class class	3 — Alpha Beta
Architecture architecture	55 — 3-Layer(bab) Sandwich
Topology topology	50 — Phage tail protein beta-alpha-beta fold
Homologous superfamily homologous superfamily	10 — Baseplate protein-like domains

Domain ID domain_id	4uhvA03
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	220 — Light-harvesting Protein
Homologous superfamily homologous superfamily	110 —

Domain ID domain_id	4uhvA04
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	230 — Gp5 N-terminal domain

Domain ID domain_id	4uhvB01
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	110 — Pnp Oxidase; Chain A
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	4uhvB02
Class class	3 — Alpha Beta
Architecture architecture	55 — 3-Layer(bab) Sandwich
Topology topology	50 — Phage tail protein beta-alpha-beta fold
Homologous superfamily homologous superfamily	10 — Baseplate protein-like domains

Domain ID domain_id	4uhvB03
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	220 — Light-harvesting Protein
Homologous superfamily homologous superfamily	110 —

Domain ID domain_id	4uhvB04
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	230 — Gp5 N-terminal domain

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Unit-cell length a length_a	78.620 Å
Unit-cell length b length_b	78.620 Å
Unit-cell length c length_c	430.320 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 63
Space-group number int_tables_number	173
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	71.730 Å
R factor r_factor	0.2246
R_work r_work	0.2233
R_free r_free	0.2485

The structure of VgrG1, the needle tip of the bacterial Type VI Secretion System

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

VGRG1, VALINE-GLYCINE REPEAT PROTEIN G1

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

4uhv__assembly_2__model_1

4uhv__assembly_2__model_1 | I(q)

4uhv__assembly_2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)

The structure of VgrG1, the needle tip of the bacterial Type VI Secretion System

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

VGRG1, VALINE-GLYCINE REPEAT PROTEIN G1

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

4uhv__assembly_2__model_1

4uhv__assembly_2__model_1 | I(q)

4uhv__assembly_2__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)