SAXSdb — 3g7g

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

UPF0311 protein CA_C3321

Clostridium acetobutylicum ATCC 824

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Y3321_CLOAB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–158； UniProt 1–158 Author chain B； PDBConstruct 1–158； UniProt 1–158 Author chain C； PDBConstruct 1–158； UniProt 1–158 Author chain D； PDBConstruct 1–158； UniProt 1–158 Author chain E； PDBConstruct 1–158； UniProt 1–158 Author chain F； PDBConstruct 1–158； UniProt 1–158 Author chain G； PDBConstruct 1–158； UniProt 1–158 Author chain H； PDBConstruct 1–158； UniProt 1–158

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	3g7g
Deposition date deposition_date	2009-02-09
Structure title title	Crystal structure of the protein with unknown function from Clostridium acetobutylicum ATCC 824
Keywords keywords	;Protein with unknown fuction, Structural genomics, PSI, MCSG, Protein Structure Initiative, Midwest Center for Structural Genomics, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, UNKNOWN FUNCTION
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.

3g7g__assembly_1__model_1

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

Download this curve (.dat)

3g7g__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3g7g__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.77 Å
Rg (electron density)	23.50 Å
Total Rg	24.42 Å
Atom count	4595
Residues	576
Excluded volume	82527 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3g7g__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3g7g__assembly_2__model_1`	tetrameric （4）	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 (2)

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	3g7gA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gB00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gC00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gD00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gE00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gF00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gG00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3g7gH00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	160 — Porin
Homologous superfamily homologous superfamily	20 —

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Unit-cell length a length_a	67.048 Å
Unit-cell length b length_b	166.841 Å
Unit-cell length c length_c	66.974 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	119.06 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.990 Å
Low-resolution limit resolution_low	58.620 Å
R factor r_factor	0.1965
R_work r_work	0.1934
R_free r_free	0.2537

Description description	UPF0311 protein CA_C3321
Molecular weight formula_weight	17941.6 kDa
Source method src_method	man
Copy count entity_count	8

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,D,E,C,F,G,H
Atom count atom_count	9804

Crystal structure of the protein with unknown function from Clostridium acetobutylicum ATCC 824

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

UPF0311 protein CA_C3321

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

3g7g__assembly_1__model_1

3g7g__assembly_1__model_1 | I(q)

3g7g__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	Clostridium acetobutylicum ATCC 824
NCBI taxonomy ID ncbi_taxonomy_id	272562
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	506

Crystal structure of the protein with unknown function from Clostridium acetobutylicum ATCC 824

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

UPF0311 protein CA_C3321

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

3g7g__assembly_1__model_1

3g7g__assembly_1__model_1 | I(q)

3g7g__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)