SAXSdb — 9vll

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

DUF5610 domain-containing protein

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	QatC × 1 （A0A4Q0WMG2） ZINC ION × 1 PHOSPHATE ION × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A6N2XJ30_CITAM
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–274； UniProt 1–274

QatC

Escherichia coli

UniProt A0A4Q0WMG2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	DUF5610 domain-containing protein × 1 （A0A6N2XJ30） ZINC ION × 1 PHOSPHATE ION × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A4Q0WMG2_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–457； UniProt 1–457

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	9vll
Deposition date deposition_date	2025-06-25
Last revision last_revision	2026-06-03
Structure title title	Crystal structure of QatB-QatC complex
Keywords keywords	QatB, QatC, QatABCD, UNKNOWN FUNCTION; 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.

9vll__assembly_1__model_1

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

Download this curve (.dat)

9vll__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9vll__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.30 Å
Rg (electron density)	26.10 Å
Total Rg	26.87 Å
Atom count	5459
Residues	714
Excluded volume	96248 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9vll__assembly_1__model_1`	dimeric （2）	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)

Entity 1 Entity 1 polymer

Description description	DUF5610 domain-containing protein
Molecular weight formula_weight	29954.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	5501

MGTSKAYGGPVHGLIPDFVENPSPPTLPPVDPADDSTLDTPLIPPDSSGSGPLSTPKANFTRYSRSGSRSSLGKAVAGYVRNGVGGAGRASRRMGASRAAAGGLLGLISDYQQGGATQALERFNLGNLAGQSASTALLSLVEFLCPPGGSVDEGVARQAMLETIADMSDVGEENFDELTPDQLKEVFIGFVVHSIEGRLMADIGKNGIKLPDDIDAIVSIQEDLHDFVDGATRTQLREELRNLTGLSGDAIDRKVEEIYTVAFELLAREGERLELEHHHHHH

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 polymer

Description description	QatC
Molecular weight formula_weight	51692.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MSHHTLVARLGTDDNSDLQLSRQSTHLTEINFLKENGKLDFGLGQALNGLSDLGLTPMDVSVDLALLAATVTAADTRISRGHNAQDLWTREIALYIPVASPTLWNSQTGLLSRMLNFLTGDRWTIHFRSRPVIEHGLIQRSSKERSVNPTSVCLFSGGLDSFIGAIDLLSNGGTPLLISHYWDTTTSVYQQKCAQLLSERYGQSFSHVRARVGFEKTTIEGEDGENTLRGRSFMFFSLATMAADALGGPVTINVPENGLISLNVPLDPLRVGALSTRTTHPFYMARFNELLGNLGISAHLENPYAYKTKGEMAIHCHDHAFLRQHAADTMSCSSPQSTRWNPALNEQQSTHCGRCVPCLIRRASLFTAFGTDDTIYRIPDLRSRVLDSSKPEGEHVRAFQFALARLARSPSRAKFDIHKPGPLSDYPDCLAEYEGVYLRGMKEVERLLSGVITRPLTLEHHHHHH

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	42

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Unit-cell length a length_a	115.410 Å
Unit-cell length b length_b	119.590 Å
Unit-cell length c length_c	120.170 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	8

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

Resolution resolution	2.580 Å
Low-resolution limit resolution_low	29.898 Å
R factor r_factor	0.2030
R_work r_work	0.1969
R_free r_free	0.2779

Crystal structure of QatB-QatC complex

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

DUF5610 domain-containing protein

State in the Current Structure

Other States of the Same Protein in the Database

QatC

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

9vll__assembly_1__model_1

9vll__assembly_1__model_1 | I(q)

9vll__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)

Crystal structure of QatB-QatC complex

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

DUF5610 domain-containing protein

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

QatC

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

9vll__assembly_1__model_1

9vll__assembly_1__model_1 | I(q)

9vll__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)