SAXSdb — 9uai

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

Nitrate transport ATP-binding subunits C and D

Pseudanabaena sp. Chao 1811

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A2Z5WYP5_9CYAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain E； PDBConstruct 15–400； UniProt 274–659

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	9uai
Deposition date deposition_date	2025-04-01
Last revision last_revision	2026-04-08
Structure title title	Crystal structure of cyanobacterial CRD of CmpBCD in the presence of nitrate
Keywords keywords	ABC transporter, bicarbonate importer, membrane transporter, nitrate binding, TRANSPORT PROTEIN; TRANSPORT 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.

9uai__assembly_1__model_1

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

Download this curve (.dat)

9uai__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9uai__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.28 Å
Rg (electron density)	29.56 Å
Total Rg	30.11 Å
Atom count	5838
Residues	746
Excluded volume	103400 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9uai__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 (3)

Entity 1 Entity 1 polymer

Description description	Nitrate transport ATP-binding subunits C and D
Molecular weight formula_weight	44472.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E
Atom count atom_count	3187

MGSSHHHHHHSSGKHGLEKVNLEIGFVPLTACAPIAVAKEKGFFEKHGLDEVSLVRETSWRGIVDGISGGYLDAAQMPSGLPMWLTLGGAGACKPIVTALTMTRNGNAITLDKHFYDRGIHTLADFKAMLQSTRDRQHRMGVVHPSSMHNLLLRYWLAAGGIDPDLDVELKTIPPAQMVVDLKAGSIDGFCVGEPWNFRAAMENIGFTVATDLEIWNGHPGKVLGVREDWANAYPNTHIALVKALLEACMYCADPNNAEEIRQILSRRAYVSTNVNYIHLGNPDDVTCALDTPMREPAHHQFYGAGVNRPSRSEHLWHITQMARWGDVPFPRNWVEVLEKTCRVGVFSTAARELGLTDITYSRNAIQLFDDIPFNAEDPIGYLNHLDIKRNITMAEIAME

Source Source

Source organism organism	Pseudanabaena sp. Chao 1811
NCBI taxonomy ID ncbi_taxonomy_id	2963092
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	NITRATE ION
Molecular weight formula_weight	62.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	268

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Unit-cell length a length_a	92.271 Å
Unit-cell length b length_b	49.958 Å
Unit-cell length c length_c	97.585 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	116.70 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.750 Å
Low-resolution limit resolution_low	13.070 Å
R factor r_factor	0.1985
R_work r_work	0.1969
R_free r_free	0.2294

Crystal structure of cyanobacterial CRD of CmpBCD in the presence of nitrate

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

Nitrate transport ATP-binding subunits C and D

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

9uai__assembly_1__model_1

9uai__assembly_1__model_1 | I(q)

9uai__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 cyanobacterial CRD of CmpBCD in the presence of nitrate

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

Nitrate transport ATP-binding subunits C and D

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

9uai__assembly_1__model_1

9uai__assembly_1__model_1 | I(q)

9uai__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)