SAXSdb — 1eyv

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

N-UTILIZING SUBSTANCE PROTEIN B HOMOLOG

Mycobacterium tuberculosis

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NUSB_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–156； UniProt 1–156 Author chain B； PDBConstruct 1–156； UniProt 1–156

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	1eyv
Deposition date deposition_date	2000-05-09
Structure title title	THE CRYSTAL STRUCTURE OF NUSB FROM MYCOBACTERIUM TUBERCULOSIS
Keywords keywords	helical bundle, Structural Genomics, PSI, Protein Structure Initiative, TB Structural Genomics Consortium, TBSGC, TRANSCRIPTION; TRANSCRIPTION
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.

1eyv__assembly_1__model_1

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

Download this curve (.dat)

1eyv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1eyv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	19.52 Å
Rg (electron density)	18.31 Å
Total Rg	19.19 Å
Atom count	2018
Residues	264
Excluded volume	35677 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1eyv__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	N-UTILIZING SUBSTANCE PROTEIN B HOMOLOG
Molecular weight formula_weight	16765.2 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	2309

MSDRKPVRGRHQARKRAVALLFEAEVRGISAAEVVDTRAALAEAKPDIARLHPYTAAVARGVSEHAAHIDDLITAHLRGWTLDRLPAVDRAILRVSVWELLHAADVPEPVVVDEAVQLAKELSTDDSPGFVNGVLGQVMLVTPQLRAAAQAVRGGA

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	1773
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	291

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1eyva_
Class class	a — All alpha proteins
Fold Fold fold	a.79 — NusB-like
Superfamily Superfamily superfamily	a.79.1 — NusB-like
Family Family family	a.79.1.1 — Antitermination factor NusB

Domain ID domain_id	d1eyvb_
Class class	a — All alpha proteins
Fold Fold fold	a.79 — NusB-like
Superfamily Superfamily superfamily	a.79.1 — NusB-like
Family Family family	a.79.1.1 — Antitermination factor NusB

CATH v4.4 (2 domains)

Domain ID domain_id	1eyvA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	940 — N-utilizing Substance Protein B Homolog; Chain A
Homologous superfamily homologous superfamily	10 — NusB-like

Domain ID domain_id	1eyvB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	940 — N-utilizing Substance Protein B Homolog; Chain A
Homologous superfamily homologous superfamily	10 — NusB-like

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Unit-cell length a length_a	46.330 Å
Unit-cell length b length_b	63.540 Å
Unit-cell length c length_c	90.030 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	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.600 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	—
R_work r_work	0.1900
R_free r_free	0.2340

THE CRYSTAL STRUCTURE OF NUSB FROM MYCOBACTERIUM TUBERCULOSIS

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

N-UTILIZING SUBSTANCE PROTEIN B HOMOLOG

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

1eyv__assembly_1__model_1

1eyv__assembly_1__model_1 | I(q)

1eyv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

THE CRYSTAL STRUCTURE OF NUSB FROM MYCOBACTERIUM TUBERCULOSIS

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

N-UTILIZING SUBSTANCE PROTEIN B HOMOLOG

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

1eyv__assembly_1__model_1

1eyv__assembly_1__model_1 | I(q)

1eyv__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)