SAXSdb — 2pn0

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

Prokaryotic transcription elongation factor GreA/GreB

Nitrosomonas europaea

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q82T10_NITEU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–139； UniProt 1–137 Author chain B； PDBConstruct 3–139； UniProt 1–137 Author chain C； PDBConstruct 3–139； UniProt 1–137 Author chain D； PDBConstruct 3–139； UniProt 1–137

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	2pn0
Deposition date deposition_date	2007-04-23
Structure title title	Prokaryotic transcription elongation factor GreA/GreB from Nitrosomonas europaea
Keywords keywords	;Transcription elongation factor, GreA/GreB, structural genomics, APC6349, PSI-2, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG, 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.

2pn0__assembly_2__model_1

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

Download this curve (.dat)

2pn0__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2pn0__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	19.36 Å
Rg (electron density)	18.05 Å
Total Rg	19.08 Å
Atom count	1890
Residues	240
Excluded volume	33944 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2pn0__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2pn0__assembly_2__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 (2)

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	2pn0A01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2pn0A02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily	30 — Transcription elongation factor, GreA/GreB, C-terminal domain

Domain ID domain_id	2pn0B01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2pn0B02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily	30 — Transcription elongation factor, GreA/GreB, C-terminal domain

Domain ID domain_id	2pn0C01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2pn0C02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily	30 — Transcription elongation factor, GreA/GreB, C-terminal domain

Domain ID domain_id	2pn0D01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	286 — GTP Cyclohydrolase I; Chain A, domain 1
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	2pn0D02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily	30 — Transcription elongation factor, GreA/GreB, C-terminal domain

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Unit-cell length a length_a	76.628 Å
Unit-cell length b length_b	80.838 Å
Unit-cell length c length_c	171.387 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	32

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	1.700 Å
Low-resolution limit resolution_low	39.900 Å
R factor r_factor	0.1781
R_work r_work	0.1766
R_free r_free	0.2055

Description description	Prokaryotic transcription elongation factor GreA/GreB
Molecular weight formula_weight	15678.2 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	4554

Prokaryotic transcription elongation factor GreA/GreB from Nitrosomonas europaea

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

Prokaryotic transcription elongation factor GreA/GreB

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

2pn0__assembly_2__model_1

2pn0__assembly_2__model_1 | I(q)

2pn0__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 (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	Nitrosomonas europaea
NCBI taxonomy ID ncbi_taxonomy_id	915
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	567

Prokaryotic transcription elongation factor GreA/GreB from Nitrosomonas europaea

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

Prokaryotic transcription elongation factor GreA/GreB

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

2pn0__assembly_2__model_1

2pn0__assembly_2__model_1 | I(q)

2pn0__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 (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)