SAXSdb — 1eik

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

RNA POLYMERASE SUBUNIT RPB5

Methanothermobacter thermautotrophicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPOH_METTH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–77； UniProt 1–77

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	1eik
Deposition date deposition_date	2000-02-25
Structure title title	Solution Structure of RNA Polymerase Subunit RPB5 from Methanobacterium Thermoautotrophicum
Keywords keywords	;rpb5, rpbH, rna polymerase subunit, OCSP, NESG, PROTEIN STRUCTURE INITIATIVE, Structural Genomics, PSI, Northeast Structural Genomics Consortium, TRANSFERASE ;; TRANSFERASE
Experimental Method method	SOLUTION NMR

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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.

1eik__assembly_1__model_1

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

Download this curve (.dat)

1eik__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1eik__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.39 Å
Rg (electron density)	14.11 Å
Total Rg	15.50 Å
Atom count	1288
Residues	77
Excluded volume	11235 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1eik__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1eik__assembly_1__model_2`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1eik__assembly_1__model_3`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1eik__assembly_1__model_4`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1eik__assembly_1__model_5`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1eik__assembly_1__model_6`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1eik__assembly_1__model_7`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1eik__assembly_1__model_8`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`1eik__assembly_1__model_9`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`1eik__assembly_1__model_10`	monomeric （1）	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 (1)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1eika_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.78 — RPB5-like RNA polymerase subunit
Superfamily Superfamily superfamily	d.78.1 — RPB5-like RNA polymerase subunit
Family Family family	d.78.1.1 — RPB5

CATH v4.4 (1 domains)

Domain ID domain_id	1eikA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	940 — Eukaryotic RPB6 RNA polymerase subunit
Homologous superfamily homologous superfamily	20 — RPB5-like RNA polymerase subunit

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

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

Description description	RNA POLYMERASE SUBUNIT RPB5
Molecular weight formula_weight	8826.4 kDa
EC 编号 ec_number	2.7.7.6
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	12880

Source organism organism	Methanothermobacter thermautotrophicus
NCBI taxonomy ID ncbi_taxonomy_id	145262
Host organism host_organism	Escherichia coli

Solution Structure of RNA Polymerase Subunit RPB5 from Methanobacterium Thermoautotrophicum

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

RNA POLYMERASE SUBUNIT RPB5

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

1eik__assembly_1__model_1

1eik__assembly_1__model_1 | I(q)

1eik__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Solution Structure of RNA Polymerase Subunit RPB5 from Methanobacterium Thermoautotrophicum

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

RNA POLYMERASE SUBUNIT RPB5

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

1eik__assembly_1__model_1

1eik__assembly_1__model_1 | I(q)

1eik__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)