SAXSdb — 3fuv

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

Dimethyladenosine transferase

Thermus thermophilus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
3	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	KSGA_THET8
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–271； UniProt 1–271 Author chain B； PDBConstruct 1–271； UniProt 1–271 Author chain C； PDBConstruct 1–271； UniProt 1–271

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	3fuv
Deposition date deposition_date	2009-01-14
Structure title title	Apo-form of T. thermophilus 16S rRNA A1518 and A1519 methyltransferase (KsgA) in space group P43212
Keywords keywords	;Methyltransferase, dimethyltransferase, dual-specific methyltransferase, 16S rRNA methyltransferase, translation, Antibiotic resistance, RNA-binding, rRNA processing, S-adenosyl-L-methionine, Transferase ;; TRANSFERASE
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.

3fuv__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3fuv__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3fuv__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	22.00 Å
Rg (electron density)	21.03 Å
Total Rg	21.96 Å
Atom count	1971
Residues	252
Excluded volume	35547 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3fuv__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3fuv__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3fuv__assembly_3__model_1`	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 (2)

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6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d3fuva_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.66 — S-adenosyl-L-methionine-dependent methyltransferases
Superfamily Superfamily superfamily	c.66.1 — S-adenosyl-L-methionine-dependent methyltransferases
Family Family family	c.66.1.0 — automated matches

Domain ID domain_id	d3fuvb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.66 — S-adenosyl-L-methionine-dependent methyltransferases
Superfamily Superfamily superfamily	c.66.1 — S-adenosyl-L-methionine-dependent methyltransferases
Family Family family	c.66.1.0 — automated matches

Domain ID domain_id	d3fuvc_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.66 — S-adenosyl-L-methionine-dependent methyltransferases
Superfamily Superfamily superfamily	c.66.1 — S-adenosyl-L-methionine-dependent methyltransferases
Family Family family	c.66.1.0 — automated matches

CATH v4.4 (6 domains)

Domain ID domain_id	3fuvA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	150 — Vaccinia Virus protein VP39

Domain ID domain_id	3fuvA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	100 — rRNA adenine dimethylase, C-terminal domain

Domain ID domain_id	3fuvB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	150 — Vaccinia Virus protein VP39

Domain ID domain_id	3fuvB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	100 — rRNA adenine dimethylase, C-terminal domain

Domain ID domain_id	3fuvC01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	150 — Vaccinia Virus protein VP39

Domain ID domain_id	3fuvC02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	100 — rRNA adenine dimethylase, C-terminal domain

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Unit-cell length a length_a	85.111 Å
Unit-cell length b length_b	85.111 Å
Unit-cell length c length_c	215.867 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	24

Space group space_group	P 43 21 2
Space-group number int_tables_number	96
Crystal system crystal_system	—

Resolution resolution	1.950 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.2330
R_work r_work	0.2290
R_free r_free	0.3090

Description description	Dimethyladenosine transferase
Molecular weight formula_weight	29909.0 kDa
EC 编号 ec_number	2.1.1.-
Source method src_method	man
Copy count entity_count	3

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	6657

Apo-form of T. thermophilus 16S rRNA A1518 and A1519 methyltransferase (KsgA) in space group P43212

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

Dimethyladenosine transferase

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

3fuv__assembly_3__model_1

3fuv__assembly_3__model_1 | I(q)

3fuv__assembly_3__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) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Source organism organism	Thermus thermophilus
NCBI taxonomy ID ncbi_taxonomy_id	300852
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	568

Apo-form of T. thermophilus 16S rRNA A1518 and A1519 methyltransferase (KsgA) in space group P43212

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

Dimethyladenosine transferase

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

3fuv__assembly_3__model_1

3fuv__assembly_3__model_1 | I(q)

3fuv__assembly_3__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) 9 domains

SCOP 2.08 (3 domains)

CATH v4.4 (6 domains)

7. Citations (1)