SAXSdb — 4wxh

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

Carminomycin 4-O-methyltransferase DnrK

Streptomyces peucetius

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	S-ADENOSYL-L-HOMOCYSTEINE × 2 ;methyl (1R,2R,4S)-2-ethyl-2,5,7-trihydroxy-6,11-dioxo-4-{[2,3,6-trideoxy-3-(dimethylamino)-alpha-L-lyxo-hexopyranosyl]oxy}-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate ; × 2 (2R,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL × 1 SULFATE ION × 5 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DNRK_STRPE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 12–367； UniProt 2–356 Author chain B； PDBConstruct 12–367； UniProt 2–356

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	4wxh
Deposition date deposition_date	2014-11-13
Structure title title	Carminomycin-4-O-methyltransferase (DnrK) variant (298Ser insert) in complex with S-adenosyl-L-homocysteine (SAH) and aclacinomycin T
Keywords keywords	methyltransferase, mono-oxygenase, SAH binding, antibiotic binding, 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.

4wxh__assembly_1__model_1

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

Download this curve (.dat)

4wxh__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4wxh__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	29.50 Å
Rg (electron density)	28.86 Å
Total Rg	29.38 Å
Atom count	5451
Residues	684
Excluded volume	96623 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4wxh__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 (6)

Entity 1 Entity 1 polymer

Description description	Carminomycin 4-O-methyltransferase DnrK
Molecular weight formula_weight	40198.5 kDa
EC 编号 ec_number	2.1.1.292
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	5855

MAHHHHHHHRSTAEPTVAARPQQIDALRTLIRLGSLHTPMVVRTAATLRLVDHILAGARTVKALAARTDTRPEALLRLIRHLVAIGLLEEDAPGEFVPTEVGELLADDHPAAQRAWHDLTQAVARADISFTRLPDAIRTGRPTYESIYGKPFYEDLAGRPDLRASFDSLLACDQDVAFDAPAAAYDWTNVRHVLDVGGGKGGFAAAIARRAPHVSATVLEMAGTVDTARSYLKDEGLSDRVDVVEGDFFEPLPRKADAIILSFVLLNWPDHDAVRILTRCAEALEPGGRILIHERDDLHENSFNEQFSTELDLRMLVFLGGALRTREKWDGLAASAGLVVEEVRQLPSPTIPYDLSLLVLAPAATGA

Source Source

Source organism organism	Streptomyces peucetius
NCBI taxonomy ID ncbi_taxonomy_id	1950
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	S-ADENOSYL-L-HOMOCYSTEINE
Molecular weight formula_weight	384.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	;methyl (1R,2R,4S)-2-ethyl-2,5,7-trihydroxy-6,11-dioxo-4-{[2,3,6-trideoxy-3-(dimethylamino)-alpha-L-lyxo-hexopyranosyl]oxy}-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate ;
Molecular weight formula_weight	569.6 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	(2R,3S)-1,4-DIMERCAPTOBUTANE-2,3-DIOL
Molecular weight formula_weight	154.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	343

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d4wxha1
Class class	a — All alpha proteins
Fold Fold fold	a.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamily	a.4.5 — 'Winged helix' DNA-binding domain
Family Family family	a.4.5.29 — Plant O-methyltransferase, N-terminal domain

Domain ID domain_id	d4wxha2
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.66.1.12 — Plant O-methyltransferase, C-terminal domain

Domain ID domain_id	d4wxhb1
Class class	a — All alpha proteins
Fold Fold fold	a.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamily	a.4.5 — 'Winged helix' DNA-binding domain
Family Family family	a.4.5.29 — Plant O-methyltransferase, N-terminal domain

Domain ID domain_id	d4wxhb2
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.66.1.12 — Plant O-methyltransferase, C-terminal domain

CATH v4.4 (6 domains)

Domain ID domain_id	4wxhA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain

Domain ID domain_id	4wxhA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	1350 —

Domain ID domain_id	4wxhA03
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	4wxhB01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain

Domain ID domain_id	4wxhB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	1350 —

Domain ID domain_id	4wxhB03
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

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Unit-cell length a length_a	60.803 Å
Unit-cell length b length_b	100.995 Å
Unit-cell length c length_c	62.398 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	102.47 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	52.168 Å
R factor r_factor	0.1952
R_work r_work	0.1932
R_free r_free	0.2335

Carminomycin-4-O-methyltransferase (DnrK) variant (298Ser insert) in complex with S-adenosyl-L-homocysteine (SAH) and aclacinomycin T

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

Carminomycin 4-O-methyltransferase DnrK

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

4wxh__assembly_1__model_1

4wxh__assembly_1__model_1 | I(q)

4wxh__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Carminomycin-4-O-methyltransferase (DnrK) variant (298Ser insert) in complex with S-adenosyl-L-homocysteine (SAH) and aclacinomycin T

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

Carminomycin 4-O-methyltransferase DnrK

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

4wxh__assembly_1__model_1

4wxh__assembly_1__model_1 | I(q)

4wxh__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (1)