1efp

ELECTRON TRANSFER FLAVOPROTEIN (ETF) FROM PARACOCCUS DENITRIFICANS

Method: X-RAY DIFFRACTION

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

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

Paracoccus denitrificans

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN) × 1 （P38975） FLAVIN-ADENINE DINUCLEOTIDE × 1 ADENOSINE MONOPHOSPHATE × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN) × 1 （P38975） FLAVIN-ADENINE DINUCLEOTIDE × 1 ADENOSINE MONOPHOSPHATE × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ETFA_PARDE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–307； UniProt 1–307 Author chain C； PDBConstruct 1–307； UniProt 1–307

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

Paracoccus denitrificans

UniProt P38975

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN) × 1 （P38974） FLAVIN-ADENINE DINUCLEOTIDE × 1 ADENOSINE MONOPHOSPHATE × 1 water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN) × 1 （P38974） FLAVIN-ADENINE DINUCLEOTIDE × 1 ADENOSINE MONOPHOSPHATE × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ETFB_PARDE
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–246； UniProt 1–252 Author chain D； PDBConstruct 1–246； UniProt 1–252

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	1efp
Deposition date deposition_date	1998-12-18
Structure title title	ELECTRON TRANSFER FLAVOPROTEIN (ETF) FROM PARACOCCUS DENITRIFICANS
Keywords keywords	ELECTRON TRANSPORT, FLAVOPROTEIN, GLUTARIC ACIDEMIA TYPE II; ELECTRON TRANSPORT
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.

1efp__assembly_1__model_1

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

Download this curve (.dat)

1efp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1efp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.04 Å
Rg (electron density)	23.20 Å
Total Rg	24.10 Å
Atom count	4095
Residues	553
Excluded volume	73283 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1efp__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1efp__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 (5)

Entity 1 Entity 1 polymer

Description description	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)
Molecular weight formula_weight	31192.3 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C
Atom count atom_count	8291

AVLLLGEVTNGALNRDATAKAVAAVKALGDVTVLCAGASAKAAAEEAAKIAGVAKVLVAEDALYGHRLAEPTAALIVGLAGDYSHIAAPATTDAKNVMPRVAALLDVMVLSDVSAILDADTFERPIYAGNAIQVVKSKDAKKVFTIRTASFDAAGEGGTAPVTETAAAADPGLSSWVADEVAESDRPELTSARRVVSGGRGLGSKESFAIIEELADKLGAAVGASRAAVDSGYAPNDWQVGQTGKVVAPELYVAVGISGAIQHLAGMKDSKVIVAINKDEEAPIFQIADYGLVGDLFSVVPELTGKL

Source Source

Source organism organism	Paracoccus denitrificans
NCBI taxonomy ID ncbi_taxonomy_id	266
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)
Molecular weight formula_weight	26707.0 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D

MKVLVPVKRLIDYNVKARVKSDGSGVDLANVKMSMNPFDEIAVEEAIRLKEKGQAEEIIAVSIGVKQAAETLRTALAMGADRAILVVAADDVQQDIEPLAVAKILAAVARAEGTELIIAGKQAIDNDMNATGQMLAAILGWAQATFASKVEIEGAKAKVTREVDGGLQTIAVSLPAVVTADLRLNEPRYASLPNIMKAKKKPLDEKTAADYGVDVAPRLEVVSVREPEGRKAGIKVGSVDELVGKLKEAGVI

Source Source

Source organism organism	Paracoccus denitrificans
NCBI taxonomy ID ncbi_taxonomy_id	266
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	FLAVIN-ADENINE DINUCLEOTIDE
Molecular weight formula_weight	785.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	ADENOSINE MONOPHOSPHATE
Molecular weight formula_weight	347.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	101

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6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d1efpa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.2 — Adenine nucleotide alpha hydrolases-like
Family Family family	c.26.2.3 — ETFP subunits

Domain ID domain_id	d1efpa2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamily	c.31.1 — DHS-like NAD/FAD-binding domain
Family Family family	c.31.1.2 — C-terminal domain of the electron transfer flavoprotein alpha subunit

Domain ID domain_id	d1efpb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.2 — Adenine nucleotide alpha hydrolases-like
Family Family family	c.26.2.3 — ETFP subunits

Domain ID domain_id	d1efpc1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.2 — Adenine nucleotide alpha hydrolases-like
Family Family family	c.26.2.3 — ETFP subunits

Domain ID domain_id	d1efpc2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamily	c.31.1 — DHS-like NAD/FAD-binding domain
Family Family family	c.31.1.2 — C-terminal domain of the electron transfer flavoprotein alpha subunit

Domain ID domain_id	d1efpd_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.26 — Adenine nucleotide alpha hydrolase-like
Superfamily Superfamily superfamily	c.26.2 — Adenine nucleotide alpha hydrolases-like
Family Family family	c.26.2.3 — ETFP subunits

CATH v4.4 (6 domains)

Domain ID domain_id	1efpA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1220 — TPP-binding domain

Domain ID domain_id	1efpA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

Domain ID domain_id	1efpB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

Domain ID domain_id	1efpC01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1220 — TPP-binding domain

Domain ID domain_id	1efpC02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

Domain ID domain_id	1efpD00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	620 — HUPs

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Unit-cell length a length_a	70.430 Å
Unit-cell length b length_b	80.530 Å
Unit-cell length c length_c	183.970 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	2.600 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	0.1930
R_work r_work	0.1930
R_free r_free	0.2860

ELECTRON TRANSFER FLAVOPROTEIN (ETF) FROM PARACOCCUS DENITRIFICANS

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

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

State in the Current Structure

Other States of the Same Protein in the Database

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

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

1efp__assembly_1__model_1

1efp__assembly_1__model_1 | I(q)

1efp__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (3)

ELECTRON TRANSFER FLAVOPROTEIN (ETF) FROM PARACOCCUS DENITRIFICANS

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

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PROTEIN (ELECTRON TRANSFER FLAVOPROTEIN)

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

1efp__assembly_1__model_1

1efp__assembly_1__model_1 | I(q)

1efp__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (3)