SAXSdb — 3mdd

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

MEDIUM CHAIN ACYL-COA DEHYDROGENASE

Sus scrofa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	FLAVIN-ADENINE DINUCLEOTIDE × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACADM_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–385； UniProt 36–420 Author chain B； PDBConstruct 1–385； UniProt 36–420

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	3mdd
Deposition date deposition_date	1994-07-13
Structure title title	CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE
Keywords keywords	OXIDOREDUCTASE; OXIDOREDUCTASE
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.

3mdd__assembly_1__model_1

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

Download this curve (.dat)

3mdd__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3mdd__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.16 Å
Rg (electron density)	34.53 Å
Total Rg	35.00 Å
Atom count	12140
Residues	1540
Excluded volume	215760 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3mdd__assembly_1__model_1`	tetrameric （4）	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 (3)

Entity 1 Entity 1 polymer

Description description	MEDIUM CHAIN ACYL-COA DEHYDROGENASE
Molecular weight formula_weight	42419.3 kDa
EC 编号 ec_number	1.3.99.3
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	6236

GFSFELTEQQKEFQATARKFAREEIIPVAAEYDRTGEYPVPLLKRAWELGLMNTHIPESFGGLGLGIIDSCLITEELAYGCTGVQTAIEANTLGQVPLIIGGNYQQQKKYLGRMTEEPLMCAYCVTEPGAGSDVAGIKTKAEKKGDEYIINGQKMWITNGGKANWYFLLARSDPDPKAPASKAFTGFIVEADTPGVQIGRKEINMGQRCSDTRGIVFEDVRVPKENVLTGEGAGFKIAMGTFDKTRPPVAAGAVGLAQRALDEATKYALERKTFGKLLAEHQGISFLLADMAMKVELARLSYQRAAWEIDSGRRNTYYASIAKAYAADIANQLATDAVQVFGGNGFNTEYPVEKLMRDAKIYQIYEGTAQIQRIIIAREHIGRYK

Source Source

Source organism organism	Sus scrofa
Common name common_name	pig
NCBI taxonomy ID ncbi_taxonomy_id	9823

Entity 2 Entity 2 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 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	166

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6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d3mdda1
Class class	a — All alpha proteins
Fold Fold fold	a.29 — Bromodomain-like
Superfamily Superfamily superfamily	a.29.3 — Acyl-CoA dehydrogenase C-terminal domain-like
Family Family family	a.29.3.1 — Medium chain acyl-CoA dehydrogenase-like, C-terminal domain

Domain ID domain_id	d3mdda2
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.6 — Acyl-CoA dehydrogenase NM domain-like
Superfamily Superfamily superfamily	e.6.1 — Acyl-CoA dehydrogenase NM domain-like
Family Family family	e.6.1.1 — Medium chain acyl-CoA dehydrogenase, NM (N-terminal and middle) domains

Domain ID domain_id	d3mddb1
Class class	a — All alpha proteins
Fold Fold fold	a.29 — Bromodomain-like
Superfamily Superfamily superfamily	a.29.3 — Acyl-CoA dehydrogenase C-terminal domain-like
Family Family family	a.29.3.1 — Medium chain acyl-CoA dehydrogenase-like, C-terminal domain

Domain ID domain_id	d3mddb2
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.6 — Acyl-CoA dehydrogenase NM domain-like
Superfamily Superfamily superfamily	e.6.1 — Acyl-CoA dehydrogenase NM domain-like
Family Family family	e.6.1.1 — Medium chain acyl-CoA dehydrogenase, NM (N-terminal and middle) domains

CATH v4.4 (6 domains)

Domain ID domain_id	3mddA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	540 — Butyryl-Coa Dehydrogenase, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acyl-CoA dehydrogenase/oxidase, N-terminal domain

Domain ID domain_id	3mddA02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	110 — Butyryl-CoA Dehydrogenase, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Butyryl-CoA Dehydrogenase, subunit A, domain 2

Domain ID domain_id	3mddA03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	140 — Butyryl-CoA Dehydrogenase, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Butyryl-CoA Dehydrogenase, subunit A, domain 3

Domain ID domain_id	3mddB01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	540 — Butyryl-Coa Dehydrogenase, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acyl-CoA dehydrogenase/oxidase, N-terminal domain

Domain ID domain_id	3mddB02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	110 — Butyryl-CoA Dehydrogenase, subunit A; domain 2
Homologous superfamily homologous superfamily	10 — Butyryl-CoA Dehydrogenase, subunit A, domain 2

Domain ID domain_id	3mddB03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	140 — Butyryl-CoA Dehydrogenase, subunit A; domain 3
Homologous superfamily homologous superfamily	10 — Butyryl-CoA Dehydrogenase, subunit A, domain 3

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Unit-cell length a length_a	128.820 Å
Unit-cell length b length_b	136.130 Å
Unit-cell length c length_c	106.140 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	16

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

Resolution resolution	2.400 Å
Low-resolution limit resolution_low	6.000 Å
R factor r_factor	0.1730
R_work r_work	—
R_free r_free	—

CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE

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

MEDIUM CHAIN ACYL-COA DEHYDROGENASE

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

3mdd__assembly_1__model_1

3mdd__assembly_1__model_1 | I(q)

3mdd__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (2)

CRYSTAL STRUCTURES OF MEDIUM CHAIN ACYL-COA DEHYDROGENASE FROM PIG LIVER MITOCHONDRIA WITH AND WITHOUT SUBSTRATE

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

MEDIUM CHAIN ACYL-COA DEHYDROGENASE

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

3mdd__assembly_1__model_1

3mdd__assembly_1__model_1 | I(q)

3mdd__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 10 domains

SCOP 2.08 (4 domains)

CATH v4.4 (6 domains)

7. Citations (2)