3d31

ModBC from Methanosarcina acetivorans

Method: X-RAY DIFFRACTION

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

Sulfate/molybdate ABC transporter, ATP-binding protein

Methanosarcina acetivorans

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Sulfate/molybdate ABC transporter, permease protein × 2 （Q8TTZ4） TUNGSTATE(VI)ION × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Sulfate/molybdate ABC transporter, permease protein × 1 （Q8TTZ4） TUNGSTATE(VI)ION × 1	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	Sulfate/molybdate ABC transporter, permease protein × 1 （Q8TTZ4） TUNGSTATE(VI)ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8TTZ3_METAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–348； UniProt 1–348 Author chain B； PDBConstruct 1–348； UniProt 1–348

Sulfate/molybdate ABC transporter, permease protein

Methanosarcina acetivorans

UniProt Q8TTZ4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Sulfate/molybdate ABC transporter, ATP-binding protein × 2 （Q8TTZ3） TUNGSTATE(VI)ION × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Sulfate/molybdate ABC transporter, ATP-binding protein × 1 （Q8TTZ3） TUNGSTATE(VI)ION × 1	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 2	Sulfate/molybdate ABC transporter, ATP-binding protein × 1 （Q8TTZ3） TUNGSTATE(VI)ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8TTZ4_METAC
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 24–295； UniProt 1–272 Author chain D； PDBConstruct 24–295； UniProt 1–272

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	3d31
Deposition date deposition_date	2008-05-09
Structure title title	ModBC from Methanosarcina acetivorans
Keywords keywords	ATP-binding, Nucleotide-binding, Transport, Membrane, Transmembrane, TRANSPORT PROTEIN; TRANSPORT PROTEIN
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.

3d31__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3d31__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3d31__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	35.83 Å
Rg (electron density)	36.01 Å
Total Rg	36.35 Å
Atom count	4660
Residues	596
Excluded volume	84756 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3d31__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3d31__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3d31__assembly_3__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 (3)

Entity 1 Entity 1 polymer

Description description	Sulfate/molybdate ABC transporter, ATP-binding protein
Molecular weight formula_weight	38907.1 kDa
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	9320

MIEIESLSRKWKNFSLDNLSLKVESGEYFVILGPTGAGKTLFLELIAGFHVPDSGRILLDGKDVTDLSPEKHDIAFVYQNYSLFPHMNVKKNLEFGMRMKKIKDPKRVLDTARDLKIEHLLDRNPLTLSGGEQQRVALARALVTNPKILLLDEPLSALDPRTQENAREMLSVLHKKNKLTVLHITHDQTEARIMADRIAVVMDGKLIQVGKPEEIFEKPVEGRVASFVGFENVLKGRVISAEQGLLRIRVGEVVIDAAGDMEVGDQVYAFLRPENIALSKSSTQSSIRNSLQGRVTEAWVLGALVRVKVDCGVPLNVLITRRSAEEMELSPGVQIYARFKASSVHVLR

Source Source

Source organism organism	Methanosarcina acetivorans
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Sulfate/molybdate ABC transporter, permease protein
Molecular weight formula_weight	32841.6 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

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

MGHHHHHHHHHHSSGENLYFQGHMKAKNRKTRKFEPLTFVFSFLLLVLFLFIFLTLSNMIFEQITEDFSGLVKAAGNRSVISSIFLSLYAGFLATLLALLLGAPTGYILARFDFPGKRLVESIIDVPVVVPHTVAGIALLTVFGSRGLIGEPLESYIQFRDALPGIVVAMLFVSMPYLANSAREGFKSVDPRLENAARSLGAPLWKAFFFVTLPLSARYLLIGSVMTWARAISEFGAVVILAYYPMVGPTLIYDRFISYGLSASRPIAVLLILVTLSIFLVIRTLSAGWSIYDRD

Source Source

Source organism organism	Methanosarcina acetivorans
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	TUNGSTATE(VI)ION
Molecular weight formula_weight	247.8 kDa
Source method src_method	syn
Copy count entity_count	2

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6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d3d31a1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.6 — MOP-like
Family Family family	b.40.6.3 — ABC-transporter additional domain

Domain ID domain_id	d3d31a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.12 — ABC transporter ATPase domain-like

Domain ID domain_id	d3d31b1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.6 — MOP-like
Family Family family	b.40.6.0 — automated matches

Domain ID domain_id	d3d31b2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.12 — ABC transporter ATPase domain-like

Domain ID domain_id	d3d31c1
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.58 — MetI-like
Superfamily Superfamily superfamily	f.58.1 — MetI-like
Family Family family	f.58.1.1 — MetI-like

Domain ID domain_id	d3d31d1
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.58 — MetI-like
Superfamily Superfamily superfamily	f.58.1 — MetI-like
Family Family family	f.58.1.1 — MetI-like

CATH v4.4 (8 domains)

Domain ID domain_id	3d31A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	3d31A02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	3d31A03
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	100 — RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain

Domain ID domain_id	3d31B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	3d31B02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	3d31B03
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	100 — RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain

Domain ID domain_id	3d31C00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3720 — MetI-like fold
Homologous superfamily homologous superfamily	10 — MetI-like

Domain ID domain_id	3d31D00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	3720 — MetI-like fold
Homologous superfamily homologous superfamily	10 — MetI-like

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Unit-cell length a length_a	92.840 Å
Unit-cell length b length_b	139.460 Å
Unit-cell length c length_c	207.330 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	3.000 Å
Low-resolution limit resolution_low	30.000 Å
R factor r_factor	—
R_work r_work	0.2510
R_free r_free	0.2820

ModBC from Methanosarcina acetivorans

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

Sulfate/molybdate ABC transporter, ATP-binding protein

State in the Current Structure

Other States of the Same Protein in the Database

Sulfate/molybdate ABC transporter, permease protein

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

3d31__assembly_2__model_1

3d31__assembly_2__model_1 | I(q)

3d31__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

CATH v4.4 (8 domains)

7. Citations (1)

ModBC from Methanosarcina acetivorans

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

Sulfate/molybdate ABC transporter, ATP-binding protein

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Sulfate/molybdate ABC transporter, permease protein

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

3d31__assembly_2__model_1

3d31__assembly_2__model_1 | I(q)

3d31__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (6 domains)

CATH v4.4 (8 domains)

7. Citations (1)