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3chx

Crystal structure of Methylosinus trichosporium OB3b particulate methane monooxygenase (pMMO)

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

PmoB

Methylosinus trichosporium

UniProt Q9KX50

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 PmoA × 3 （Q50541） PmoC × 3 （Q9KX51） 20-residue peptide × 3 26-residue peptide × 3 COPPER (II) ION × 9 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3chx

1 assemblies

View Construct and Data Evidence
UniProt name Q9KX50_METTR
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–392； UniProt 40–431 Author chain E； PDBConstruct 1–392； UniProt 40–431 Author chain I； PDBConstruct 1–392； UniProt 40–431

PmoA

Methylosinus trichosporium

UniProt Q50541

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 PmoB × 3 （Q9KX50） PmoC × 3 （Q9KX51） 20-residue peptide × 3 26-residue peptide × 3 COPPER (II) ION × 9 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3chx

1 assemblies

View Construct and Data Evidence
UniProt name Q50541_METTR
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–252； UniProt 1–252 Author chain F； PDBConstruct 1–252； UniProt 1–252 Author chain J； PDBConstruct 1–252； UniProt 1–252

PmoC

Methylosinus trichosporium

UniProt Q9KX51

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 PmoB × 3 （Q9KX50） PmoA × 3 （Q50541） 20-residue peptide × 3 26-residue peptide × 3 COPPER (II) ION × 9 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
3chx

1 assemblies

View Construct and Data Evidence
UniProt name Q9KX51_METTR
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C； PDBConstruct 1–256； UniProt 1–256 Author chain G； PDBConstruct 1–256； UniProt 1–256 Author chain K； PDBConstruct 1–256； UniProt 1–256

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_id3chx
Deposition date deposition_date2008-03-10
Structure title titleCrystal structure of Methylosinus trichosporium OB3b particulate methane monooxygenase (pMMO)
Keywords keywordsMEMBRANE PROTEIN, METHANE, BETA BARREL; MEMBRANE PROTEIN
Experimental Method methodX-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.

3chx__assembly_1__model_1

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

Download this curve (.dat)

3chx__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

3chx__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）41.13 Å
Rg (electron density)40.22 Å
Total Rg40.81 Å
Atom count18945
Residues2415
Excluded volume340680 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3chx__assembly_1__model_1 pentadecameric （15） 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)

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6. Fold Classification (SCOP + CATH) 15 domains

CATH v4.4 (15 domains)

Domain ID domain_id3chxA01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily570 — Particulate methane monooxygenase, b subunit. Chain: A, domain 1
Domain ID domain_id3chxA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily710 — Helix hairpin bin
Domain ID domain_id3chxA03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily1580 — Particulate methane monooxygenase, b subunit. Chain: A, domain 3
Domain ID domain_id3chxB00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1450 — particulate methane monooxygenase, chain B
Homologous superfamily homologous superfamily10 — Ammonia/particulate methane monooxygenase, subunit A
Domain ID domain_id3chxC00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily50 — Particulate methane monooxygenase subunit c2. Chain: C
Domain ID domain_id3chxE01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily570 — Particulate methane monooxygenase, b subunit. Chain: A, domain 1
Domain ID domain_id3chxE02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily710 — Helix hairpin bin
Domain ID domain_id3chxE03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily1580 — Particulate methane monooxygenase, b subunit. Chain: A, domain 3
Domain ID domain_id3chxF00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1450 — particulate methane monooxygenase, chain B
Homologous superfamily homologous superfamily10 — Ammonia/particulate methane monooxygenase, subunit A
Domain ID domain_id3chxG00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily50 — Particulate methane monooxygenase subunit c2. Chain: C
Domain ID domain_id3chxI01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily570 — Particulate methane monooxygenase, b subunit. Chain: A, domain 1
Domain ID domain_id3chxI02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily710 — Helix hairpin bin
Domain ID domain_id3chxI03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily1580 — Particulate methane monooxygenase, b subunit. Chain: A, domain 3
Domain ID domain_id3chxJ00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1450 — particulate methane monooxygenase, chain B
Homologous superfamily homologous superfamily10 — Ammonia/particulate methane monooxygenase, subunit A
Domain ID domain_id3chxK00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1050 — Glutathione S-transferase Yfyf (Class Pi); Chain A, domain 2
Homologous superfamily homologous superfamily50 — Particulate methane monooxygenase subunit c2. Chain: C
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7. Citations (1)