SAXSdb — 1pm3

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

MTH1895

Methanothermobacter thermautotrophicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O27887_METTH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–97； UniProt 1–77 Author chain B； PDBConstruct 21–97； UniProt 1–77

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	1pm3
Deposition date deposition_date	2003-06-09
Structure title title	MTH1859
Keywords keywords	unknown function, Structural Genomics, PSI, Protein Structure Initiative, Northeast Structural Genomics Consortium, NESG; UNKNOWN FUNCTION
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.

1pm3__assembly_1__model_1

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

Download this curve (.dat)

1pm3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1pm3__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.86 Å
Rg (electron density)	15.91 Å
Total Rg	16.95 Å
Atom count	1036
Residues	137
Excluded volume	18909 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1pm3__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 (1)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1pm3a1
Class class	b — All beta proteins
Fold Fold fold	b.41 — PRC-barrel domain
Superfamily Superfamily superfamily	b.41.1 — PRC-barrel domain
Family Family family	b.41.1.2 — MTH1895

Domain ID domain_id	d1pm3a2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d1pm3b1
Class class	b — All beta proteins
Fold Fold fold	b.41 — PRC-barrel domain
Superfamily Superfamily superfamily	b.41.1 — PRC-barrel domain
Family Family family	b.41.1.2 — MTH1895

Domain ID domain_id	d1pm3b2
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id	1pm3A00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	30 — SH3 type barrels.
Homologous superfamily homologous superfamily	240 — PRC-barrel domain

Domain ID domain_id	1pm3B00
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	30 — SH3 type barrels.
Homologous superfamily homologous superfamily	240 — PRC-barrel domain

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Unit-cell length a length_a	154.700 Å
Unit-cell length b length_b	154.700 Å
Unit-cell length c length_c	68.900 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	P 61 2 2
Space-group number int_tables_number	178
Crystal system crystal_system	—

Resolution resolution	3.150 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.2580
R_work r_work	0.2550
R_free r_free	0.2930

Description description	MTH1895
Molecular weight formula_weight	10423.0 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1036

MTH1859

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

MTH1895

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

1pm3__assembly_1__model_1

1pm3__assembly_1__model_1 | I(q)

1pm3__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Methanothermobacter thermautotrophicus
NCBI taxonomy ID ncbi_taxonomy_id	145262
Host organism host_organism	Escherichia coli

MTH1859

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

MTH1895

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

1pm3__assembly_1__model_1

1pm3__assembly_1__model_1 | I(q)

1pm3__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)