SAXSdb — 1t57

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

Conserved Protein MTH1675

Methanothermobacter thermautotrophicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	MAGNESIUM ION × 8 FLAVIN MONONUCLEOTIDE × 6 water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O27711_METTH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–206； UniProt 1–186 Author chain B； PDBConstruct 21–206； UniProt 1–186 Author chain C； PDBConstruct 21–206； UniProt 1–186

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	1t57
Deposition date deposition_date	2004-05-03
Structure title title	Crystal Structure of the Conserved Protein MTH1675 from Methanobacterium thermoautotrophicum
Keywords keywords	;Structural Genomics, FMN, Methanobacterium thermoautotrophicum, PSI, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG, UNKNOWN FUNCTION ;; STRUCTURAL GENOMICS, 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.

1t57__assembly_1__model_1

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

Download this curve (.dat)

1t57__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1t57__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	32.82 Å
Rg (electron density)	31.85 Å
Total Rg	32.39 Å
Atom count	8630
Residues	1074
Excluded volume	153610 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1t57__assembly_1__model_1`	hexameric （6）	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 (4)

Entity 1 Entity 1 polymer

Description description	Conserved Protein MTH1675
Molecular weight formula_weight	22640.5 kDa
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	4441

MGSSHHHHHHSSGLVPRGSHMEKKICYFEEPGKENTERVLELVGERADQLGIRNFVVASVSGETALRLSEMVEGNIVSVTHHAGFREKGQLELEDEARDALLERGVNVYAGSHALSGVGRGISNRFGGVTPVEIMAETLRMVSQGFKVCVEIAIMAADAGLIPVDEEVIAIGGTAWGADTALVLTPAHMNSVFDLRIHEVIAMPRP

Source Source

Source organism organism	Methanothermobacter thermautotrophicus
NCBI taxonomy ID ncbi_taxonomy_id	145262
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	FLAVIN MONONUCLEOTIDE
Molecular weight formula_weight	456.3 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	126

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1t57a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.49 — Pyruvate kinase C-terminal domain-like
Superfamily Superfamily superfamily	c.49.1 — PK C-terminal domain-like
Family Family family	c.49.1.2 — MTH1675-like

Domain ID domain_id	d1t57b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.49 — Pyruvate kinase C-terminal domain-like
Superfamily Superfamily superfamily	c.49.1 — PK C-terminal domain-like
Family Family family	c.49.1.2 — MTH1675-like

Domain ID domain_id	d1t57c_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.49 — Pyruvate kinase C-terminal domain-like
Superfamily Superfamily superfamily	c.49.1 — PK C-terminal domain-like
Family Family family	c.49.1.2 — MTH1675-like

CATH v4.4 (3 domains)

Domain ID domain_id	1t57A00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1380 — Pyruvate Kinase; Chain: A, domain 1
Homologous superfamily homologous superfamily	20 — Pyruvate kinase, C-terminal domain

Domain ID domain_id	1t57B00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1380 — Pyruvate Kinase; Chain: A, domain 1
Homologous superfamily homologous superfamily	20 — Pyruvate kinase, C-terminal domain

Domain ID domain_id	1t57C00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	1380 — Pyruvate Kinase; Chain: A, domain 1
Homologous superfamily homologous superfamily	20 — Pyruvate kinase, C-terminal domain

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Unit-cell length a length_a	103.983 Å
Unit-cell length b length_b	69.398 Å
Unit-cell length c length_c	90.953 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	12

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	32.920 Å
R factor r_factor	0.2590
R_work r_work	0.2520
R_free r_free	0.3180

Crystal Structure of the Conserved Protein MTH1675 from Methanobacterium thermoautotrophicum

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

Conserved Protein MTH1675

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

1t57__assembly_1__model_1

1t57__assembly_1__model_1 | I(q)

1t57__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Crystal Structure of the Conserved Protein MTH1675 from Methanobacterium thermoautotrophicum

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

Conserved Protein MTH1675

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

1t57__assembly_1__model_1

1t57__assembly_1__model_1 | I(q)

1t57__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)