1ftr

FORMYLMETHANOFURAN:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE FROM METHANOPYRUS KANDLERI

Method: X-RAY DIFFRACTION

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

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE

Methanopyrus kandleri

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FTR_METKA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–296； UniProt 1–296 Author chain B； PDBConstruct 1–296； UniProt 1–296 Author chain C； PDBConstruct 1–296； UniProt 1–296 Author chain D； PDBConstruct 1–296； UniProt 1–296

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	1ftr
Deposition date deposition_date	1997-09-21
Structure title title	FORMYLMETHANOFURAN:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE FROM METHANOPYRUS KANDLERI
Keywords keywords	FORMYLTRANSFERASE, METHANOGENESIS, ARCHAE, ACYLTRANSFERASE, HYPERTHERMOPHILIC, HALOPHILIC; FORMYLTRANSFERASE
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.

1ftr__assembly_1__model_1

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

Download this curve (.dat)

1ftr__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ftr__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.76 Å
Rg (electron density)	29.45 Å
Total Rg	30.13 Å
Atom count	8884
Residues	1184
Excluded volume	157270 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ftr__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 (2)

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1ftra1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftra2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrc1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrd1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

Domain ID domain_id	d1ftrd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.58 — Ferredoxin-like
Superfamily Superfamily superfamily	d.58.33 — Formylmethanofuran:tetrahydromethanopterin formyltransferase
Family Family family	d.58.33.1 — Formylmethanofuran:tetrahydromethanopterin formyltransferase

CATH v4.4 (8 domains)

Domain ID domain_id	1ftrA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

Domain ID domain_id	1ftrD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	520 —

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Unit-cell length a length_a	157.500 Å
Unit-cell length b length_b	157.500 Å
Unit-cell length c length_c	242.100 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	64

Space group space_group	I 41 2 2
Space-group number int_tables_number	98
Crystal system crystal_system	—

Resolution resolution	1.700 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.1980
R_work r_work	0.1980
R_free r_free	0.2480

Description description	FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE
Molecular weight formula_weight	31686.4 kDa
EC 编号 ec_number	2.3.1.101
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	9590

FORMYLMETHANOFURAN:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE FROM METHANOPYRUS KANDLERI

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

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE

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

1ftr__assembly_1__model_1

1ftr__assembly_1__model_1 | I(q)

1ftr__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	Methanopyrus kandleri
NCBI taxonomy ID ncbi_taxonomy_id	2320
Host organism host_organism	Escherichia coli BL21(DE3)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	706

FORMYLMETHANOFURAN:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE FROM METHANOPYRUS KANDLERI

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

FORMYLMETHANOFURAN\:TETRAHYDROMETHANOPTERIN FORMYLTRANSFERASE

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

1ftr__assembly_1__model_1

1ftr__assembly_1__model_1 | I(q)

1ftr__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (1)