SAXSdb — 1g61

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

TRANSLATION INITIATION FACTOR 6

Methanocaldococcus jannaschii

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	IF6_METJA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–228； UniProt 1–228 Author chain B； PDBConstruct 1–228； UniProt 1–228

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	1g61
Deposition date deposition_date	2000-11-02
Structure title title	CRYSTAL STRUCTURE OF M.JANNASCHII EIF6
Keywords keywords	;alpha-beta-barrel velcro closure subdomain, Structural Genomics, PSI, Protein Structure Initiative, New York SGX Research Center for Structural Genomics, NYSGXRC, TRANSLATION ;; TRANSLATION
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.

1g61__assembly_2__model_1

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

Download this curve (.dat)

1g61__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1g61__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	17.48 Å
Rg (electron density)	16.21 Å
Total Rg	17.31 Å
Atom count	1692
Residues	225
Excluded volume	30662 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1g61__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1g61__assembly_2__model_1`	monomeric （1）	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) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1g61a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.126 — Pentein, beta/alpha-propeller
Superfamily Superfamily superfamily	d.126.1 — Pentein
Family Family family	d.126.1.1 — Ribosome anti-association factor eIF6 (aIF6)

Domain ID domain_id	d1g61b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.126 — Pentein, beta/alpha-propeller
Superfamily Superfamily superfamily	d.126.1 — Pentein
Family Family family	d.126.1.1 — Ribosome anti-association factor eIF6 (aIF6)

CATH v4.4 (2 domains)

Domain ID domain_id	1g61A00
Class class	3 — Alpha Beta
Architecture architecture	75 — 5-stranded Propeller
Topology topology	10 — L-arginine/glycine Amidinotransferase; Chain A
Homologous superfamily homologous superfamily	10 — L-arginine/glycine Amidinotransferase; Chain A

Domain ID domain_id	1g61B00
Class class	3 — Alpha Beta
Architecture architecture	75 — 5-stranded Propeller
Topology topology	10 — L-arginine/glycine Amidinotransferase; Chain A
Homologous superfamily homologous superfamily	10 — L-arginine/glycine Amidinotransferase; Chain A

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Unit-cell length a length_a	118.067 Å
Unit-cell length b length_b	46.964 Å
Unit-cell length c length_c	84.607 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	98.53 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.300 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.1320
R_work r_work	0.1320
R_free r_free	0.1790

Description description	TRANSLATION INITIATION FACTOR 6
Molecular weight formula_weight	24481.1 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	4088

CRYSTAL STRUCTURE OF M.JANNASCHII EIF6

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

TRANSLATION INITIATION FACTOR 6

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

1g61__assembly_2__model_1

1g61__assembly_2__model_1 | I(q)

1g61__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Methanocaldococcus jannaschii
NCBI taxonomy ID ncbi_taxonomy_id	2190
Host organism host_organism	Escherichia coli BL21

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	704

CRYSTAL STRUCTURE OF M.JANNASCHII EIF6

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

TRANSLATION INITIATION FACTOR 6

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

1g61__assembly_2__model_1

1g61__assembly_2__model_1 | I(q)

1g61__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)