SAXSdb — 2qh1

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

Hypothetical protein Ta0289

Thermoplasma acidophilum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	FE (II) ION × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9HLD9_THEAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–198； UniProt 1–178 Author chain B； PDBConstruct 21–198； UniProt 1–178

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	2qh1
Deposition date deposition_date	2007-06-29
Structure title title	Structure of TA289, a CBS-rubredoxin-like protein, in its Fe+2-bound state
Keywords keywords	;CBS-rubredoxin-like protein, Fe+2, Hypothetical protein, UNKNOWN FUNCTION, Structural Genomics, Structural Genomics Consortium, SGC, PSI-2, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG ;; 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.

2qh1__assembly_1__model_1

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

Download this curve (.dat)

2qh1__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2qh1__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.09 Å
Rg (electron density)	20.81 Å
Total Rg	21.84 Å
Atom count	2904
Residues	364
Excluded volume	51949 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2qh1__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 (3)

Entity 1 Entity 1 polymer

Description description	Hypothetical protein Ta0289
Molecular weight formula_weight	22465.8 kDa
Mutation mutation	S109P
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	3263

MGSSHHHHHHSSGLVPRGGHMFMRVEKIMNSNFKTVNWNTTVFDAVKIMNENHLYGLVVKDDNGNDVGLLSERSIIKRFIPRNKKPDEVPIRLVMRKPIPKVKSDYDVKDVAAYLSENGLERCAVVDDPGRVVGIVTLTDLSRYLSRASITDILLSHRTKDYQHLCPKCGVGVLEPVYNEKGEIKVFRCSNPACDYEE

Source Source

Source organism organism	Thermoplasma acidophilum
NCBI taxonomy ID ncbi_taxonomy_id	273075
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	FE (II) ION
Molecular weight formula_weight	55.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	345

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d2qh1a1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.37 — CBS-domain pair
Superfamily Superfamily superfamily	d.37.1 — CBS-domain pair
Family Family family	d.37.1.1 — CBS-domain pair

Domain ID domain_id	d2qh1a2
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	d2qh1b1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.37 — CBS-domain pair
Superfamily Superfamily superfamily	d.37.1 — CBS-domain pair
Family Family family	d.37.1.1 — CBS-domain pair

Domain ID domain_id	d2qh1b2
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	2qh1A00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	580 — CBS-domain
Homologous superfamily homologous superfamily	10 — CBS-domain

Domain ID domain_id	2qh1B00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	580 — CBS-domain
Homologous superfamily homologous superfamily	10 — CBS-domain

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Unit-cell length a length_a	58.806 Å
Unit-cell length b length_b	63.031 Å
Unit-cell length c length_c	97.474 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	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	19.670 Å
R factor r_factor	0.2020
R_work r_work	0.2020
R_free r_free	0.2370

Structure of TA289, a CBS-rubredoxin-like protein, in its Fe+2-bound state

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

Hypothetical protein Ta0289

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

2qh1__assembly_1__model_1

2qh1__assembly_1__model_1 | I(q)

2qh1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Structure of TA289, a CBS-rubredoxin-like protein, in its Fe+2-bound state

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

Hypothetical protein Ta0289

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

2qh1__assembly_1__model_1

2qh1__assembly_1__model_1 | I(q)

2qh1__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

CATH v4.4 (2 domains)

7. Citations (1)