SAXSdb — 1kyt

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

hypothetical protein TA0175

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	CALCIUM ION × 6 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 6 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PGP_THEAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–227； UniProt 1–224 Author chain B； PDBConstruct 4–227； UniProt 1–224

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	1kyt
Deposition date deposition_date	2002-02-05
Structure title title	Crystal Structure of Thermoplasma acidophilum 0175 (APC014)
Keywords keywords	;structural genomics, putative hydrolase, 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.

1kyt__assembly_2__model_1

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

Download this curve (.dat)

1kyt__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1kyt__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	24.42 Å
Rg (electron density)	23.16 Å
Total Rg	24.05 Å
Atom count	3582
Residues	432
Excluded volume	64148 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1kyt__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1kyt__assembly_2__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 TA0175
Molecular weight formula_weight	26025.0 kDa
Mutation mutation	T12N
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	4085

GSHMIRLAAIDVDGNLTDRDRLISTKAIESIRSAEKKGLTVSLLSGNVIPVVYALKIFLGINGPVFGENGGIMFDNDGSIKKFFSNEGTNKFLEEMSKRTSMRSILTNRWREASTGFDIDPEDVDYVRKEAESRGFVIFYSGYSWHLMNRGEDKAFAVNKLKEMYSLEYDEILVIGDSNNDMPMFQLPVRKACPANATDNIKAVSDFVSDYSYGEEIGQIFKHFELM

Source Source

Source organism organism	Thermoplasma acidophilum
NCBI taxonomy ID ncbi_taxonomy_id	2303
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	437

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1kyta1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.108 — HAD-like
Superfamily Superfamily superfamily	c.108.1 — HAD-like
Family Family family	c.108.1.10 — Predicted hydrolases Cof

Domain ID domain_id	d1kyta2
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	d1kytb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.108 — HAD-like
Superfamily Superfamily superfamily	c.108.1 — HAD-like
Family Family family	c.108.1.10 — Predicted hydrolases Cof

Domain ID domain_id	d1kytb2
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 (4 domains)

Domain ID domain_id	1kytA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1000 — HAD superfamily/HAD-like

Domain ID domain_id	1kytA02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1070 — Hypothetical Protein Ta0175; Chain: A, domain 2
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1kytB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1000 — HAD superfamily/HAD-like

Domain ID domain_id	1kytB02
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1070 — Hypothetical Protein Ta0175; Chain: A, domain 2
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	88.526 Å
Unit-cell length b length_b	99.316 Å
Unit-cell length c length_c	113.886 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	16

Space group space_group	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	1.700 Å
Low-resolution limit resolution_low	43.140 Å
R factor r_factor	0.2260
R_work r_work	0.2240
R_free r_free	0.2460

Crystal Structure of Thermoplasma acidophilum 0175 (APC014)

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

hypothetical protein TA0175

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

1kyt__assembly_2__model_1

1kyt__assembly_2__model_1 | I(q)

1kyt__assembly_2__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 (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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal Structure of Thermoplasma acidophilum 0175 (APC014)

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

hypothetical protein TA0175

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

1kyt__assembly_2__model_1

1kyt__assembly_2__model_1 | I(q)

1kyt__assembly_2__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 (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) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)