SAXSdb — 1t6c

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

exopolyphosphatase

Aquifex aeolicus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	IODIDE ION × 1 CALCIUM ION × 1 CHLORIDE ION × 3 (4S)-2-METHYL-2,4-PENTANEDIOL × 6 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	O67040_AQUAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–315； UniProt 1–312

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	1t6c
Deposition date deposition_date	2004-05-06
Structure title title	Structural characterization of the Ppx/GppA protein family: crystal structure of the Aquifex aeolicus family member
Keywords keywords	alpha/beta protein, Actin-like fold, HYDROLASE; HYDROLASE
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.

1t6c__assembly_1__model_1

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

Download this curve (.dat)

1t6c__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1t6c__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.20 Å
Rg (electron density)	20.17 Å
Total Rg	21.11 Å
Atom count	2509
Residues	306
Excluded volume	45673 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1t6c__assembly_1__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 (6)

Entity 1 Entity 1 polymer

Description description	exopolyphosphatase
Molecular weight formula_weight	35831.3 kDa
EC 编号 ec_number	3.6.1.11, 3.6.1.40
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2971

GSHMSLDNKPIMRVASIDIGSYSVRLTIAQIKDGKLSIILERGRITSLGTKVKETGRLQEDRIEETIQVLKEYKKLIDEFKVERVKAVATEAIRRAKNAEEFLERVKREVGLVVEVITPEQEGRYAYLAVAYSLKPEGEVCVVDQGGGSTEYVFGKGYKVREVISLPIGIVNLTETFFKQDPPTEEEVKRFFEFLEKELSKVKKPVDTIVGLGGTITTLAALEYNVYPYDPQKVHGKVLTYGQIKKWFDTFKEIPSEERSKRFRQVEDRRAKVILAGIGIFLKTLEIFEKDCLIVSDWGLREGVLVSEVLKENHS

Source Source

Source organism organism	Aquifex aeolicus
NCBI taxonomy ID ncbi_taxonomy_id	224324
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	IODIDE ION
Molecular weight formula_weight	126.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 5 Entity 5 non-polymer

Description description	(4S)-2-METHYL-2,4-PENTANEDIOL
Molecular weight formula_weight	118.2 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	390

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1t6ca1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.8 — Ppx/GppA phosphatase

Domain ID domain_id	d1t6ca2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.55 — Ribonuclease H-like motif
Superfamily Superfamily superfamily	c.55.1 — Actin-like ATPase domain
Family Family family	c.55.1.8 — Ppx/GppA phosphatase

CATH v4.4 (2 domains)

Domain ID domain_id	1t6cA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	40 — ATPase, nucleotide binding domain

Domain ID domain_id	1t6cA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	420 — Nucleotidyltransferase; domain 5
Homologous superfamily homologous superfamily	150 — Exopolyphosphatase. Domain 2

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Unit-cell length a length_a	50.776 Å
Unit-cell length b length_b	70.287 Å
Unit-cell length c length_c	90.783 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	4

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

Resolution resolution	1.530 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	0.1620
R_work r_work	0.1620
R_free r_free	0.2170

Structural characterization of the Ppx/GppA protein family: crystal structure of the Aquifex aeolicus family member

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

exopolyphosphatase

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

1t6c__assembly_1__model_1

1t6c__assembly_1__model_1 | I(q)

1t6c__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (4)

Structural characterization of the Ppx/GppA protein family: crystal structure of the Aquifex aeolicus family member

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

exopolyphosphatase

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

1t6c__assembly_1__model_1

1t6c__assembly_1__model_1 | I(q)

1t6c__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 (6)

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 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (4)