SAXSdb — 1txo

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

Putative Bacterial Enzyme

Mycobacterium tuberculosis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	MANGANESE (II) ION × 3 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	MANGANESE (II) ION × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8VKT2_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–237； UniProt 1–237 Author chain B； PDBConstruct 1–237； UniProt 1–237

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	1txo
Deposition date deposition_date	2004-07-05
Structure title title	Crystal structure of the Mycobacterium tuberculosis serine/threonine phosphatase PstP/Ppp at 1.95 A.
Keywords keywords	;Putative Bacterial Enzyme, Serine/threonine protein phosphatases, PstP/Ppp, Structural Genomics, PSI, Protein Structure Initiative, TB Structural Genomics Consortium, TBSGC, 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.

1txo__assembly_2__model_1

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

Download this curve (.dat)

1txo__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1txo__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	18.22 Å
Rg (electron density)	17.14 Å
Total Rg	18.03 Å
Atom count	1724
Residues	231
Excluded volume	30561 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1txo__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1txo__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 (3)

Entity 1 Entity 1 polymer

Description description	Putative Bacterial Enzyme
Molecular weight formula_weight	25483.7 kDa
EC 编号 ec_number	3.1.3.16
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	3701

MTLVLRYAARSDRGLVRANNEDSVYAGARLLALADGMGGHAAGEVASQLVIAALAHLDDDEPGGDLLAKLDAAVRAGNSAIAAQVEMEPDLEGMGTTLTAILFAGNRLGLVHIGDSRGYLLRDGELTQITKDDTFVQTLVDEGRITPEEAHSHPQRSLIMRALTGHEVEPTLTMREARAGDRYLLCSDGLSDPVSDETILEALQIPEVAESAHRLIELALRGGGPDNVTVVVADLEH

Source Source

Source organism organism	Mycobacterium tuberculosis
NCBI taxonomy ID ncbi_taxonomy_id	1773
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MANGANESE (II) ION
Molecular weight formula_weight	54.9 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	241

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1txoa_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.219 — PP2C-like
Superfamily Superfamily superfamily	d.219.1 — PP2C-like
Family Family family	d.219.1.1 — PP2C-like

Domain ID domain_id	d1txob_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.219 — PP2C-like
Superfamily Superfamily superfamily	d.219.1 — PP2C-like
Family Family family	d.219.1.1 — PP2C-like

CATH v4.4 (2 domains)

Domain ID domain_id	1txoA00
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	40 — Phosphatase 2c; domain 1
Homologous superfamily homologous superfamily	10 — PPM-type phosphatase domain

Domain ID domain_id	1txoB00
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	40 — Phosphatase 2c; domain 1
Homologous superfamily homologous superfamily	10 — PPM-type phosphatase domain

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Unit-cell length a length_a	67.638 Å
Unit-cell length b length_b	58.757 Å
Unit-cell length c length_c	73.815 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	102.15 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.950 Å
Low-resolution limit resolution_low	72.550 Å
R factor r_factor	0.2006
R_work r_work	0.1990
R_free r_free	0.2303

Crystal structure of the Mycobacterium tuberculosis serine/threonine phosphatase PstP/Ppp at 1.95 A.

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

Putative Bacterial Enzyme

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

1txo__assembly_2__model_1

1txo__assembly_2__model_1 | I(q)

1txo__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 (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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of the Mycobacterium tuberculosis serine/threonine phosphatase PstP/Ppp at 1.95 A.

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

Putative Bacterial Enzyme

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

1txo__assembly_2__model_1

1txo__assembly_2__model_1 | I(q)

1txo__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 (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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)