SAXSdb — 2mjp

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

PYROPHOSPHATASE

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NTPA_METJA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–193； UniProt 10–193 Author chain B； PDBConstruct 1–193； UniProt 10–193

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	2mjp
Deposition date deposition_date	1999-01-27
Structure title title	STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226
Keywords keywords	;STRUCTURAL GENOMICS, PYROPHOSPHATASE, HYPERTHERMAL PROTEIN, BSGC structure funded by NIH, Protein Structure Initiative, PSI, Berkeley Structural Genomics Center ;; STRUCTURAL GENOMICS
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.

2mjp__assembly_1__model_1

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

Download this curve (.dat)

2mjp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2mjp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.47 Å
Rg (electron density)	23.67 Å
Total Rg	24.61 Å
Atom count	3021
Residues	368
Excluded volume	54172 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2mjp__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)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d2mjpa_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.4 — ITPase-like
Family Family family	c.51.4.1 — ITPase (Ham1)

Domain ID domain_id	d2mjpb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.51 — Anticodon-binding domain-like
Superfamily Superfamily superfamily	c.51.4 — ITPase-like
Family Family family	c.51.4.1 — ITPase (Ham1)

CATH v4.4 (2 domains)

Domain ID domain_id	2mjpA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	950 — Maf protein
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	2mjpB00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	950 — Maf protein
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	44.360 Å
Unit-cell length b length_b	72.130 Å
Unit-cell length c length_c	140.530 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	2.200 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	—
R_work r_work	0.2040
R_free r_free	0.2590

Description description	PYROPHOSPHATASE
Molecular weight formula_weight	22232.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	3182

STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226

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

PYROPHOSPHATASE

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

2mjp__assembly_1__model_1

2mjp__assembly_1__model_1 | I(q)

2mjp__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

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)

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	161

STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226

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

PYROPHOSPHATASE

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

2mjp__assembly_1__model_1

2mjp__assembly_1__model_1 | I(q)

2mjp__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

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)