SAXSdb — 2in0

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

Endonuclease PI-MtuI

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	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RECA_MYCTU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–102； UniProt 252–353 Author chain A； PDBConstruct 103–139； UniProt 655–691

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	2in0
Deposition date deposition_date	2006-10-05
Structure title title	crystal structure of Mtu recA intein splicing domain
Keywords keywords	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.

2in0__assembly_1__model_1

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

Download this curve (.dat)

2in0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2in0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.34 Å
Rg (electron density)	14.01 Å
Total Rg	15.15 Å
Atom count	1088
Residues	139
Excluded volume	19219 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2in0__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 (2)

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	2in0A00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	16 — Endonuclease - Pi-scei; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Hedgehog/Intein (Hint) domain

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Unit-cell length a length_a	36.840 Å
Unit-cell length b length_b	47.460 Å
Unit-cell length c length_c	64.630 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	1.600 Å
Low-resolution limit resolution_low	29.100 Å
R factor r_factor	0.2450
R_work r_work	0.2450
R_free r_free	0.2750

Description description	Endonuclease PI-MtuI
Molecular weight formula_weight	15423.5 kDa
EC 编号 ec_number	3.1.-.-
Mutation mutation	delta 103-403,Q95V,P96R,R97D,R98V,F99E,D100T,F102E,V67L
Source method src_method	man
Copy count entity_count	1

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1200

crystal structure of Mtu recA intein splicing domain

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

Endonuclease PI-MtuI

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

2in0__assembly_1__model_1

2in0__assembly_1__model_1 | I(q)

2in0__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)

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

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	112

crystal structure of Mtu recA intein splicing domain

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

Endonuclease PI-MtuI

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

2in0__assembly_1__model_1

2in0__assembly_1__model_1 | I(q)

2in0__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

7. Citations (1)