SAXSdb — 1exc

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

PROTEIN MAF

Bacillus subtilis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	SODIUM ION × 1 DEOXYURIDINE-5'-TRIPHOSPHATE × 4 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	SODIUM ION × 1 DEOXYURIDINE-5'-TRIPHOSPHATE × 4 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MAF_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–189； UniProt 1–189 Author chain B； PDBConstruct 1–189； UniProt 1–189

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	1exc
Deposition date deposition_date	2000-05-02
Structure title title	CRYSTAL STRUCTURE OF B. SUBTILIS MAF PROTEIN COMPLEXED WITH D-(UTP)
Keywords keywords	;B.subtilis Maf protein complexed with dUTP, Structural Genomics, PSI, Protein Structure Initiative, Midwest Center for Structural Genomics, MCSG ;; 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.

1exc__assembly_1__model_1

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

Download this curve (.dat)

1exc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1exc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.97 Å
Rg (electron density)	24.99 Å
Total Rg	25.42 Å
Atom count	3039
Residues	370
Excluded volume	53810 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1exc__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1exc__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 (4)

Entity 1 Entity 1 polymer

Description description	PROTEIN MAF
Molecular weight formula_weight	21323.4 kDa
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	3179

MTKPLILASQSPRRKELLDLLQLPYSIIVSEVEEKLNRNFSPEENVQWLAKQKAKAVADLHPHAIVIGADTMVCLDGECLGKPQDQEEAASMLRRLSGRSHSVITAVSIQAENHSETFYDKTEVAFWSLSEEEIWTYIETKEPMDKAGAYGIQGRGALFVKKIDGDYYSVMGLPISKTMRALRHFDIRA

Source Source

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	1423
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	SODIUM ION
Molecular weight formula_weight	23.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	DEOXYURIDINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	468.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	140

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1exca_
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.51.4.2 — Maf-like

Domain ID domain_id	d1excb_
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.51.4.2 — Maf-like

CATH v4.4 (2 domains)

Domain ID domain_id	1excA00
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	1excB00
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	62.100 Å
Unit-cell length b length_b	86.580 Å
Unit-cell length c length_c	93.730 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	2.700 Å
Low-resolution limit resolution_low	17.000 Å
R factor r_factor	—
R_work r_work	0.1970
R_free r_free	0.2600

CRYSTAL STRUCTURE OF B. SUBTILIS MAF PROTEIN COMPLEXED WITH D-(UTP)

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

PROTEIN MAF

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

1exc__assembly_1__model_1

1exc__assembly_1__model_1 | I(q)

1exc__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 (4)

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 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF B. SUBTILIS MAF PROTEIN COMPLEXED WITH D-(UTP)

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

PROTEIN MAF

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

1exc__assembly_1__model_1

1exc__assembly_1__model_1 | I(q)

1exc__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 (4)

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 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)