SAXSdb — 3gab

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

DNA mismatch repair protein mutL

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	water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MUTL_BACSU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–197； UniProt 434–627 Author chain B； PDBConstruct 4–197； UniProt 434–627 Author chain C； PDBConstruct 4–197； UniProt 434–627 Author chain D； PDBConstruct 4–197； UniProt 434–627

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	3gab
Deposition date deposition_date	2009-02-17
Structure title title	C-terminal domain of Bacillus subtilis MutL crystal form I
Keywords keywords	mismatch repair, endonuclease activity, DNA damage, DNA repair, 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.

3gab__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3gab__assembly_3__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3gab__assembly_3__model_1 | P(r) · Pending

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

Rg（Guinier）	33.00 Å
Rg (electron density)	34.16 Å
Total Rg	33.95 Å
Atom count	3034
Residues	372
Excluded volume	54082 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3gab__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3gab__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3gab__assembly_3__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 (2)

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6. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	3gabA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1540 — formyl-coa transferase, domain 3
Homologous superfamily homologous superfamily	20 — MutL, C-terminal domain, dimerisation subdomain

Domain ID domain_id	3gabA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1370 — Ribosomal Protein S8; Chain: A, domain 1
Homologous superfamily homologous superfamily	100 — MutL, C-terminal domain, regulatory subdomain

Domain ID domain_id	3gabB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1540 — formyl-coa transferase, domain 3
Homologous superfamily homologous superfamily	20 — MutL, C-terminal domain, dimerisation subdomain

Domain ID domain_id	3gabB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1370 — Ribosomal Protein S8; Chain: A, domain 1
Homologous superfamily homologous superfamily	100 — MutL, C-terminal domain, regulatory subdomain

Domain ID domain_id	3gabC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1540 — formyl-coa transferase, domain 3
Homologous superfamily homologous superfamily	20 — MutL, C-terminal domain, dimerisation subdomain

Domain ID domain_id	3gabC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1370 — Ribosomal Protein S8; Chain: A, domain 1
Homologous superfamily homologous superfamily	100 — MutL, C-terminal domain, regulatory subdomain

Domain ID domain_id	3gabD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1540 — formyl-coa transferase, domain 3
Homologous superfamily homologous superfamily	20 — MutL, C-terminal domain, dimerisation subdomain

Domain ID domain_id	3gabD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1370 — Ribosomal Protein S8; Chain: A, domain 1
Homologous superfamily homologous superfamily	100 — MutL, C-terminal domain, regulatory subdomain

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Unit-cell length a length_a	88.288 Å
Unit-cell length b length_b	94.894 Å
Unit-cell length c length_c	218.663 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	32

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	29.778 Å
R factor r_factor	0.2189
R_work r_work	0.2164
R_free r_free	0.2670

Description description	DNA mismatch repair protein mutL
Molecular weight formula_weight	22867.2 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	6122

C-terminal domain of Bacillus subtilis MutL crystal form I

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

DNA mismatch repair protein mutL

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

3gab__assembly_3__model_1

3gab__assembly_3__model_1 | I(q)

3gab__assembly_3__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)

Source organism organism	Bacillus subtilis
NCBI taxonomy ID ncbi_taxonomy_id	1423
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	101

C-terminal domain of Bacillus subtilis MutL crystal form I

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

DNA mismatch repair protein mutL

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

3gab__assembly_3__model_1

3gab__assembly_3__model_1 | I(q)

3gab__assembly_3__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 8 domains

CATH v4.4 (8 domains)

7. Citations (1)