SAXSdb — 6bl6

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

Lipid A export ATP-binding/permease protein MsbA

Salmonella enterica subsp. enterica serovar Typhimurium str. LT2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MSBA_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–576； UniProt 7–582 Author chain B； PDBConstruct 1–576； UniProt 7–582

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	6bl6
Deposition date deposition_date	2017-11-09
Structure title title	Crystallization of lipid A transporter MsbA from Salmonella typhimurium
Keywords keywords	MsbA, Lipid A co-crystallization, ABC transporters, Staphylococcus typhimurium, MEMBRANE PROTEIN; MEMBRANE PROTEIN
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.

6bl6__assembly_2__model_1

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

Download this curve (.dat)

6bl6__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6bl6__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	44.79 Å
Rg (electron density)	44.41 Å
Total Rg	44.52 Å
Atom count	8894
Residues	1150
Excluded volume	160080 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6bl6__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`6bl6__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 (1)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d6bl6a1
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.37 — ABC transporter transmembrane region
Superfamily Superfamily superfamily	f.37.1 — ABC transporter transmembrane region
Family Family family	f.37.1.1 — ABC transporter transmembrane region

Domain ID domain_id	d6bl6a2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.0 — automated matches

Domain ID domain_id	d6bl6b1
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.37 — ABC transporter transmembrane region
Superfamily Superfamily superfamily	f.37.1 — ABC transporter transmembrane region
Family Family family	f.37.1.1 — ABC transporter transmembrane region

Domain ID domain_id	d6bl6b2
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	6bl6A01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1560 — ABC transporter transmembrane region fold
Homologous superfamily homologous superfamily	10 — ABC transporter type 1, transmembrane domain

Domain ID domain_id	6bl6A02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6bl6B01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	1560 — ABC transporter transmembrane region fold
Homologous superfamily homologous superfamily	10 — ABC transporter type 1, transmembrane domain

Domain ID domain_id	6bl6B02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

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Unit-cell length a length_a	82.052 Å
Unit-cell length b length_b	154.819 Å
Unit-cell length c length_c	228.886 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	50.010 Å
R factor r_factor	0.2710
R_work r_work	0.2695
R_free r_free	0.3007

Description description	Lipid A export ATP-binding/permease protein MsbA
Molecular weight formula_weight	63607.6 kDa
EC 编号 ec_number	3.6.3.-
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	8894

Crystallization of lipid A transporter MsbA from Salmonella typhimurium

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

Lipid A export ATP-binding/permease protein MsbA

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

6bl6__assembly_2__model_1

6bl6__assembly_2__model_1 | I(q)

6bl6__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Source organism organism	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
NCBI taxonomy ID ncbi_taxonomy_id	99287
Host organism host_organism	Escherichia coli

Crystallization of lipid A transporter MsbA from Salmonella typhimurium

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

Lipid A export ATP-binding/permease protein MsbA

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

6bl6__assembly_2__model_1

6bl6__assembly_2__model_1 | I(q)

6bl6__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)