PDBe 3b60

X-ray diffraction
3.7Å resolution

Crystal Structure of MsbA from Salmonella typhimurium with AMPPNP, higher resolution form

Primary publication:
Flexibility in the ABC transporter MsbA: Alternating access with a twist.
Proc. Natl. Acad. Sci. U.S.A. 104 19005-10 (2007)
PMID: 18024585

Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Lipid A export ATP-binding/permease protein MsbA Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 582 amino acids
Theoretical weight: 64.41 KDa
Source organism: Salmonella enterica subsp. enterica serovar Typhimurium
Expression system: Escherichia coli BL21
  • Canonical: P63359 (Residues: 1-582; Coverage: 100%)
Gene names: STM0984, msbA
Sequence domains:
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.3.1
Spacegroup: C2
Unit cell:
a: 249.641Å b: 119.904Å c: 168.8Å
α: 90° β: 120.61° γ: 90°
R R work R free
0.307 0.307 0.343
Expression system: Escherichia coli BL21