› 4xtc

X-ray diffraction
3.6Å resolution

Crystal structure of bacterial alginate ABC transporter in complex with alginate pentasaccharide-bound periplasmic protein

Released:
DOI: 10.2210/pdb4xtc/pdb
PDB entry 4xtc coloured by chain, front view.
PDB entry 4xtc coloured by chain, side view.
PDB entry 4xtc coloured by chain, top view.
Source organism: Sphingomonas sp. A1
Primary publication:
A solute-binding protein in the closed conformation induces ATP hydrolysis in a bacterial ATP-binding cassette transporter involved in the import of alginate.
Kaneko A, Uenishi K, Maruyama Y, Mizuno N, Baba S, Kumasaka T, Mikami B, Murata K, Hashimoto W
J Biol Chem 292 15681-15690 (2017)
PMID: 28768763

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
PDBe Complex ID:
PDB-CPX-192159 (preferred)
Entry contents:
4 distinct polypeptide molecules
Macromolecules (5 distinct):
ABC transmembrane type-1 domain-containing protein Chain: M
Molecule details ›
Chain: M
Length: 301 amino acids
Theoretical weight: 34.29 KDa
Source organism: Sphingomonas sp. A1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9KWT8 (Residues: 24-324; Coverage: 93%)
Gene name: algM1
Sequence domains: Binding-protein-dependent transport system inner membrane component
Structure domains: MetI-like
ABC transmembrane type-1 domain-containing protein Chain: N
Molecule details ›
Chain: N
Length: 305 amino acids
Theoretical weight: 34.5 KDa
Source organism: Sphingomonas sp. A1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9KWT7 (Residues: 1-293; Coverage: 100%)
Gene name: algM2
Sequence domains: Binding-protein-dependent transport system inner membrane component
Structure domains: MetI-like
ABC transporter domain-containing protein Chains: S, T
Molecule details ›
Chains: S, T
Length: 363 amino acids
Theoretical weight: 39.57 KDa
Source organism: Sphingomonas sp. A1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9KWT9 (Residues: 1-363; Coverage: 100%)
Gene name: algS
Sequence domains:
Structure domains:
Extracellular solute-binding protein Chain: Q
Molecule details ›
Chain: Q
Length: 516 amino acids
Theoretical weight: 59.69 KDa
Source organism: Sphingomonas sp. A1
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9KWT5 (Residues: 1-516; Coverage: 100%)
Gene name: algQ2
Sequence domains: Bacterial extracellular solute-binding protein
Structure domains: Periplasmic binding protein-like II

Ligands and Environments

Carbohydrate polymer : NEW Components: BEM
Carbohydrate polymer
No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL38B1
Spacegroup: P212121
Unit cell:
a: 71.608Å b: 132.963Å c: 272.973Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.241 0.238 0.288
Expression system: Escherichia coli

Quick links

Citations

8 citation in other articles

Structural and biochemical characterisation of a novel alginate lyase from Paenibacillus sp. str. FPU-7.
Itoh et al. (2019)
7 more

2 mentions without citation

The role of bacterial transport systems in the removal of host antimicrobial peptides in Gram-negative bacteria.
Blair et al. (2022)
1 more