PDBe 3fh6

X-ray diffraction
4.5Å resolution

Crystal structure of the resting state maltose transporter from E. coli

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Maltose transport system permease protein MalF Chains: F, H
Molecule details ›
Chains: F, H
Length: 480 amino acids
Theoretical weight: 53.09 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P02916 (Residues: 36-514; Coverage: 93%)
Gene names: JW3993, b4033, malF
Sequence domains:
Maltose transport system permease protein MalG Chains: G, I
Molecule details ›
Chains: G, I
Length: 296 amino acids
Theoretical weight: 32.25 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P68183 (Residues: 1-296; Coverage: 100%)
Gene names: JW3992, b4032, malG
Sequence domains: Binding-protein-dependent transport system inner membrane component
Maltose/maltodextrin import ATP-binding protein MalK Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 381 amino acids
Theoretical weight: 42.18 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P68187 (Residues: 1-371; Coverage: 100%)
Gene names: JW3995, b4035, malK
Sequence domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-D
Spacegroup: I222
Unit cell:
a: 171.097Å b: 209.48Å c: 438.741Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.34 0.34 0.363
Expression system: Escherichia coli