PDBe 1q1e

X-ray diffraction
2.9Å resolution

The ATPase component of E. coli maltose transporter (MalK) in the nucleotide-free form


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Maltose/maltodextrin import ATP-binding protein MalK Chains: A, B
Molecule details ›
Chains: A, B
Length: 381 amino acids
Theoretical weight: 42.18 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
  • Canonical: P68187 (Residues: 1-371; Coverage: 100%)
Gene names: JW3995, b4035, malK
Sequence domains:
Structure domains:

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X4A
Spacegroup: P21
Unit cell:
a: 64.615Å b: 102.041Å c: 99.288Å
α: 90° β: 107.1° γ: 90°
R R work R free
0.244 0.244 0.276
Expression system: Escherichia coli