PDBe 1q1b

X-ray diffraction
2.8Å resolution

Crystal structure of E. coli 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, C, D
Molecule details ›
Chains: A, B, C, D
Length: 381 amino acids
Theoretical weight: 42.24 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: P1
Unit cell:
a: 60.617Å b: 93.54Å c: 99.796Å
α: 77.63° β: 79.38° γ: 73.2°
R R work R free
0.249 0.249 0.304
Expression system: Escherichia coli