5a4m

X-ray diffraction
1.7Å resolution

Mechanism of Hydrogen activation by NiFe-hydrogenases

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-142263 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Hydrogenase-1 large chain Chains: L, M
Molecule details ›
Chains: L, M
Length: 582 amino acids
Theoretical weight: 64.75 KDa
Source organism: Escherichia coli str. K-12 substr. MC4100
UniProt:
  • Canonical: P0ACD8 (Residues: 1-582; Coverage: 98%)
Gene names: JW0955, b0973, hyaB
Sequence domains: Nickel-dependent hydrogenase
Structure domains: Cytochrome-c3 Hydrogenase, chain B
Hydrogenase-1 small chain Chains: S, T
Molecule details ›
Chains: S, T
Length: 278 amino acids
Theoretical weight: 30.91 KDa
Source organism: Escherichia coli str. K-12 substr. MC4100
UniProt:
  • Canonical: P69739 (Residues: 46-311; Coverage: 81%)
Gene names: JW0954, b0972, hyaA
Sequence domains:
Structure domains:

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I04
Spacegroup: P212121
Unit cell:
a: 93.671Å b: 97.162Å c: 182.911Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.136 0.134 0.162