6ZK8 image
Entry Detail
PDB ID:
6ZK8
Keywords:
OXIDOREDUCTASE
Title:
Native crystal structure of anaerobic F420H2-Oxidase from Methanothermococcus thermolithotrophicus at 1.8A resolution
Biological Source:
Source Organism:
Methanothermococcus thermolithotrophicus
Host Organism:
Methanothermococcus thermolithotrophicus
PDB Version:
Deposition Date:
2020-06-30
Release Date:
2020-11-25
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.83 Å
R-Value Free:
0.20
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
C 1 2 1
6ZK8 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Coenzyme F420H2 oxidase (FprA)
Chain IDs:A, B (auth: O)
Chain Length:410
Number of Molecules:2
Biological Source:Methanothermococcus thermolithotrophicus
UniProt ID:A0A452CSW8 Pfam ID:PF19583, PF00258
Ligand Molecules
1PE
FE
FMN
PEG
SO4
Primary Citation
Krypton-derivatization highlights O 2 -channeling in a four-electron reducing oxidase.
Chem.Commun.(Camb.) 56 10863 10866 (2020)
PMID: 32940290 DOI: 10.1039/d0cc04557h

Abstact

F420H2-oxidase (FprA) catalyses the four-electron reduction of O2 to 2H2O using the reduced form of F420 as electron donor. The hydrophobic O2-channel detected by Kr-derivatization and the concerted movement of a gating loop could contribute to prevent unwanted side-reaction between the catalytic intermediates and solvents, therefore preventing reactive oxygen species formation.

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Primary Citation of related structures
6ZK8