Identification of a Stable Complex Between a [NiFe]-hydrogenase Catalytic Subunit and Its Maturation Protease
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Salmonella enterica serovar Typhimurium has the ability to use molecular hydrogen as a respiratory electron donor. This is facilitated by three [NiFe]-hydrogenases termed Hyd-1, Hyd-2, and Hyd-5. Hyd-1 and Hyd-5 are homologous oxygen-tolerant [NiFe]-hydrogenases. A critical step in the biosynthesis of a [NiFe]-hydrogenase is the proteolytic processing of the catalytic subunit. In this work, the role of the maturation protease encoded within the Hyd-5 operon, HydD, was found to be partially complemented by the maturation protease encoded in the Hyd-1 operon, HyaD. In addition, both maturation proteases were shown to form stable complexes, in vivo and in vitro, with the catalytic subunit of Hyd-5. The protein-protein interactions were not detectable in a strain that could not make the enzyme metallocofactor.
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Finney A, Buchanan G, Palmer T, Coulthurst S, Sargent F Microbiology (Reading). 2020; 166(9):854-860.
PMID: 32731905 PMC: 7654741. DOI: 10.1099/mic.0.000963.
Hartmann S, Frielingsdorf S, Caserta G, Lenz O Microbiologyopen. 2020; 9(6):1197-1206.
PMID: 32180370 PMC: 7294309. DOI: 10.1002/mbo3.1029.
Molecular Hydrogen Metabolism: a Widespread Trait of Pathogenic Bacteria and Protists.
Benoit S, Maier R, Sawers R, Greening C Microbiol Mol Biol Rev. 2020; 84(1).
PMID: 31996394 PMC: 7167206. DOI: 10.1128/MMBR.00092-19.
Pinske C, Thomas C, Nutschan K, Sawers R Front Microbiol. 2019; 10:2223.
PMID: 31611859 PMC: 6769069. DOI: 10.3389/fmicb.2019.02223.