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Identification of a Stable Complex Between a [NiFe]-hydrogenase Catalytic Subunit and Its Maturation Protease

Overview
Journal FEBS Lett
Specialty Biochemistry
Date 2016 Dec 29
PMID 28029689
Citations 4
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Abstract

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.

Citing Articles

Activation of a [NiFe]-hydrogenase-4 isoenzyme by maturation proteases.

Finney A, Buchanan G, Palmer T, Coulthurst S, Sargent F Microbiology (Reading). 2020; 166(9):854-860.

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A membrane-bound [NiFe]-hydrogenase large subunit precursor whose C-terminal extension is not essential for cofactor incorporation but guarantees optimal maturation.

Hartmann S, Frielingsdorf S, Caserta G, Lenz O Microbiologyopen. 2020; 9(6):1197-1206.

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Delimiting the Function of the C-Terminal Extension of the [NiFe]-Hydrogenase 2 Large Subunit Precursor.

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