Role of the conserved cysteine residues of the 11.5 kDa subunit in complex I catalytic properties.

Abstract excerpt

Mitochondrial complex I exists as a mixture of two inter-convertible forms: active (A) and de-activated (D), the latter being sensitive to SH-modifying compounds. To investigate if the conserved cysteine-rich 11.5 kDa subunit of Neurospora crassa complex I is involved in this process, we subjected the corresponding genomic DNA to site-directed mutagenesis. The four cysteine residues of the subunit were separately...

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