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FEBS Lett. 1991 Jan 14;278(1):75-8.

Relationship between a subunit of NADH dehydrogenase (complex I) and a protein family including subunits of cytochrome reductase and processing protease of mitochondria.

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1
Institut für Biochemie, Universität Düsseldorf, Germany.

Abstract

The primary structure of a 40 kDa subunit of the respiratory chain NADH:ubiquinone reductase from Neurospora crassa was determined by sequencing cDNA, genomic DNA and the N-terminus of the mature protein. The gene which is interrupted by 7 introns encodes a preprotein consisting of 375 amino acids with a 26 amino acid long presequence typical for a mitochondrial targeting signal. The sequence of the mature subunit shows conspicuous similarities to the recently [(1989) Nature 339, 147-149] discovered protein family which includes subunits I and II of the ubiquinol:cytochrome c reductase, and the processing proteins, matrix processing peptidase and processing enhancing protein, of mitochondria. The possible role of the subunit is discussed.

PMID:
1825202
[Indexed for MEDLINE]
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