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. 1985 Nov;79(3):914–919. doi: 10.1104/pp.79.3.914

Nucleotide Sequence of ATPase Subunit 6 Gene of Maize Mitochondria 1

R E Dewey 1,2, Charles S Levings III 1,2, D H Timothy 1,2
PMCID: PMC1074995  PMID: 16664516

Abstract

The ATPase subunit 6, located in the inner mitochondrial membrane, is encoded by mitochondrial genomes in animals and fungi. We have isolated and characterized a mitochondrial gene, designated atp 6, that encodes the subunit 6 polypeptide of Zea mays. Nucleotide and predicted amino acid sequence comparisons have revealed a homology of 44.6 and 33.2% with the yeast ATPase subunit 6 gene and polypeptide, respectively. The predicted protein in maize contains 291 amino acids with a molecular weight of 31,721. Hydropathy profiles generated for the maize and yeast polypeptides are very similar and contain large hydrophobic domains, characteristic of membrane bound proteins. RNA transfer blot analysis indicates that atp 6 is actively transcribed. Interestingly, 122 base pairs of nucleotide sequence interior to atp 6 have extensive homology with the 5′ end of the cytochrome oxidase subunit II gene of maize mitochondria, suggesting recombination between the two genes.

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Selected References

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