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  • Title: The delta-subunit of ATP synthase from bovine heart mitochondria. Complementary DNA sequence of its import precursor cloned with the aid of the polymerase chain reaction.
    Author: Runswick MJ, Medd SM, Walker JE.
    Journal: Biochem J; 1990 Mar 01; 266(2):421-6. PubMed ID: 2138455.
    Abstract:
    The delta-subunit of ATP synthase from bovine heart mitochondria is part of the extrinsic membrane domain, F1-ATPase. The mature protein is 146 amino acids in length and its function is obscure. It is encoded by a nuclear gene and is imported into the organelle. Two mixtures of oligonucleotides 17 bases long, designed on the basis of the known protein sequence, have been synthesized and employed as primers on bovine cDNA in the polymerase chain reaction. By this means a segment of bovine cDNA encoding part of the delta-subunit has been amplified, and this DNA segment has been employed to identify related cDNA clones in a library. These clones encode the mitochondrial import precursor of the delta-subunit; the protein sequence of the mature protein deduced from it is exactly the same as that determined earlier by direct sequence analysis. The clones have also been used to show that both the bovine and human genomes seem to contain a single gene for the delta-subunit.
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