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Biochem J. Apr 1, 2000; 347(Pt 1): 17–21.
PMCID: PMC1220925

Cloning, characterization and mapping of the human ATP5E gene, identification of pseudogene ATP5EP1, and definition of the ATP5E motif.

Abstract

A cDNA encoding the epsilon subunit of human ATP synthase, ATP5E, was isolated from heart, skeletal muscle and spleen cDNA libraries respectively. Its genome structure was characterized as comprising three exons and two introns within a stretch of 5 kb, according to the genomic sequence AL109840. The gene was mapped to human chromosome 20q13.3 between marker D20S173 and 20qter using the radiation hybrid GB4 panel. Northern blot analysis showed that the ATP5E gene was expressed as a single 0.6 kb transcript in all 16 human tissues tested, with a high level present in heart and skeletal muscle. A new conserved motif composed of 24 residues, termed the ATP5E motif [W(R/K)X(5)YX(2)(Y/F)X(3)(C/A)X(4)RX(3)K], was defined on the basis of sequences of ATP synthase epsilon subunits from ten different organisms. In addition, a pseudogene ATP5EP1 was also identified on the basis of genomic sequence AC004066, localized on human chromosome 4q25. By analysing these results combined with the Southern blot patterns of human DNA hybridized with bovine ATP5E cDNA reported previously [Vinas, Powell, Runswick, Iacobazzi and Walker (1990) Biochem. J. 265, 321-326], we provide evidence of yet further homologous sequences (either gene or pseudogene) of ATP5E, in addition to ATP5E and ATP5EP1 in the human genome.

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Selected References

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