ATP synthase subunit e, mitochondrial is an enzyme that in humans is encoded by the ATP5MEgene.[1][2]
Mitochondrial ATP synthase catalyzes ATP synthesis, utilizing an electrochemical gradient of protons across the inner membrane during oxidative phosphorylation. It is composed of two linked multi-subunit complexes: the soluble catalytic core, F1, and the membrane-spanning component, Fo, which comprises the proton channel. The F1 complex consists of 5 different subunits (alpha, beta, gamma, delta, and epsilon) assembled in a ratio of 3 alpha, 3 beta, and a single representative of the other 3. The Fo seems to have nine subunits (a, b, c, d, e, f, g, F6 and 8). This gene encodes the e subunit of the Fo complex.[2]
In yeast, the FO complex E subunit appears to play an important role in supporting F-ATPase dimerisation. This subunit is anchored to the inner mitochondrial membrane via its N-terminal region, which is involved in stabilising subunits G and K of the FO complex. The C-terminal region of subunit E is hydrophilic, protruding into the intermembrane space where it can also help stabilise the F-ATPase dimer complex.[3]
References
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Leyva JA, Bianchet MA, Amzel LM (2003). "Understanding ATP synthesis: structure and mechanism of the F1-ATPase (Review)". Mol. Membr. Biol. 20 (1): 27–33. doi:10.1080/0968768031000066532. PMID12745923.
Elston T, Wang H, Oster G (1998). "Energy transduction in ATP synthase". Nature. 391 (6666): 510–3. doi:10.1038/35185. PMID9461222.
Wang H, Oster G (1998). "Energy transduction in the F1 motor of ATP synthase". Nature. 396 (6708): 279–82. doi:10.1038/24409. PMID9834036.
Gubin AN, Njoroge JM, Bouffard GG, Miller JL (1999). "Gene expression in proliferating human erythroid cells". Genomics. 59 (2): 168–77. doi:10.1006/geno.1999.5855. PMID10409428.
Ying H, Yu Y, Xu Y (2002). "Antisense of ATP synthase subunit e inhibits the growth of human hepatocellular carcinoma cells". Oncol. Res. 12 (11–12): 485–90. PMID11939412.
Papathanassiu AE, MacDonald NJ, Bencsura A, Vu HA (2006). "F1F0-ATP synthase functions as a co-chaperone of Hsp90-substrate protein complexes". Biochem. Biophys. Res. Commun. 345 (1): 419–29. doi:10.1016/j.bbrc.2006.04.104. PMID16682002.
