ATP synthase subunit g, mitochondrial is an enzyme that in humans is encoded by the ATP5MGgene.[5][6][7]
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 g subunit of the F0 complex.[7]
The function of subunit G is currently unknown. There is no counterpart in chloroplast or bacterial F-ATPases identified so far.[8]
^Collinson IR, Runswick MJ, Buchanan SK, Fearnley IM, Skehel JM, van Raaij MJ, Griffiths DE, Walker JE (June 1994). "Fo membrane domain of ATP synthase from bovine heart mitochondria: purification, subunit composition, and reconstitution with F1-ATPase". Biochemistry. 33 (25): 7971–8. doi:10.1021/bi00191a026. PMID8011660.
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. S2CID218895820.
Elston T, Wang H, Oster G (1998). "Energy transduction in ATP synthase". Nature. 391 (6666): 510–3. doi:10.1038/35185. PMID9461222. S2CID4406161.
Wang H, Oster G (1998). "Energy transduction in the F1 motor of ATP synthase". Nature. 396 (6708): 279–82. doi:10.1038/24409. PMID9834036. S2CID4424498.