146. Cain BD, Simoni RD, Proton translocation by the F1Fo ATPase of Escherichia coli. Mutagenic analysis of the a subunit. JBiol Chem 1989, 264(6):3292-3300. 147. Eya S, Maeda M, Futai M, Role of the carboxyl terminal region of H(+)-ATPase (FOFl1) a subunit from Escherichia coli. Arch Biochem Biophys 1991, 284(1):71- 77. 148. Schneider E, Altendorf K, All three subunits are required for the reconstitution of an active proton channel (FO) of Escherichia coli ATP synthase (Fl1FO). Embo J 1985, 4(2):515-518. 149. von Meyenburg K, Jorgensen BB, Michelsen O, Sorensen L, McCarthy JE, Proton conduction by subunit a of the membrane-bound ATP synthase of Escherichia coli revealed after induced overproduction. Embo J 1985, 4(9):2357- 2363. 150. Hermolin J, Fillingame RH, Assembly of Fo sector of Escherichia coli H+ ATP synthase. Interdependence of subunit insertion into the membrane. JBiol Chem 1995, 270(6):2815-2817. 151. Akiyama Y, Kihara A, Ito K, Subunit a of proton ATPase FO sector is a substrate of the FtsH protease in Escherichia coli. FEBS Lett 1996, 3 99(1-2):26-28. 152. Vik SB, Dao NN, Prediction of transmembrane topology of FO proteins from Escherichia coli FlFO ATP synthase using variational and hydrophobic moment analyses. Biochim Biophys Acta 1992, 1 140(2): 199-207. 153. Wang S, Vik SB, Single amino acid insertions probe the alpha subunit of the Escherichia coli FlFO-ATP synthase. JBiol Chem 1994, 269(4):3095-3099. 154. Valiyaveetil FI, Fillingame RH, Transmembrane topography of subunit a in the Escherichia coli F1Fo ATP synthase. JBiol Chem 1998, 273(26): 16241-16247. 155. Long JC, Wang S, Vik SB, Membrane topology of subunit a of the F1Fo ATP synthase as determined by labeling of unique cysteine residues. JBiol Chem 1998, 273(26): 1623 5-16240. 156. Wada T, Long JC, Zhang D, Vik SB, A novel labeling approach supports the five- transmembrane model of subunit a of the Escherichia coli ATP synthase. JBiol Chem 1999, 274(24):17353-17357. 157. Jiang W, Fillingame RH, Interacting helical faces of subunits a and c in the F1Fo ATP synthase ofEscherichia coli defined by disulfide cross-linking. Proc Natl Acad'Sci USA 1998, 95(12):6607-6612. 158. Patterson AR, Wada T, Vik SB, His(15) of subunit a of the Escherichia coli ATP synthase is important for the structure or assembly of the membrane sector F(o). Arch Biochem Biophys 1999, 368(1): 193-197.