pfam04627: ATP-synt_Eps (This model is not part of the current CDD release)
Mitochondrial ATP synthase epsilon chain
This family constitutes the mitochondrial ATP synthase epsilon subunit. This is not to be confused with the bacterial epsilon subunit, which is homologous to the mitochondrial delta subunit (pfam00401 and pfam02823) The epsilon subunit is located in the extrinsic membrane section F1, which is the catalytic site of ATP synthesis. The epsilon subunit was not well ordered in the crystal structure of bovine F1, but it is known to be located in the stalk region of F1. E subunit is thought to be involved in the regulation of ATP synthase, since a null mutation increased oligomycin sensitivity and decreased inhibition by inhibitor protein IF1.
Jiyao W et al.(2023). "The conserved domain database in 2023.",