ATP5PO and neoplasm: Furthermore, in this same tumor type, we observed overexpression of the COX5A, COX5B, COX7A2, COX7C and COX4I1 proteins of the CIV; and underexpression of the ATP5F1D, ATP5L, ATP5H, ATP5F1A, ATP5I, ATP5O, ATP5F1B and ATP5F1 proteins of the CV.