Ptac2S Ptac2S limits cancer cell (Skov-3) proliferation by reducing the efficiency of the citric acid cycle and induces changes in cell membranes in a shorter period of time (6h) compared to cisplatin (24h). Additionally, Ptac2S may inhibit lactate dehydrogenase. 1H-NMR CPMG1H,1H-COSY1H,13C-HSQC1H,13C-HMBC [145]