Template:SUIT text D055

SUIT-006 MgG mt D055 is a protocol to investigate the O₂ flux and mitochondrial ATP production using the fluorescent dye Magnesium Green. In this protocol, the NADH Electron transfer-pathway state can be analysed in mitochondrial preparations such as isolated mitochondria, tissue homogenates and permeabilized cells (already permeabilized when they are added to the chamber). Addition of the substrates pyruvate & malate (PM) to the mitochondrial preparation leads to LEAK state, and further addition of ADP induces the OXPHOS state, in which respiration is coupled to ATP production. After ADP addition, the signal from MgG gradually decreases, reflecting the ANT-mediated exchange of ADP for ATP, the later one having higher affinity for Mg²⁺. This exchange is stopped by addition of the ANT inhibitor carboxyatractyloside (Cat), which leads to LEAK state. With the addition of uncoupler, the ET state can also be assessed in this protocol.