All life as we know it uses the exact same energy-carrying molecule as a kind of 'universal cellular fuel'.
reportsATP is an organic molecule, charged up by photosynthesis or by cellular respiration and used in every single cell. Every day, weIn both the above systems, a phosphate molecule is added to ADP through a reaction called phosphorylation – resulting in ATP.
"Our results suggest… that the emergence of ATP as the universal energy currency of the cell was not the result of a 'frozen accident'," but arose from unique interactions of phosphorylation molecules,The fact that ATP is used by all living things suggests it has been around since life's very beginning and even before, during the prebiotic conditions that preceded all us animate matter.
Pinna and team suspect some other molecules must have been involved initially in the complicated phosphorylation process. So they took a close look at another phosphorylating molecule, AcP, that's still used by bacteria and archaea in their metabolism of chemicals, including phosphate and thioester – a chemical thought to have been abundantIn the presence of iron ions , AcP can phosphorylate ADP to ATP in water.
Furthermore, the experiments suggest that the creation of prebiotic ATP was most likely to take place in freshwater, where photochemical reactions and volcanic eruptions, for instance, could provide the right mix of ingredients, the team explains.
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