ATPase
ATPase Any of a group of enzymes that bring about the hydrolysis of ATP. This results in the cleavage of either one phosphate group, with the formation of ADP and inorganic phosphate (Pi), or of two phosphate groups, with the formation of AMP and pyrophosphate (PPi); the second reaction yields twice as much energy as the first. ATPase activity is associated with many energy-consuming processes; for example, in muscle contraction it is associated with myosin when activated by actin. One form of ATPase, ATP synthetase, can catalyse the synthesis of ATP, for example in the mitochondrial electron transport chain (see also chemiosmotic theory).
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Phosphorylation , phosphorylation, chemical process in which a phosphate group is added to an organic molecule. In living cells phosphorylation is associated with resp… Atp , ATP (adenosine triphosphate) A nucleotide that is of fundamental importance as a carrier of chemical energy in all living organisms. It consists of a… Atp Synthesis , chemiosmotic theory A theory postulated by the British biochemist Peter Mitchell (1920–92) to explain the formation of ATP in the mitochondrial elect… Photophosphorylation , photophosphorylation The formation of ATP from ADP and inorganic phosphate using light energy in photosynthesis (compare oxidative phosphorylation).… Activation Energy , activation energy Symbol Ea. The minimum energy required for a chemical reaction to take place. In a reaction, the reactant molecules come together a… Adenosine Triphosphate , Adenosine triphosphate (ATP) has been described as the body’s energy currency—energy-producing metabolic reactions store their energy in the form of…
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ATPase