ATP

• Structure of ATP:

  • Adenine
  • Ribose (a pentose sugar)
  • Phosphate molecule
• ATP synthesis:

  • a reversible condensation reaction
  • An inorganic phosphate is added via a condensation reaction to ADP to make ATP
  • ADP + Pi + E —> ATP + H2O
• ATP hydrolysis:

  • a reversible hydrolysis reaction
  • ATP + H2O -> ADP + Pi + E
  • catalysed by ATP hydrolase
• Why ATP is a good storage molecule:

  • Immediate source of energy
  • Easily reformed
  • Hydrogen bonds are easily broken
• Where ATP is used:

  • metabolic processes
  • movement
  • active transport
  • secretion
  • activation of molecules