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  • activation
  • This then activates phospholipase C which increases the intercellular amount of calcium through the activation of IP3 which is an intracellular molecule that acts as secondary messenger. (wikipedia.org)
  • site
  • When an agonist binds to the site, all present subunits undergo a conformational change and the channel is opened and a pore with a diameter of about 0.65 nm opens. (wikipedia.org)