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P2Y purinoceptor 12 Gαi Adenylate cyclase type 10 Plasma membrane Ca-ADPase ADP cAMP Ca+ Ca+ Magnesium cAMP Blood Vessel or Cell Damage Cangrelor has high affinity for the P2Y12 receptor to which it binds reversibly, preventing binding of ADP. Normally, ADP binds to P2Y12, activating the coupled Gi protein, inhibiting adenylate cyclase and leading to a shortage of cAMP. Cangrelor prevents the Gi protein from inactivating adenylate cyclase in the cell, leading to a buildup of cAMP, which activates the calcium efflux pump and prevents platelet activation. Calcium efflux is inactivated by lack of cAMP, inducing platelet activation and aggregation. Platelet Cytosol Extracellular Space Affected Organs Symptom Relief Blood Clot
Chloroplast Chloroplast P2RY12 GNAI1 ADCY10 Unknown Adenosine diphosphate cAMP Calcium Calcium Blood Vessel or Cell Damage