The following receptor has an intrinsic ion channel
GABA -BDZ receptor is an ion channel receptor , has an intrinsic Cl ion channel opening when a agonist binds to it and causes increase in frequency of channel opening and causes hyperpolarization. KDT 6/ e pg 42
Histamine H1 receptor
Histamine H2 receptor
Adrenergic alfa receptor
GABA-benzodiazepine receptor
All India exam