Table 1.

Cys-loop aromatic box residuesa

ReceptorLoop ALoop BLoop CLoop D
nAChRY93W149Y190Y198W55
5-HT3E129bW183F226Y234W90
MOD-1C120Y180Y221W226F83
GABACF138Y198Y241Y247Y102
GABAAY97Y157F200Y205F65