TABLE 1.
Ca2+-release and [3H]ryanodine-binding properties of wild-type and mutant RyR1s
Name | Caffeine-induced Ca2+ release | [3H]Ryanodine binding |
---|---|---|
Vector | − | − |
Wild-type RyR1 | +++ | +++ |
D4938N | +++ | +++ |
E4942Q | − | − |
D4945N | +++ | +++ |
E4948Q | +++ | + |
E4952Q | +++ | +++ |
D4953N | − | − |
E4955Q | +++ | +++ |
(+++) indicates caffeine-induced Ca2+ release and [3H]ryanodine binding activities comparable to wild-type RyR1; (+) indicates reduced activity; and (−) indicates no activity.