calcium channel activity
Enables the energy-independent facilitated diffusion of a calcium ion through a transmembrane aqueous pore or channel.
GO:0005261
monoatomic cation channel activity
is_a
GO:0015085
calcium ion transmembrane transporter activity
is_a
SPCC576.04 SPAC1F7.03 SPAC1F5.08c SPCC1183.11 SPAC6F6.01 SPCC1322.03 SPAC2C4.17c