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. 2007 Dec 7;94(6):1954–1970. doi: 10.1529/biophysj.107.116202

TABLE 1.

Parameters used in the model

Symbol Description
R*n Activated rhodopsin in state n
R0 Deactivated rhodopsin
T Transducin
T* Activated transducin
PDE Phosphodiesterase
PDE* Activated PDE
Np Number of rhodopsin phosphorylation sites
λn Phosphorylation rate in state n
μn Arrestin binding rate in state n
kact(n) Transducin activation rate in state n
k3 PDE activation rate
k4 PDE* deactivation rate
Rτ Mean/SD ratio of rhodopsin lifetime
RPs Steady-state mean/SD ratio of PDE*
RP(t) Time-dependent mean/SD ratio of PDE*
Inline graphic Maximum number of PDE*