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. 2022 Mar 21;154(9):e202112994. doi: 10.1085/jgp.202112994

Table A3.

Calculation of apparent rate constants for two-state model of Ca2+ pumps

α1+=k2+NATPNCai2NATP(NCai)2+NHi(1+NATP(1+NH1+NCai2)) NATP=[ATP]/Kd,ATP
NCai=Cai/Kd,Cai
NHi=[H+]i/Kd,Hi
NH1=[H+]1Kd,H1
α2+=k3+NHSRNHSR(1+NH)+NH(1+NCaSR2) NHSR=[H+]SR/Kd,HSR
NCaSR=CaSR/Kd,CaSR
NH=[H+]/Kd,H
α1=k2[ADP]NCaSR2NHNHSR(1+NH)+NH(1+NCaSR2) Kd,ATP=k1k1+=k2+k3+Kd,CaSR2Kd,HiKd,Hk2k3Kd,Cai2Kd,HSReΔGATP/RT
α2=k3[Pi]NHiNATPNCai2+NHi(1+NATP(1+NH1+NCai2))