Table VI.

List of parameters used to simulate “standard” conditions (for references, see Tables III and VII)

ParameterValueUnitDescription
c_SOD50μm Concentration of SOD in chloroplasts
c_APX70μm Concentration of APX in chloroplasts
c_MDAR14μm Concentration of MDAR in chloroplasts
c_DAR1.7μm Concentration of DAR in chloroplasts
c_GR1.7μm Concentration of GR in chlorplasts
Ko_SOD2,000μm −1s−1 Apparent rate constant of SOD and O2
Kcat_APX290s−1 Molecular APX activity (turnover no.)
Kcat_MDAR43s−1 Molecular MDAR activity (turnover no.)
Kcat_DAR142s−1 Molecular DAR activity (turnover no.)
Kcat_GR595s−1 Molecular GR activity (turnover no.)
kM_APX_ASC300μm Michaelis Menten constant of APX for ASC
kM_APX_H2O230μm Michaelis Menten constant of APX for H2O2
kM_MDAR_NADPH30μm Michaelis Menten constant of MDAR for NADPH
kM_MDAR_MDA0.9μm Michaelis Menten constant of MDAR for MDA
kM_DAR_GSH2,500μm Michaelis Menten constant of DAR for GSH
kM_DAR_DHA70μm Michaelis Menten constant of DAR for DHA
kM_GR_NADPH3μm Michaelis Menten constant of GR for NADPH
kM_GR_GSSG200μm Michaelis Menten constant of GR for GSSG
k_ASCO20.2μm −1s−1 Apparent rate constant of ASC and O2
k_GSHO20.7μm −1s−1 Apparent rate constant of GSH and O2
k_O2rO20.4μm −1s−1 Apparent rate constant of O2 and O2
k_MDAMDA0.3μm −1s−1 Apparent rate constant of MDA and MDA
k_DHAGSH0.1μm −1s−1 Apparent rate constant of GSH and DHA
k_ASCH2O22 × 10−6 μm −1s−1 Apparent rate constant of ASC and H2O2
relative_factor0.1NonePortion of O2 production of total photosynthetic electron flux