1. Analysis of light spectra.
Analysis of light spectra. (A) Activity and irradiance spectra. The top graph displays activity spectra for photon‐utilizing reactions included in iRC1080. The abbreviated reactions are defined as follows: VITD3, vitamin D3 synthesis; OPSIN, rhodopsin photoisomerase; PCHLD, both protochlorophyllide photoreductase and divinylprotochlorophyllide photoreductase; PSI, photosystem I; PSII, photosystem II. The y axis for the activity spectra is the fraction of maximum‐measured activity with respect to each noted reaction. Four of the eleven sample irradiance spectra (Supplementary Figure S3) are depicted with y axes set as the percentage of total visible photon flux at each wavelength (x axis). Effective spectral bandwidths are denoted by vertical dashed lines color coded to match the activity spectra for each reaction. (B) Prism reaction derivation. The photon flux from wavelengths a to b is normalized by the total visible photon flux from 380 to 750 nm to yield the effective spectral bandwidth coefficient C. The coefficients for each range are compiled into a single prism reaction for a given light source, representing the composition of emitted light as defined by photon‐utilizing metabolic reactions. Equation variables are defined at top.
Roger L Chang et al. Mol Syst Biol 2011;7:518
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