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Absorption spectra of PRs in relation to light attenuation patterns in different marine environments. Top panel, spectra of green-tuned PR (GPR) and blue-tuned PR (BPR) collected from different depths at the Hawaii Ocean time series (HOT) station ALOHA. Absorption spectra were obtained following heterologous expression in E. coli. Middle and lower panels, typical light attenuation in open ocean and coastal environments, respectively. (Inspired by reference 169.)
