Chlorophyll a is converted into chlorophyll b by chlorophyllide a oxygenase (CAO) in chlorophyll recycling (Tanaka and Tanaka, 2007). During chlorophyll degradation, the first committed enzyme is magnesium dechelatase (STAY GREEN, SGR), which removes the central Mg2+ from chlorophyll a. ...
Johnson, D., Svec, W. & Wasielewski, M. Solvent polarity dependent photophysics of a fixed-distance, symmetric chlorophyll dimer. A model of the special pair in photosynthetic reaction centers. Isr. J. Chem. 28, 193-203 (1988).Johnson, DG, Svec, WA, Wasielewski, MR (1988) Solvent ...
In this study, the contents of chlorophyll a, chlorophyll b, and total chlorophyll in sunflower plants under Cd stress were notably decreased compared to the CK group (Fig. 2), suggesting that Cd stress impedes chlorophyll synthesis in sunflowers. This result is similar with Kaya et al. [41...
and vibronic coupling assignments of the Qx origin from the MCD spectra22 (relative DDA/n vs. Dn in 1000 cm21) of Chl-a in ether (magenta) and pyridine (brown); nvc is the unperturbed frequency of the coupling vibration in the Qy state while a is the coupling between this vibration an...
Per is a heptene-based chromophore that features a C37, instead of the standard C40 carotenoid framework, as well as an unusual pairing of allenic and γ-butenolide moieties, as seen in Figure 1b, which significantly shapes the photophysical response of the polyene chain to the polarity, pro...