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Thermal Stability of α-Phycoerythrocyanin
2015
Procedia Chemistry
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The -subunit of the phycobiliprotein, phycoerythrocyanin (α-PEC), from Mastigocladus laminosus shows photoreversible photochromism that is based on the Z ↔ E isomerization of the phycoviolobilin (PVB) chromophore. Thermal stability of the photochemistry and chromoprotein secondary structure have been studied by absorption and circular dichroism (CD) spectroscopy. Both photoisomers are stable and photoconvertible up to ~ 70 °C. At T > 75 °C, photochemistry ceases because the E-state reverts
doi:10.1016/j.proche.2015.03.020
fatcat:ln7pqsokg5gvtc4ialkmwrguie