Reevaluating the mechanism of excitation energy regulation in iron-starved cyanobacteria

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• 作者：Hui-Yuan S. Chen^a ; Michelle Liberton^b ; Himadri B. Pakrasi^a ; ^b ; Dariusz M. Niedzwiedzki^c ; ^{niedzwiedzki@wustl.edu}
• 关键词：IsiA ; Carotenoids ; Excitation quenching ; Cyanobacteria ; Transient absorption ; Chlorophyll
• 刊名：Biochimica et Biophysica Acta (BBA) - Bioenergetics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：1858
• 期：3
• 页码：249-258
• 全文大小：1773 K
• 卷排序：1858

文摘

The excitation quenching mechanism in IsiA, a chlorophyll a-binding protein from cyanobacteria has been reevaluated. Carotenoids do not support chlorophyll a in light harvesting in this protein. Chlorophyll excitation quenching mechanism is not mediated by carotenoids. Results suggest that chlorophyll excitation quenching is regulated via chlorophyll a-protein interactions.