Roles of Two Phytoene Synthases and Orange Protein in Carotenoid Metabolism of the β-Carotene-Accumulating <i>Dunaliella salina</i>
Ming‐Hua Liang, Shan‐Rong Xie, Jv-Liang Dai, Hao‐Hong Chen, Jian‐Guo Jiang
Abstract
Phytoene synthase (PSY) as the key rate-limiting enzyme in carotenoid metabolism can be regulated by various regulators and factors. We found that DsPSY1 played a dominant role in carotenogenesis in the β-carotene-accumulating Dunaliella salina , and two amino acid residues critical in the substrate binding were associated with the functional variance between DsPSY1 and DsPSY2.
Topics & Concepts
Dunaliella salinaPhytoeneCarotenoidOrange (colour)BiologyDunaliellaPhytoene desaturaseMetabolismBiochemistryBotanyChemistryFood scienceGeneBiosynthesisAlgaeLycopeneAlgal biology and biofuel productionAntioxidant Activity and Oxidative StressPhotosynthetic Processes and Mechanisms