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  • Title: Silencing UDP-glucose pyrophosphorylase gene in Phaeodactylum tricornutum affects carbon allocation.
    Author: Zhu BH, Shi HP, Yang GP, Lv NN, Yang M, Pan KH.
    Journal: N Biotechnol; 2016 Jan 25; 33(1):237-44. PubMed ID: 26162893.
    Abstract:
    The effects of the suppression of UDP-glucose pyrophosphorylase (UGPase) on chrysolaminaran biosynthesis and carbon allocation were investigated in Phaeodactylum tricornutum. The 69% decrease in UGPase activity was accompanied by a 4.89 fold reduction in Ugp transcript abundance. Inactivation of UGPase in P. tricornutum led to a significant decrease in chrysolaminaran content and an increase in lipid synthesis. These findings suggest that UGPase is a rate-limiting enzyme and may play an important role in chrysolaminarin biosynthesis and carbon allocation. Our results support a theoretical deduction that Ugp is a good candidate for improving lipid synthesis in diatoms.
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