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    The yeast vacuole is functionally corresponding to vacuoles in eukaryote cells, it consists of a fusion protein that assists in the fusion of vacuoles and plays an important role in many processes. In addition, chemicals such as NH4Cl can reduce the size of vacuoles but as a side effect that also inhibits vacuoles making them inactive. In this study, to develop pre-treatments for extending the life of cut flowers, we constructed recombinant yeast using the fusion protein YPT7 and confirmed the activity of down-sized vacuoles. All the vacuoles of the recombinant yeast except vacuoles from recombinant yeast (MBTL-MYH-3) were found to be small vacuoles than mock (MBTL-MYH-0) and YPT7 overexpression model (MBTL-MYH-1). To confirm their activity, we conducted a test for antimicrobial activity. The results showed the other vacuoles of recombinant yeast had lower antimicrobial activity than the mock control, most of them showed about 60 % to 80 % of the antimicrobial activity. However, MBTL-MYH-3, whose vacuole did not change its size, showed antimicrobial activity lower than 40 %. Therefore, the cut flowers are better able to absorb smaller vacuoles after using the fusion protein YPT7. We expect that absorbing vacuoles more effective to senescence of cut flower than vacuolar enzymes. Copyright © 2020 Elsevier Inc. All rights reserved.


    Mi Young Heo, Wooil Choi, Younga Kim, Woo-Ri Shin, Ra-Mi Park, Yang-Hoon Kim, Jiho Min. YPT7's deletion regulates yeast vacuoles' activity. Enzyme and microbial technology. 2021 Feb;143:109699

    PMID: 33375967

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