Miao Tian, Zhiyuan Wang, Junying Fu, Pengmei Lv, Cuiyi Liang, Zhibing Li, LingMei Yang, Tao Liu, Ming Li, Wen Luo
Enzyme and microbial technology 2022 OctThe construction of methanol-resistant lipases with high catalytic activity is world-shattering for biodiesel production. A semi-rational method has been constructed to enhance the properties of Rhizomucor miehei lipase with propeptide (ProRML) by introducing N-glycosylation sites in the Loop structure. The enzyme activities of the mutants N288 (1448.89 ± 68.64 U/mg) and N142 (1073.68 ± 33.87 U/mg) increased to 56.09 and 41.56 times relative to that of wild type ProRML (WT, 25.83 ± 0.73 U/mg), respectively. After incubation in 50 % methanol for 2.5 h, the residual activities of N314 and N174-1 were 95 % and 85%, which were higher than the WT (27 %). Additionally, the biodiesel yield of all mutants was increased after a one-time addition of methanol for 24 h. Among them, N288 increased the quantity of biodiesel from colza oil from 9.49 % to 88 %, and N314 increased the amount of biodiesel from waste soybean oil from 8.44% to 70%. This study provides an effective method to enhance the properties of lipase and improve its application potential in biodiesel production. Copyright © 2022 Elsevier Inc. All rights reserved.
Miao Tian, Zhiyuan Wang, Junying Fu, Pengmei Lv, Cuiyi Liang, Zhibing Li, LingMei Yang, Tao Liu, Ming Li, Wen Luo. N-glycosylation as an effective strategy to enhance characteristics of Rhizomucor miehei lipase for biodiesel production. Enzyme and microbial technology. 2022 Oct;160:110072
PMID: 35689964
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