Enzymatic Characterization of Xylanase TgXyn2

GE Yuhang; CHEN Meixi; SUN Bo; WU Songna; WAN Qun

doi:10.13386/j.issn1002-0306.2021060100

GE Yuhang, CHEN Meixi, SUN Bo, et al. Enzymatic Characterization of Xylanase TgXyn2[J]. Science and Technology of Food Industry, 2022, 43(4): 138−144. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2021060100.

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Enzymatic Characterization of Xylanase TgXyn2

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Objectives: This study aimed to discover a acidic xylanase TgXyn2 with high enzymatic activities at low temperatures, which might have potential application in food industry. Method: TgXyn2 was heterologously expressed in E.coli with the expression vector pCold-TF. Results: The optimum reaction condition of TgXyn2 was 35 ℃ and pH5.0, respectively. Its K_m was 1.287 μmol L⁻¹ and V_max was 2.083 μmol min⁻¹ mg⁻¹. Homology modeling showed that TgXyn2 had two antiparallel β-sheets and an α-helix, which was typical for the GH11 family. Conclusions: TgXyn2 had good enzymatic activities, which has potential application in food industry.

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Enzymatic Characterization of Xylanase TgXyn2

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