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Characterization of Esterase Capable of Hydrolyzing Bis(2-hydroxyethyl) Terephthalate

J Agric Food Chem. 2024-05; 
Sizhong Feng, Mengke Xue, Fang Xie, Hongyang Zhao, Yemin Xue
Products/Services Used Details Operation
Gene Synthesis … , China). T. maritima genomic DNA was generated in our laboratory. … from GenScript (Nanjing, China). The pET-20b-BhrPETase plasmid was generated by Sangon (Shanghai, China). … Get A Quote

摘要

The gene-encoding carboxylesterase () from the hyperthermophilic bacterium () was cloned and expressed in Top10 and BL21 (DE3). Recombinant TM1022 showed the best activity at pH 8.0 and 85 °C and retained 57% activity after 8 h cultivation at 90 °C. TM1022 exhibited good stability at pH 6.0-9.0, maintaining 53% activity after incubation at pH 10.0 and 37 °C for 6 h. The esterase TM1022 exhibited the optimum thermo-alkali stability and / (598.57 ± 19.97 smM) for N-C4. TM1022 hydrolyzed poly(ethylene terephthalate) (PET) degradation intermediates, such as bis(2-hydroxyethyl) terephthalate (BHET) and mono(2-hydroxyethyl) terephthalate (MHET). The , , and / values for BHET were 0.82 ± 0.01 mM, 2.20 ± 0.02 s... More

關鍵詞

PET, Thermotoga maritima, alpha/beta-hydrolase, bis (2-hydroxyethyl) terephthalate, carboxylesterase
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