From Gene Towards Selective Biomass Valorization: Bacterial β-Etherases with Catalytic Activity on Lignin-Like Polymers
作者:Pere Picart、Christoph Müller、Jakob Mottweiler、Lotte Wiermans、Carsten Bolm、Pablo Domínguez de María、Anett Schallmey
DOI:10.1002/cssc.201402465
日期:2014.11
investigated together with known β‐etherases in the conversion of various lignin and non‐lignin‐type model compounds. The resulting activities revealed the significant influence of the substituents at the phenyl ring adjacent to the ether bond. Finally, β‐etherase activity on polymeric substrates, measured by using a fluorescently labeled synthetic lignin, was also proven; this underlined the applicability
选择性裂解木质素中存在的β- O -4芳基醚键的微生物β-醚酶为木质素增值中的未来应用提供了广阔的前景。但是,到目前为止,报道的成员很少,对这些酶知之甚少。通过数据库挖掘方法,鉴定了在大肠杆菌中重组产生的四种新型细菌β-醚酶,并与已知的β-醚酶一起研究了各种木质素和非木质素类型模型化合物的转化。所产生的活性揭示了与醚键相邻的苯环上的取代基的显着影响。最后,还证明了通过使用荧光标记的合成木质素测量的在聚合物底物上的β-醚酶活性;这强调了酶用于将木质素转化为可再生化学物质的适用性。