不动杆菌属对标记木质素和藜芦醇-β-愈创木基醚的降解作用
Degradation of labelled lignins and veratrylglycerol-beta-guaiacyl ether by Acinetobacter sp.
作者信息
Vasudevan N, Mahadevan A
机构信息
Centre for Advanced Study in Botany, University of Madras, India.
出版信息
Ital J Biochem. 1990 Sep-Oct;39(5):285-93.
Acinetobacter sp. evolved 14CO2 from 14C-(ring)DHP lignin and 14C-teakwood lignin. Veratrylglycerol-beta-guaiacyl ether, a lignin model compound with beta-o-4 linkage was cleaved by Acinetobacter sp. Veratrylglycerol-beta-guaiacyl ether into 2(o-methoxyphenoxy) ethanol and veratrylalcohol 2(o-methoxyphenoxy) ethanol was degraded to guaiacol and then to catechol whereas veratrylalcohol was converted to veratraldehyde, veratric acid, vanillic acid, protocatechuic acid and catechol. Both catechol 1,2-dioxygenase and protocatechuate 3,4-dioxygenase were detected in veratrylglycerol-beta-guaiacyl ether grown cultures.
不动杆菌属细菌能从14C-（环）二氢愈创木脂木质素和14C-柚木木质素中释放出14CO2。具有β-O-4键的木质素模型化合物藜芦醇-β-愈创木基醚可被不动杆菌属细菌裂解。藜芦醇-β-愈创木基醚裂解为2-（邻甲氧基苯氧基）乙醇和藜芦醇，2-（邻甲氧基苯氧基）乙醇降解为愈创木酚，然后再降解为儿茶酚，而藜芦醇则转化为藜芦醛、藜芦酸、香草酸、原儿茶酸和儿茶酚。在以藜芦醇-β-愈创木基醚为生长底物的培养物中检测到了儿茶酚1,2-双加氧酶和原儿茶酸3,4-双加氧酶。
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