作者:David Conradt、Bianca Hermann、Stefan Gerhardt、Oliver Einsle、Michael Müller
DOI:10.1002/anie.201607494
日期:2016.12.12
Phloroglucinol reductases (PGRs) are involved in anaerobic degradation in bacteria, in which they catalyze the dearomatization of phloroglucinol into dihydrophloroglucinol. We identified three PGRs, from different bacterial species, that are members of the family of NAD(P)H‐dependent short‐chain dehydrogenases/reductases (SDRs). In addition to catalyzing the reduction of the physiological substrate
间苯三酚还原酶(PGR)参与细菌的厌氧降解,其中它们催化间苯三酚脱芳香化为二氢间苯三酚。我们鉴定了来自不同细菌物种的三个PGR,它们是NAD(P)H依赖的短链脱氢酶/还原酶(SDR)家族的成员。除了催化还原生理底物外,这三种酶还显示出对2,4,6-三羟基苯甲醛,2,4,6-三羟基苯乙酮和2,4,6-三羟基苯甲酸甲酯的活性。PGRcl的结构解析以及与已知SDR的比较显示出高度的保守性。几个氨基酸位置被鉴定为在PGR亚家族中是保守的,并且可能与底物分化有关。