作者:Philipp Baer、Patrick Rabe、Katrin Fischer、Christian A. Citron、Tim A. Klapschinski、Michael Groll、Jeroen S. Dickschat
DOI:10.1002/anie.201403648
日期:2014.7.14
plants, including epi‐isozizaene synthase (3KB9), aristolochene synthase (4KUX), bornyl diphosphate synthase (1N20), limonene synthase (2ONG), 5‐epi‐aristolochene synthase (5EAT), and taxa‐4(5),11(12)‐diene synthase (3P5R). An elaborate structure‐based mutagenesis in combination with analysis of the distinct product spectra confirmed the mechanistic models of carbocation formation and stabilization in
我们介绍了链霉菌链霉菌的selina-4(15),7(11)-二烯合酶(SdS)的晶体学和功能数据,其开放和闭合(配体结合)构象。我们可以通过阐明底物结合后G1 / 2螺旋断裂基序的重排来确定诱导拟合的机制。这种重排突出显示了一种新型的效应三联体,其包括焦磷酸盐传感器Arg178,接头Asp181和效应子Gly182-O。该结构基序在细菌,真菌和植物的I类萜烯环化酶中严格保守,包括表异异氮烯合酶(3KB9),马兜铃属合酶(4KUX),冰片烯基二磷酸合酶(1N20),柠檬烯合酶(2ONG),5表位-aristolochene合酶(5EAT)和分类单元4(5),11(12)-二烯合酶(3P5R)。