Molecular Diversity of Terpene Synthases in the Liverwort Marchantia polymorpha
作者:Santosh Kumar、Chase Kempinski、Xun Zhuang、Ayla Norris、Sibongile Mafu、Jiachen Zi、Stephen A. Bell、S. Eric Nybo、Scott E. Kinison、Zuodong Jiang、Sheba Goklany、Kristin B. Linscott、Xinlu Chen、Qidong Jia、Shoshana D. Brown、John L. Bowman、Patricia C. Babbitt、Reuben J. Peters、Feng Chen、Joe Chappell
DOI:10.1105/tpc.16.00062
日期:——
found in vascular plants, pushing the date of the underlying gene duplication and neofunctionalization of the ancestral diterpene synthase gene family to >400 million years ago. By contrast, the mono- and sesquiterpene synthases represent a distinct class of enzymes, not related to previously described plant terpene synthases and only distantly so to microbial-type terpene synthases. The absence of a
Isolation, Characterization, and Mechanistic Studies of (−)-α-Gurjunene Synthase fromSolidago canadensis
作者:Claus O Schmidt、Harro J Bouwmeester、Nils Bülow、Wilfried A König
DOI:10.1006/abbi.1999.1122
日期:1999.4
(+)-gamma-gurjunene synthase activities copurified. In addition, the product ratio of the enzyme activity under several different assay conditions was always 91% (-)-alpha-gurjunene and 9% (+)-gamma-gurjunene. This suggests that the formation of these two structurally related products is catalyzed by one enzyme. For further confirmation, we carried out a number of mechanisticstudies with (-)-alpha-gurjunene
复合加拿大一枝黄花(Goldenrod)的叶片显示具有(-)-α-古尔烯烯合酶活性。该倍半萜烯可能是环氧化烯酮的前体,后者是一种在加拿大链球菌叶片中大量存在的倍半萜烯酮。(-)-α-Gurjunene合酶通过阴离子交换色谱法(在几种基质上),染料配体色谱法,羟基磷灰石色谱法和凝胶过滤纯化至表观均匀性(741倍)。凝胶过滤基质上的色谱表明其固有分子量为48 kDa,SDS-PAGE显示该酶由一个变性质量为60 kDa的亚基组成。在10 mM Mg2 +存在下,在pH 7.8下观察到其最大活性,底物法呢基二磷酸酯的KM值为5.5 microM。在一系列纯化步骤中,共纯化了(-)-α-古丁烯合酶和(+)-γ-古丁烯合酶活性。此外,在几种不同的测定条件下,酶活性的产物比率始终为91%(-)-α-古丁烯和9%(+)-γ-古丁烯。这表明这两种结构上相关的产物的形成是由一种酶催化的。为了进一步证实,我们
Treibs, Chemische Berichte, 1935, vol. 68, p. 1751,1755
作者:Treibs
DOI:——
日期:——
Morizur; Pallaud, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1960, vol. 251, p. 2043
作者:Morizur、Pallaud
DOI:——
日期:——
Treibs, Justus Liebigs Annalen der Chemie, 1952, vol. 576, p. 110,115