The T296V Mutant of Amorpha-4,11-diene Synthase Is Defective in Allylic Diphosphate Isomerization but Retains the Ability To Cyclize the Intermediate (3R)-Nerolidyl Diphosphate to Amorpha-4,11-diene.
The T296V Mutant of Amorpha-4,11-diene Synthase Is Defective in Allylic Diphosphate Isomerization but Retains the Ability To Cyclize the Intermediate (3R)-Nerolidyl Diphosphate to Amorpha-4,11-diene.
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Amorpha-4,11-二烯合酶的 T296V 突变体在烯丙基二磷酸异构化方面存在缺陷,但保留了将中间体 (3R)-橙花烷基二磷酸环化为 Amorpha-4,11-二烯的能力。
DOI:
10.1021/acs.biochem.6b01004
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发表时间:
2016-12-06
期刊:
影响因子:
2.9
通讯作者:
Cane, David E.
中科院分区:
文献类型:
--
作者:
Li, Zhenqiu;Gao, Ruiping;Hao, Qinggang;Zhao, Huifang;Cheng, Longbin;He, Fang;Liu, Li;Liu, Xiuhua;Chou, Wayne K. W.;Zhu, Huajie;Cane, David E.
The T296V mutant of amorpha-4, 11-diene synthase catalyzes the abortive conversion of the natural substrate (E,E)-farnesyl diphosphate mainly into the acyclic product (E)-β-farnesene (88%) instead of the natural bicyclic sesquiterpene amorphadiene (7%). Incubation of the T296V mutant with (3R,6E)-nerolidyl diphosphate resulted in cyclization to amorphadiene. Analysis of additional mutants of amino acid residue 296 and in vitro assays with the intermediate analogue (2Z,6E)-farnesyl diphosphate as well as (3S,6E)-nerolidyl diphosphate demonstrated that the T296V mutant can no longer catalyze the allylic rearrangement of farnesyl diphosphate to the normal intermediate (3R,6E)-nerolidyl diphosphate, while retaining the ability to cyclize (3R,6E)-nerolidyl diphosphate to amorphadiene. The T296A mutant predominantly retained amorphadiene synthase activity, indicating that neither the hydroxyl nor the methyl group of the Thr296 side chain is required for cyclase activity.
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影响因子:
2.9
作者:
Li R;Chou WK;Himmelberger JA;Litwin KM;Harris GG;Cane DE;Christianson DW
通讯作者:
Christianson DW
影响因子:
4
作者:
Noel, Joseph P.;Dellas, Nikki;Faraldos, Juan A.;Zhao, Marylin;Hess, B. Andes, Jr.;Smentek, Lidia;Coates, Robert M.;O'Maille, Paul E.
通讯作者:
O'Maille, Paul E.
影响因子:
1.9
作者:
Vardakou, Maria;Salmon, Melissa;Faraldos, Juan A;O'Maille, Paul E
通讯作者:
O'Maille, Paul E
影响因子:
2.9
作者:
Rynkiewicz, MJ;Cane, DE;Christianson, DW
通讯作者:
Christianson, DW
影响因子:
2.1
作者:
KIGOSHI, H;OJIKA, M;YAMADA, K
通讯作者:
YAMADA, K