Evidence map›Paper›PMID 26449416›Full record

ArticlePlant cell reports2015

Identification of geranylgeranyl diphosphate synthase genes from Tripterygium wilfordii.

Meng Zhang, Ping Su, Yong-Jin Zhou, Xiu-Juan Wang, Yu-Jun Zhao, Yu-Jia Liu, Yu-Ru Tong, Tian-Yuan Hu, Lu-Qi Huang, Wei Gao

Abstract read
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In one paragraph

Article in Plant cell reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.5field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 35 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 3 countries.

Meng ZhangSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China. zhangmeng8846@163.com.
Ping SuSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
Yong-Jin ZhouDepartment of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, 41296, Göteborg, Sweden.
Xiu-Juan WangSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China. wxj0517@sina.com.
Yu-Jun ZhaoNational Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
Yu-Jia LiuSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
Yu-Ru TongSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
Tian-Yuan HuSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
Lu-Qi HuangNational Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China. huangluqi01@126.com.
Wei GaoSchool of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China. weigao@ccmu.edu.cn.
Capital University · USCapital Medical University · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNChalmers University of Technology · SEChina Academy of Chinese Medical Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

key messageWe found triptolide synthesis is correlated with the expressions of TwGGPPS1 and TwGGPPS4 . This lays the foundation for future studies of biosynthetic pathways for triptolide and other diterpenoids in T. wilfordii. Tripterygium wilfordii is a traditional Chinese medical plant commonly used to treat rheumatoid arthritis. One of its main bioactive compounds is triptolide, which is identified as an abietane-type diterpenoid natural product. Geranylgeranyl diphosphate synthase (GGPPS) catalyses the synthesis of GGPP (geranylgeranyl diphosphate), the common precursor of diterpenes, and is therefore a crucial enzyme in diterpene biosynthesis. A previous study showed that GGPP could be catalyzed by copalyl diphosphate synthase and kaurene synthase like of Salvia miltiorrhiza (SmCPS, SmKSL) to miltiradiene, a key intermediate in tanshinone biosynthesis. In this paper, five new full-length cDNAs (TwGGPPS) encoding GGPP synthases were cloned from T. wilfordii. Sequence comparisons revealed that all six TwGGPPSs (including TwGGPPS2 cloned previously) exhibit similarities to GGPPSs of other plants. Subsequent functional complement assays demonstrated that TwGGPPS1, TwGGPPS4 and TwGGPPS5 can participate in miltiradiene biosynthesis in the recombinant E. coli. Correlation analysis of gene expressions and secondary metabolite accumulation indicated that TwGGPPS1 and TwGGPPS4 are likely involved in the biosynthesis of triptolide. These findings lay the foundation for future studies of the biosynthetic pathways for triptolide and other diterpenoids in T. wilfordii.

Indexed as

AcetatesAmino Acid SequenceBiosynthetic PathwaysCloning, MolecularCyclopentanesDiterpenesEpoxy CompoundsEscherichia coliFarnesyltranstransferaseMolecular Sequence DataOxylipinsPhenanthrenesPhylogenyPlant Growth RegulatorsPlant ProteinsPolyisoprenyl PhosphatesAcetatesCyclopentanesDiterpenesEpoxy CompoundsFarnesyltranstransferasegeranylgeranyl pyrophosphatemethyl jasmonatemiltiradieneOxylipinsPhenanthrenesPlant Growth RegulatorsPlant ProteinsPolyisoprenyl PhosphatestriptolideBiosynthesisGGPPSTripterygium wilfordiiTriptolide

Identifiers

PMID26449416
OpenAlexW2100215239

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.