Evidence map›Paper›PMID 25133732›Full record

ArticlePloS one2014

Metabolic engineering of Saccharomyces cerevisiae for caffeine and theobromine production.

Lu Jin, Mohammad Wadud Bhuiya, Mengmeng Li, XiangQi Liu, Jixiang Han, WeiWei Deng, Min Wang, Oliver Yu, Zhengzhu Zhang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

10 citing papers in PubMed, 28 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

9 authors at 3 institutions in 2 countries.

Lu JinKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
Mohammad Wadud BhuiyaConagen Inc., St. Louis, Missouri, United States of America.
Mengmeng LiKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
XiangQi LiuKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
Jixiang HanConagen Inc., St. Louis, Missouri, United States of America.
WeiWei DengKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
Min WangKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
Oliver YuDonald Danforth Plant Science Center, St. Louis, Missouri, United States of America.
Zhengzhu ZhangKey Laboratory of Tea Biochemistry and Biotechnology, Ministry of Education, Anhui Agricultural University, Hefei, PR China.
Anhui Agricultural University · CNConagen (United States) · USDonald Danforth Plant Science Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Caffeine (1, 3, 7-trimethylxanthine) and theobromine (3, 7-dimethylxanthine) are the major purine alkaloids in plants, e.g., tea (Camellia sinensis) and coffee (Coffea arabica). Caffeine is a major component of coffee and is used widely in food and beverage industries. Most of the enzymes involved in the caffeine biosynthetic pathway have been reported previously. Here, we demonstrated the biosynthesis of caffeine (0.38 mg/L) by co-expression of Coffea arabica xanthosine methyltransferase (CaXMT) and Camellia sinensis caffeine synthase (TCS) in Saccharomyces cerevisiae. Furthermore, we endeavored to develop this production platform for making other purine-based alkaloids. To increase the catalytic activity of TCS in an effort to increase theobromine production, we identified four amino acid residues based on structural analyses of 3D-model of TCS. Two TCS1 mutants (Val317Met and Phe217Trp) slightly increased in theobromine accumulation and simultaneously decreased in caffeine production. The application and further optimization of this biosynthetic platform are discussed.

Indexed as

Biosynthetic PathwaysCaffeineCamellia sinensisCoffeaIndustrial MicrobiologyMetabolic EngineeringMethyltransferasesMutationSaccharomyces cerevisiaeTheobromine7-methylxanthosine synthaseCaffeinecaffeine synthaseMethyltransferasesTheobromine

Identifiers

PMID25133732
PMCPMC4136831
OpenAlexW2084750975

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.