Evidence map›Paper›PMID 12857844›Full record

ArticlePlant physiology2003

Biochemical and molecular characterization of a novel UDP-glucose:anthocyanin 3'-O-glucosyltransferase, a key enzyme for blue anthocyanin biosynthesis, from gentian.

Masako Fukuchi-Mizutani, Hiroaki Okuhara, Yuko Fukui, Masahiro Nakao, Yukihisa Katsumoto, Keiko Yonekura-Sakakibara, Takaaki Kusumi, Toshiharu Hase, Yoshikazu Tanaka

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In one paragraph

Article in Plant physiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 166 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 2 institutions in 1 country.

Masako Fukuchi-MizutaniInstitute for Fundamental Research, Suntory Ltd., 1-1-1 Wakayamadai, Shimamoto-cho, Mishima-gun, Osaka, 618-8503, Japan. Masako_Mizutani@suntory flowers.co.jp
Hiroaki Okuhara
Yuko Fukui
Masahiro Nakao
Yukihisa Katsumoto
Keiko Yonekura-Sakakibara
Takaaki Kusumi
Toshiharu Hase
Yoshikazu Tanaka
Suntory (Japan) · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gentian (Gentiana triflora) blue petals predominantly contain an unusually blue and stable anthocyanin, delphinidin 3-O-glucosyl-5-O-(6-O-caffeoyl-glucosyl)-3'-O-(6-O-caffeoyl-glucoside) (gentiodelphin). Glucosylation and the subsequent acylation of the 3'-hydroxy group of the B-ring of anthocyanins are important to the stabilization of and the imparting of bluer color to these anthocyanins. The enzymes and their genes involved in these modifications of the B-ring, however, have not been characterized, purified, or isolated to date. In this study, we purified a UDP-glucose (Glc):anthocyanin 3'-O-glucosyltransferase (3'GT) enzyme to homogeneity from gentian blue petals and isolated a cDNA encoding a 3'GT based on the internal amino acid sequences of the purified 3'GT. The deduced amino acid sequence indicates that 3'GT belongs to the same subfamily as a flavonoid 7-O-glucosyltransferase from Schutellaria baicalensis in the plant glucosyltransferase superfamily. Characterization of the enzymatic properties using the recombinant 3'GT protein revealed that, in contrast to most of flavonoid glucosyltransferases, it has strict substrate specificity: 3'GT specifically glucosylates the 3'-hydroxy group of delphinidin-type anthocyanins containing Glc groups at 3 and 5 positions. The enzyme specifically uses UDP-Glc as the sugar donor. The specificity was confirmed by expression of the 3'GT cDNA in transgenic petunia (Petunia hybrida). This is the first report of the gene isolation of a B-ring-specific glucosyltransferase of anthocyanins, which paves the way to modification of flower color by production of blue anthocyanins.

Indexed as

Amino Acid SequenceAnthocyaninsBase SequenceCloning, MolecularDNA, ComplementaryFlowersGene ExpressionGene Expression ProfilingGentianaGlucosyltransferasesMagnetic Resonance SpectroscopyMolecular Sequence DataMolecular StructurePetuniaPhylogenyPlants, Genetically ModifiedAnthocyaninsDNA, ComplementaryGlucosyltransferasesRNA, Messenger

Identifiers

PMID12857844
PMCPMC167102
OpenAlexW2125647971

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.