Evidence map›Paper›PMID 33139950›Full record

ArticleNature chemical biology2021

Production of Tyrian purple indigoid dye from tryptophan in Escherichia coli.

Jeongchan Lee, Joonwon Kim, Ji Eun Song, Won-Suk Song, Eun-Jung Kim, Yun-Gon Kim, Hee-Jin Jeong, Hye Rim Kim, Kwon-Young Choi, Byung-Gee Kim

Abstract read
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In one paragraph

Article in Nature chemical biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 81 citations in OpenAlex.

  1. Article
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  7. Modular pathway engineering for enhanced production ofApplied and environmental microbiology · 2025
    Article
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  10. Article
  11. Advances in the Study of Halogenated Natural Products.Current topics in medicinal chemistry · 2025
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Production of indigo by recombinant bacteria.Bioresources and bioprocessing · 2023
    Review
  19. Article
  20. Article
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 6 institutions in 4 countries.

Jeongchan Lee *School of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea.ORCID http://orcid.org/0000-0002-8528-1897
Joonwon Kim *Institute of Engineering Research, Seoul National University, Seoul, Republic of Korea.ORCID http://orcid.org/0000-0001-9964-0777
Ji Eun SongDepartment of Fashion and Clothing, Seowon University, Cheongju, Republic of Korea.
Won-Suk SongSchool of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea.
Eun-Jung KimBio-MAX/N-Bio Institute, Seoul National University, Seoul, Republic of Korea.
Yun-Gon KimDepartment of Chemical Engineering, Soongsil University, Seoul, Republic of Korea.
Hee-Jin JeongDepartment of Biological and Chemical Engineering, Hongik University, Sejong, Republic of Korea.
Hye Rim KimDepartment of Clothing and Textiles, Sookmyung Women's University, Seoul, Republic of Korea.
Kwon-Young ChoiDepartment of Environmental Engineering, Ajou University, Suwon, Republic of Korea.
Byung-Gee KimSchool of Chemical and Biological Engineering, Seoul National University, Seoul, Republic of Korea. byungkim@snu.ac.kr.ORCID http://orcid.org/0000-0002-3776-1001
Seoul National University · KRAjou University · KRHongik University · KRSeowon University · KRSookmyung Women's University · KRSoongsil University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tyrian purple, mainly composed of 6,6'-dibromoindigo (6BrIG), is an ancient dye extracted from sea snails and was recently demonstrated as a biocompatible semiconductor material. However, its synthesis remains limited due to uncharacterized biosynthetic pathways and the difficulty of regiospecific bromination. Here, we introduce an effective 6BrIG production strategy in Escherichia coli using tryptophan 6-halogenase SttH, tryptophanase TnaA and flavin-containing monooxygenase MaFMO. Since tryptophan halogenases are expressed in highly insoluble forms in E. coli, a flavin reductase (Fre) that regenerates FADH

Indexed as

Gene Expression Regulation, BacterialBiocompatible MaterialsCloning, MolecularColoring AgentsEscherichia coliEscherichia coli ProteinsFlavin-Adenine DinucleotideFMN ReductaseGene ExpressionGenetic VectorsHalogenationIndigo CarmineIndolesMetabolic EngineeringOxidoreductasesOxygenases1,5-dihydro-FAD6,6'-dibromoindigoBiocompatible MaterialsColoring Agentsdimethylaniline monooxygenase (N-oxide forming)Escherichia coli ProteinsFlavin-Adenine DinucleotideFMN ReductaseFre protein, E coliIndigo CarmineIndolesOxidoreductasesOxygenasesRecombinant ProteinsTryptophanTryptophanasetryptophan halogenase

Identifiers

PMID33139950
OpenAlexW3095180119

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.