Evidence map›Paper›PMID 21778983›Full record

ArticleNature chemistry2011

Tirandamycin biosynthesis is mediated by co-dependent oxidative enzymes.

Jacob C Carlson, Shengying Li, Shamila S Gunatilleke, Yojiro Anzai, Douglas A Burr, Larissa M Podust, David H Sherman

Open access · greenAbstract read
In one paragraph

Article in Nature chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

41 citing papers in PubMed, 94 citations in OpenAlex.

  1. Studies on Secondary Metabolites ofPolish journal of microbiology · 2025
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  14. More P450s Are Involved in Secondary Metabolite Biosynthesis inInternational journal of molecular sciences · 2020
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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

7 authors at 2 institutions in 1 country.

Jacob C CarlsonLife Sciences Institute and Department of Medicinal Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
Shengying Li
Shamila S Gunatilleke
Yojiro Anzai
Douglas A Burr
Larissa M Podust
David H Sherman
University of Michigan–Ann Arbor · USUniversity of California, San Francisco · US

Funding

of Natural Product based Drugs and Bioenergetic Materials from Costa Rican BiotaU01TW007404 · FIC · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SHERMAN, DAVID H · 2005 to 2013
$7.6M
Structure and Engineering of Natural Product Cytochrome P450 EnzymesR01GM078553 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MONTGOMERY, JOHN, PODUST, LARISSA M. · 2007 to 2015
$2.9M
FIC NIH HHS U01 TW007404NIGMS NIH HHS GM078553NIGMS NIH HHS R01 GM078553
6 · The paper itself

Abstract

Elucidation of natural product biosynthetic pathways provides important insights into the assembly of potent bioactive molecules, and expands access to unique enzymes able to selectively modify complex substrates. Here, we show full reconstitution, in vitro, of an unusual multi-step oxidative cascade for post-assembly-line tailoring of tirandamycin antibiotics. This pathway involves a remarkably versatile and iterative cytochrome P450 monooxygenase (TamI) and a flavin adenine dinucleotide-dependent oxidase (TamL), which act co-dependently through the repeated exchange of substrates. TamI hydroxylates tirandamycin C (TirC) to generate tirandamycin E (TirE), a previously unidentified tirandamycin intermediate. TirE is subsequently oxidized by TamL, giving rise to the ketone of tirandamycin D (TirD), after which a unique exchange back to TamI enables successive epoxidation and hydroxylation to afford, respectively, the final products tirandamycin A (TirA) and tirandamycin B (TirB). Ligand-free, substrate- and product-bound crystal structures of bicovalently flavinylated TamL oxidase reveal a likely mechanism for the C10 oxidation of TirE.

Indexed as

AminoglycosidesAnti-Bacterial AgentsEnzymesOxidation-ReductionSpectrophotometry, UltravioletAminoglycosidesAnti-Bacterial AgentsEnzymes

Identifiers

PMID21778983
PMCPMC3154026
OpenAlexW2050143554

What OpenQuestion holds

Textmetadata
LicenceTDM
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.