Evidence map›Paper›PMID 19105177›Full record

ArticleChembiochem : a European journal of chemical biology2009

Investigations into viomycin biosynthesis by using heterologous production in Streptomyces lividans.

John J Barkei, Brian M Kevany, Elizabeth A Felnagle, Michael G Thomas

Open access · greenAbstract read
In one paragraph

Article in Chembiochem : a European journal of chemical biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.1field-weighted citation impact, top 21% 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

24 citing papers in PubMed, 53 citations in OpenAlex.

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  11. Heterologous expression of 8-demethyl-tetracenomycin (8-dmtc) affected Streptomyces coelicolor life cycle.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2021
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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

4 authors at 1 institution in 1 country.

John J BarkeiDepartment of Bacteriology, University of Wisconsin-Madison, 6155 Microbial Sciences Building, 1550 Linden Drive, Madison, WI 53706, USA.
Brian M Kevany
Elizabeth A Felnagle
Michael G Thomas
University of Wisconsin–Madison · US

Funding

Discovering New Anti-Tuberculosis DrugsR01AI065850 · NIAID · UNIVERSITY OF WISCONSIN-MADISON · PI THOMAS, MICHAEL GEORGE · 2006 to 2010
$1.5M
NIAID NIH HHS R01 AI065850
6 · The paper itself

Abstract

Viomycin and capreomycin are members of the tuberactinomycin family of antituberculosis drugs. As with many antibacterial drugs, resistance to the tuberactinomycins is problematic in treating tuberculosis; this makes the development of new derivatives of these antibiotics to combat this resistance of utmost importance. To take steps towards developing new derivatives of this family of antibiotics, we have focused our efforts on understanding how these antibiotics are biosynthesized by the producing bacteria so that metabolic engineering of these pathways can be used to generate desired derivatives. Here we present the heterologous production of viomycin in Streptomyces lividans 1326 and the use of targeted-gene deletion as a mechanism for investigating viomycin biosynthesis as well as the generation of viomycin derivatives. Deletion of vioQ resulted in nonhydroxylated derivatives of viomycin, while strains lacking vioP failed to acylate the cyclic pentapeptide core of viomycin with beta-lysine. Surprisingly, strains lacking vioL produced derivatives that had the carbamoyl group of viomycin replaced by an acetyl group. Additionally, the acetylated viomycin derivatives were produced at very low levels. These two observations suggested that the carbamoyl group of the cyclic pentapeptide core of viomycin was introduced at an earlier step in the biosynthetic pathway than previously proposed. We present biochemical evidence that the carbamoyl group is added to the beta-amino group of L-2,3-diaminopropionate prior to incorporation of this amino acid by the nonribosomal peptide synthetases that form the cyclic pentapeptide cores of both viomycin and capreomycin.

Indexed as

Amino AcidsAntitubercular AgentsBacterial ProteinsGene DeletionMultigene FamilyStreptomyces lividansViomycinAmino AcidsAntitubercular AgentsBacterial ProteinsViomycin

Identifiers

PMID19105177
PMCPMC2765823
OpenAlexW2033477764

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.