Evidence map›Paper›PMID 22582065›Full record

ArticleApplied and environmental microbiology2012

Improvement of FK506 production in Streptomyces tsukubaensis by genetic enhancement of the supply of unusual polyketide extender units via utilization of two distinct site-specific recombination systems.

Dandan Chen, Qi Zhang, Qinglin Zhang, Peilin Cen, Zhinan Xu, Wen Liu

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
5.4field-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

30 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
  2. Article
  3. An NADH/NADApplied and environmental microbiology · 2024
    Article
  4. Article
  5. Article
  6. Review
  7. Optimization of the precursor supply for an enhanced FK506 production inFrontiers in bioengineering and biotechnology · 2022
    Article
  8. Article
  9. Review
  10. More P450s Are Involved in Secondary Metabolite Biosynthesis inInternational journal of molecular sciences · 2020
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  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

6 authors at 3 institutions in 1 country.

Dandan ChenDepartment of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
Qi Zhang
Qinglin Zhang
Peilin Cen
Zhinan Xu
Wen Liu
Shanghai Institute of Organic Chemistry · CNZhejiang University · CNChinese Academy of Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

FK506 is a potent immunosuppressant that has a wide range of clinical applications. Its 23-member macrocyclic scaffold, mainly with a polyketide origin, features two methoxy groups at C-13 and C-15 and one allyl side chain at C-21, due to the region-specific incorporation of two unusual extender units derived from methoxymalonyl-acyl carrier protein (ACP) and allylmalonyl-coenzyme A (CoA), respectively. Whether their intracellular formations can be a bottleneck for FK506 production remains elusive. In this study, we report the improvement of FK506 yield in the producing strain Streptomyces tsukubaensis by the duplication of two sets of pathway-specific genes individually encoding the biosyntheses of these two extender units, thereby providing a promising approach to generate high-FK506-producing strains via genetic manipulation. Taking advantage of the fact that S. tsukubaensis is amenable to two actinophage (ΦC31 and VWB) integrase-mediated recombination systems, we genetically enhanced the biosyntheses of methoxymalonyl-ACP and allylmalonyl-CoA, as indicated by transcriptional analysis. Together with the optimization of glucose supplementation, the maximal FK506 titer eventually increased by approximately 150% in comparison with that of the original strain. The strategy of engineering the biosynthesis of unusual extender units described here may be applicable to improving the production of other polyketide or nonribosomal peptide natural products that contain pathway-specific building blocks.

Indexed as

Acyl Carrier ProteinAllyl CompoundsBase SequenceBiosynthetic PathwaysBiotechnologyDNA PrimersEscherichia coliGene DuplicationImmunosuppressive AgentsMolecular Sequence DataMolecular StructurePolyketidesRecombination, GeneticReverse Transcriptase Polymerase Chain ReactionSequence Analysis, DNAStreptomycesAcyl Carrier ProteinAllyl CompoundsDNA PrimersImmunosuppressive AgentsPolyketidesTacrolimus

Identifiers

PMID22582065
PMCPMC3416438
OpenAlexW2007593670

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.