Evidence map›Paper›PMID 21255328›Full record

ReviewMicrobial biotechnology2010

Regulation and compartmentalization of β-lactam biosynthesis.

Juan F Martín, Ricardo V Ullán, Carlos García-Estrada

Open access · bronzeAbstract readReview
In one paragraph

Review in Microbial biotechnology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

33 citing papers in PubMed, 97 citations in OpenAlex.

  1. EngineeringACS omega · 2026
    Article
  2. Article
  3. Review
  4. Comparative Proteomic Analysis ofJournal of fungi (Basel, Switzerland) · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. Microorganisms · 2022
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Fungal evolution: cellular, genomic and metabolic complexity.Biological reviews of the Cambridge Philosophical Society · 2020
    Article
  14. Article
  15. Review
  16. Review
  17. Genetic Modification ofMicroorganisms · 2019
    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

3 authors at 1 institution in 1 country.

Juan F MartínInstitute of Biotechnology of León, Science Park, Avda. Real 1, 24006 León, Spain. jf.martin@unileon.es
Ricardo V Ullán
Carlos García-Estrada
Universidad de León · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Penicillins and cephalosporins are β-lactam antibiotics widely used in human medicine. The biosynthesis of these compounds starts by the condensation of the amino acids L-α-aminoadipic acid, L-cysteine and L-valine to form the tripeptide δ-L-α-aminoadipyl-l-cysteinyl-D-valine catalysed by the non-ribosomal peptide 'ACV synthetase'. Subsequently, this tripeptide is cyclized to isopenicillin N that in Penicillium is converted to hydrophobic penicillins, e.g. benzylpenicillin. In Acremonium and in streptomycetes, isopenicillin N is later isomerized to penicillin N and finally converted to cephalosporin. Expression of genes of the penicillin (pcbAB, pcbC, pendDE) and cephalosporin clusters (pcbAB, pcbC, cefD1, cefD2, cefEF, cefG) is controlled by pleitropic regulators including LaeA, a methylase involved in heterochromatin rearrangement. The enzymes catalysing the last two steps of penicillin biosynthesis (phenylacetyl-CoA ligase and isopenicillin N acyltransferase) are located in microbodies, as shown by immunoelectron microscopy and microbodies proteome analyses. Similarly, the Acremonium two-component CefD1-CefD2 epimerization system is also located in microbodies. This compartmentalization implies intracellular transport of isopenicillin N (in the penicillin pathway) or isopenicillin N and penicillin N in the cephalosporin route. Two transporters of the MFS family cefT and cefM are involved in transport of intermediates and/or secretion of cephalosporins. However, there is no known transporter of benzylpenicillin despite its large production in industrial strains.

Indexed as

AcremoniumAnti-Bacterial Agentsbeta-LactamsBiosynthetic PathwaysGene Expression Regulation, BacterialGene Expression Regulation, FungalOrganellesPenicilliumStreptomycesAnti-Bacterial Agentsbeta-Lactams

Identifiers

PMID21255328
PMCPMC3815371
OpenAlexW2024458176

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.