Evidence map›Paper›PMID 8975595›Full record

ArticleApplied and environmental microbiology1996

Food-grade cloning and expression system for Lactococcus lactis.

C Platteeuw, I van Alen-Boerrigter, S van Schalkwijk, W M de Vos

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
13.2field-weighted citation impact, top 1% 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

43 citing papers in PubMed, 134 citations in OpenAlex.

  1. Review
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  11. RecombinantBioMed research international · 2020
    Article
  12. Construction of a shuttle expression vector for lactic acid bacteria.Journal, genetic engineering & biotechnology · 2019
    Article
  13. Article
  14. Article
  15. Draft Genome Sequence of the Plasmid-FreeGenome announcements · 2017
    Article
  16. Review
  17. Article
  18. Article
  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

4 authors at 1 institution in 1 country.

C PlatteeuwDepartment of Biophysical Chemistry, NIZO, Ede, The Netherlands.
I van Alen-Boerrigter
S van Schalkwijk
W M de Vos
Nederlands Instituut Voor Zuivel Oonderzoek · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A versatile set of cloning and expression vectors has been developed for application in self-cloning and other genetic modifications of Lactococcus lactis. The expression vectors were equipped with the controlled and strong lacA promoter of the lactococcal lactose operon. In addition, the transcriptional terminator of the aminopeptidase N gene, pepN, was inserted, which in some cases increased the genetic stabilities of the vectors and the cloned DNA. The small, 0.3-kb lacF gene encoding the soluble carrier enzyme IIALac was used as a dominant selection marker in the plasmid-free L. lactis strain NZ3000 carrying an in-frame deletion of the chromosomal lacF gene. Lactose-utilizing transformants were easily selected on lactose indicator plates at high frequencies and showed a copy number of approximately 50 plasmids per cell. All vectors were stably maintained in the lacF strain NZ3000 when grown on lactose, and only the high-level expression vectors showed some instability when their host was grown on glucose-containing medium. The application potentials of the expression vectors carrying the lacF marker were determined by cloning of the promoterless Escherichia coli gusA reporter gene under control of the lacA promoter followed by analysis of its expression. While in one of the vectors this resulted in a promoter-down mutation in the -10 region of the lacA promoter, in other vectors high-level and controlled expression of the gusA gene was observed.

Indexed as

Food MicrobiologyBase SequenceCloning, MolecularGene ExpressionGenes, BacterialLactococcus lactisMolecular Sequence DataPlasmidsPromoter Regions, Genetic

Identifiers

PMID8975595
PMCPMC167865
OpenAlexW2102129995

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.