Evidence map›Paper›PMID 14532063›Full record

ArticleApplied and environmental microbiology2003

Optimized expression of a thermostable xylanase from Thermomyces lanuginosus in Pichia pastoris.

Mônica C Triches Damaso, Marcius S Almeida, Eleonora Kurtenbach, Orlando B Martins, Nei Pereira, Carolina M M C Andrade, Rodolpho M Albano

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed, 121 citations in OpenAlex.

  1. Article
  2. A Lipase Gene ofInternational journal of molecular sciences · 2024
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  12. Expression, Docking, and Molecular Dynamics of Endo-BioMed research international · 2017
    Article
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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 3 institutions in 1 country.

Mônica C Triches DamasoDepartamento de Engenharia Bioquímica, Escola de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Marcius S Almeida
Eleonora Kurtenbach
Orlando B Martins
Nei Pereira
Carolina M M C Andrade
Rodolpho M Albano
Universidade Federal do Rio de Janeiro · BRSociedade Brasileira de Química · BRUniversidade do Estado do Rio de Janeiro · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Highly efficient production of a Thermomyces lanuginosus IOC-4145 beta-1,4-xylanase was achieved in Pichia pastoris under the control of the AOX1 promoter. P. pastoris colonies expressing recombinant xylanase were selected by enzymatic activity plate assay, and their ability to secrete high levels of the enzyme was evaluated in small-scale cultures. Furthermore, an optimization of enzyme production was carried out with a 2(3) factorial design. The influence of initial cell density, methanol, and yeast nitrogen base concentration was evaluated, and initial cell density was found to be the most important parameter. A time course profile of recombinant xylanase production in 1-liter flasks with the optimized conditions was performed and 148 mg of xylanase per liter was achieved. Native and recombinant xylanases were purified by gel filtration and characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, circular dichroism spectroscopy, matrix-assisted laser desorption ionization-time of flight-mass spectrometry and physicochemical behavior. Three recombinant protein species of 21.9, 22.1, and 22.3 kDa were detected in the mass spectrum due to variability in the amino terminus. The optimum temperature, thermostability, and circular dichroic spectra of the recombinant and native xylanases were identical. For both enzymes, the optimum temperature was 75 degrees C, and they retained 60% of their original activity after 80 min at 70 degrees C or 40 min at 80 degrees C. The high level of fully active recombinant xylanase obtained in P. pastoris makes this expression system attractive for fermentor growth and industrial applications.

Indexed as

AscomycotaCulture MediaEndo-1,4-beta XylanasesEnzyme StabilityHot TemperaturePichiaPlasmidsRecombinant ProteinsCulture MediaEndo-1,4-beta XylanasesRecombinant Proteins

Identifiers

PMID14532063
PMCPMC201252
OpenAlexW2126313566

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.