Evidence map›Paper›PMID 32640001›Full record

ArticlePloS one2020

Characterization of two family AA9 LPMOs from Aspergillus tamarii with distinct activities on xyloglucan reveals structural differences linked to cleavage specificity.

Antonielle V Monclaro, Dejan M Petrović, Gabriel S C Alves, Marcos M C Costa, Glaucia E O Midorikawa, Robert N G Miller, Edivaldo X F Filho, Vincent G H Eijsink, Anikó Várnai

Abstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
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

13 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Comparison of Six Lytic Polysaccharide Monooxygenases fromApplied and environmental microbiology · 2022
    Article
  10. Article
  11. Review
  12. Review
  13. 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

9 authors.

Antonielle V MonclaroLaboratory of Enzymology, University of Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil.
Dejan M PetrovićFaculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway.
Gabriel S C AlvesLaboratory of Microbiology, University of Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil.
Marcos M C CostaBrazilian Agricultural Research Corporation, Embrapa CENARGEN, Brasília, Brazil.
Glaucia E O MidorikawaLaboratory of Microbiology, University of Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil.
Robert N G MillerLaboratory of Microbiology, University of Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil.
Edivaldo X F FilhoLaboratory of Enzymology, University of Brasília, Campus Universitário Darcy Ribeiro, Brasília, Brazil.
Vincent G H EijsinkFaculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway.
Anikó VárnaiFaculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway.ORCID 0000-0002-2796-514X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aspergillus tamarii grows abundantly in naturally composting waste fibers of the textile industry and has a great potential in biomass decomposition. Amongst the key (hemi)cellulose-active enzymes in the secretomes of biomass-degrading fungi are the lytic polysaccharide monooxygenases (LPMOs). By catalyzing oxidative cleavage of glycoside bonds, LPMOs promote the activity of other lignocellulose-degrading enzymes. Here, we analyzed the catalytic potential of two of the seven AA9-type LPMOs that were detected in recently published transcriptome data for A. tamarii, namely AtAA9A and AtAA9B. Analysis of products generated from cellulose revealed that AtAA9A is a C4-oxidizing enzyme, whereas AtAA9B yielded a mixture of C1- and C4-oxidized products. AtAA9A was also active on cellopentaose and cellohexaose. Both enzymes also cleaved the β-(1→4)-glucan backbone of tamarind xyloglucan, but with different cleavage patterns. AtAA9A cleaved the xyloglucan backbone only next to unsubstituted glucosyl units, whereas AtAA9B yielded product profiles indicating that it can cleave the xyloglucan backbone irrespective of substitutions. Building on these new results and on the expanding catalog of xyloglucan- and oligosaccharide-active AA9 LPMOs, we discuss possible structural properties that could underlie the observed functional differences. The results corroborate evidence that filamentous fungi have evolved AA9 LPMOs with distinct substrate specificities and regioselectivities, which likely have complementary functions during biomass degradation.

Indexed as

Amino Acid SequenceAspergillusBinding SitesChromatography, High Pressure LiquidCloning, MolecularCopperFungal ProteinsGlucansMixed Function OxygenasesOxidation-ReductionPhylogenyPolysaccharidesRecombinant ProteinsSubstrate SpecificityXylansCopperFungal ProteinsGlucanshemicelluloseMixed Function OxygenasesPolysaccharidesRecombinant ProteinsXylansxyloglucan

Identifiers

PMID32640001
PMCPMC7343150

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.