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Record W4415045967 · doi:10.1021/acsomega.5c05271

NMR Analysis and Assignment of a Biosynthesis Gene Cluster for Trichokonins VI and VIII, Antiplasmodial Large Peptaibols Produced by a <i>Trichoderma</i> sp. Fungus

2025· article· en· W4415045967 on OpenAlexaff
Ariane F. Bertonha, David E. Williams, Karen de Jesus Nicácio, Marcelo R. de Amorim, Sydney Schoellhorn, Anna Caroline Campos Aguiar, Tania Valdés, Giovana Rossi Mendes, Igor M. R. Moura, Lamonielli F. Michaliski, Matheus Gotha, Cauê Arantes Wagner Zuccarino, Lara Durães Sette, Antônio G. Ferreira, Raymond J. Andersen, Rafael V. C. Guido, Roberto G. S. Berlinck

Bibliographic record

VenueACS Omega · 2025
Typearticle
Languageen
FieldMedicine
TopicMicrobial Natural Products and Biosynthesis
Canadian institutionsUniversity of British Columbia
FundersNational Institute of Food and AgricultureConselho Nacional de Desenvolvimento Científico e TecnológicoCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorFundação de Amparo à Pesquisa do Estado de São PauloU.S. Department of Agriculture
KeywordsGene clusterBiosynthesisCircular dichroismGeneAmino acidFungusPeptide

Abstract

fetched live from OpenAlex

High Resolution Image Download MS PowerPoint Slide Peptaibols are modified linear peptides that typically include an acyl fragment connected at the N -terminal moiety, a reduced acid extremity and α-aminoisobutyric acid residues as common features, as well as other structural modifications. Peptaibols very often display potent biological activity, in particular, antimicrobial activity. Trichokonins VI ( 1 ) and VIII ( 2 ) are large peptaibols composed of 20 amino acids, which were previously only characterized by analysis of MS/MS data. We herein report the first full characterization of trichokonins VI ( 1 ) and VIII ( 2 ) by analysis of NMR data, along with an analysis by electronic circular dichroism and HRMS/MS data. Also, full genome sequencing and analysis of Trichoderma sp. L2-2 allowed us to identify a peptaibol biosynthesis gene cluster and the proposal for a biosynthetic assembly of trichokonins VI and VIII. Trichokonins VI and VIII also demonstrated antiplasmodial activity at the submicromolar range against Plasmodium falciparum .

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.864

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.250
Teacher spread0.242 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2025
Admission routes1
Has abstractyes

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