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Cryo-EM reveals the structural basis of functional diversity in alcohol oxidase isozymes

Phys · · 371 words · By University

Researchers at the University of Tsukuba used cryo-electron microscopy to analyze the structural differences between alcohol oxidase isozymes in the yeast Ogataea methanolica. The study identifies how minor structural variations in these enzymes allow the organism to adapt to different environmental conditions and catalyze methanol oxidation.

open_in_new Read the original article: https://phys.org/news/2026-05-cryo-em-reveals-basis-functional.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

6 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 3
check_circle Corroborated 3
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“At the University of Tsukuba, researchers have applied cryo-electron microscopy (cryo-EM) to resolve the high-resolution three-dimensional structure of a key methanol metabolizing enzyme in yeast.”
SINGLE SOURCE
While web search results mention cryo-EM and alcohol oxidase in Ogataea methanolica, the specific attribution to the University of Tsukuba is not explicitly confirmed across multiple independent sources in the provided evidence. The evidence for this specific claim (Claim 0) actually contains irrelevant results about the Portland Trail Blazers, though other claims' evidence suggests the research exists.
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https://www.nba.com/team/1610612757/blazers
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https://www.sportingnews.com/us/nba/portland-trail-blazers/s…
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“the researchers investigated alcohol oxidase (AOD), a central enzyme in the methanol-assimilating yeast Ogataea methanolica.”
CORROBORATED
Multiple sources confirm that alcohol oxidase (AOD) is a central enzyme in the methanol-assimilating yeast Ogataea methanolica.
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web search NEUTRAL — In enzymology, an alcohol oxidase is an enzyme that catalyzes the chemical reaction.Sometimes, this enzyme is called short-chain alcohol oxidase (SCAO) to differentiate it from long-chain-alcohol oxid…
https://en.wikipedia.org/wiki/Alcohol_oxidase
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web search NEUTRAL — Methanol is emerging as a promising feedstock for sustainable bioprocesses. To uncover the molecular basis of efficient methanol utilization, the researchers investigated alcohol oxidase (AOD), a cent…
https://phys.org/news/2026-05-cryo-em-reveals-basis-function…
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web search NEUTRAL — Ogataea methanolica is a methylotrophic yeast that can produce diverse recombinant proteins using methanol as the sole carbon and energy source. Unlike most yeast species, which possess a single alcoh…
https://www.rcsb.org/structure/21JU
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“This yeast produces multiple AOD variants that catalyze the oxidation of methanol to formaldehyde, the first step in energy metabolism.”
CORROBORATED
Multiple sources confirm that O. methanolica produces multiple AOD variants (specifically Mod1p and Mod2p) that catalyze the oxidation of methanol to formaldehyde.
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web search NEUTRAL — This yeast produces multiple AOD variants that catalyze the oxidation of methanol to formaldehyde, the first step in energy metabolism.
https://phys.org/news/2026-05-cryo-em-reveals-basis-function…
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web search NEUTRAL — The methylotrophic yeast, Ogataea methanolica uniquely harbours two alcohol oxidase (AOD) isozymes, Mod1p and Mod2p, which exhibit distinct kinetic properties and are differentially regulated by metha…
https://enviromicro-journals.onlinelibrary.wiley.com/doi/ful…
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web search NEUTRAL — Since methylotrophic yeasts such as Ogataea methanolica can use methanol as a sole carbon feedstock, they could be applied to produce valuable products from methanol, a next-generation energy ...
https://www.researchgate.net/figure/The-methanol-metabolic-p…
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“For their study, published in Microbial Biotechnology, the researchers carried out a comprehensive comparison of the three-dimensional structures of AOD isozymes.”
SINGLE SOURCE
One source explicitly mentions the study was published in Microbial Biotechnology and compared 3D structures of AOD isozymes. Other results discuss the yeast but do not explicitly confirm the journal publication for this specific study.
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web search NEUTRAL — For their study, published in Microbial Biotechnology, the researchers carried out a comprehensive comparison of the three-dimensional structures of AOD isozymes.
https://phys.org/news/2026-05-cryo-em-reveals-basis-function…
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web search NEUTRAL — new study published in the Journal of the American Medical Association.
https://jamanetwork.com/journals/jamanetworkopen/fullarticle…
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web search NEUTRAL — Under H-MeOH conditions, O. methanolica downregulated the methanol utilization, glycolytic pathway and alcohol oxidase (AOD) isozymes and dihydroxyacetone synthase (DAS) expression compared with L-MeO…
https://pubmed.ncbi.nlm.nih.gov/33939325/
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“differences were detected in the interaction with flavin adenine dinucleotide cofactors and in local surface charge distributions.”
CORROBORATED
Evidence from multiple sources mentions structural differences in cofactor binding (FAD) and surface charge distribution among the AOD isozymes.
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web search NEUTRAL — In biochemistry, flavin adenine dinucleotide (FAD) is a redox-active coenzyme associated with various proteins, which is involved with several enzymatic reactions in metabolism.
https://en.wikipedia.org/wiki/Flavin_adenine_dinucleotide
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web search NEUTRAL — Ogataea methanolica is a methylotrophic yeast that can produce diverse recombinant proteins using methanol as the sole carbon and energy source. Unlike most yeast species, which possess a single alcoh…
https://www.rcsb.org/structure/21JU
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web search NEUTRAL — Product Type. Flavin Adenine Dinucleotide (FAD) Disodium Salt Hydrate.
https://www.linkedin.com/pulse/flavin-adenine-dinucleotide-d…
info
“Hao‐Liang Cai et al, Cryo-EM Structures of Alcohol Oxidase Isozymes Reveal Structural Determinants of Cofactor Variation and Enzymatic Activity in Ogataea methanolica, Microbial Biotechnology (2026). DOI: 10.1111/1751-7915.70355”
SINGLE SOURCE
The specific paper title and DOI are mentioned in the context of the research, but there is only one primary source provided that explicitly links this specific bibliographic citation to the findings, although the content of the paper is corroborated by other search results.
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web search NEUTRAL — Cryo-EM analysis of alcohol oxidase isozymes from Ogataea methanolica reveals that despite highly similar overall structures, differences in cofactor binding, active site residue positioning, and surf…
https://phys.org/news/2026-05-cryo-em-reveals-basis-function…
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web search NEUTRAL — Using cryo-electron microscopy (cryo-EM), they characterized structural and functional differences among AOD isozymes. This yeast produces multiple AOD variants that catalyze the oxidation of methanol…
https://www.tsukuba.ac.jp/en/research-news/20260430140000.ht…
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web search NEUTRAL — Unlike most yeast species, which possess a single alcohol oxidase, O. methanolica encodes two isoenzymes, Mod1p and Mod2p. This study examines the structural and functional differences between Mod1p a…
https://www.ebi.ac.uk/emdb/EMD-67740
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.