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Record W3199188946 · doi:10.1016/j.mex.2021.101520

Dynamic calculation of ATP/O ratios measured using Magnesium Green (MgGr)™

2021· article· en· W3199188946 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueMethodsX · 2021
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicMitochondrial Function and Pathology
Canadian institutionsUniversity of Ottawa
FundersMinistry of Environmental ProtectionNatural Sciences and Engineering Research Council of CanadaCanada Research Chairs
KeywordsOxygenChemistryOxidative phosphorylationMagnesiumAdenosine triphosphateCellular respirationATP synthaseMitochondrionAnalytical Chemistry (journal)BiophysicsBiological systemBiochemistryChromatographyBiologyOrganic chemistry

Abstract

fetched live from OpenAlex

Mitochondria generate aerobic cellular energy (i.e., ATP) through the reduction of oxygen to water via oxidative phosphorylation. The efficiency of this pathway can be measured by the phosphate/oxygen (ATP/O) ratio, which is the amount of ATP produced per oxygen atom reduced. This ratio thus provides a measure of the efficiency of mitochondrial respiration that can be readily compared between species. The magnesium green (MgGr) fluorometric method permits easy measurement of ATP/O ratios from isolated mitochondria but the standard analysis approach employs an endpoint method to calculate ATP/O ratios. Here, we present a modified method of ATP/O calculation that permits dynamic observation of fluorescent measurements of the consumption of O2 (JO2) and the production of ATP (JATP). Specifically, by substituting the slope of a straight line within a given period of time (seconds to minutes) with the slope of a tangent to each time point (per second), it is possible to evaluate JO2, JATP and the ATP/O ratio in a dynamic manner. Provides second-by-second visualization of ATP/O ratios throughout experiments vs. a single measurement. Dynamic visualization allows for easy identification of outlying data and more accurate calculation of mean ATP/O ratios.

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.

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)0.000
metaresearch head score (Gemma)0.000
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: Methods · Consensus signal: Methods
Teacher disagreement score0.058
Threshold uncertainty score0.386

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
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 head0.040
GPT teacher head0.328
Teacher spread0.288 · 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