Chemical proteomics reveals human liver fatty acid binding protein as a predominant and selective target of triphenyl phosphate
Bibliographic record
Abstract
in-gel fluorescent imaging showed that the TPHP-probe covalently bound many proteins with substantial interspecies variation. Using shotgun proteomics, we confirmed liver carboxylesterases as major targets in rat liver but identified liver fatty acid binding protein (L-FABP) as a novel and predominant target in human liver cells. The binding of TPHP to L-FABP was also confirmed by using recombinant L-FABP protein. We confirmed that TPHP binding to L-FABP is structurally selective, demonstrating that aryl side chains and the phosphate ester center are both essential for binding. Thus, we conclude that L-FABP is a predominant and selective target of TPHP in human hepatic proteome and that covalent protein adduction is an understudied toxicity mechanism for TPHP, presenting concerns regarding its widespread usage.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".