Gallium(III) Protoporphyrin IX: a soluble dimerizable model for malaria pigment / drug interactions
Bibliographic record
Abstract
AbstractA gallium (III) protoporphyrin IX model as a heme analog, capable of forming a reciprocal dimer analogous to the malaria pigment hemozoin, is synthesized and characterized. This simple metal substitution yields a molecule which is very soluble and easily handled in air, recommending itself to studies of the analogue in solution, particularly in studies of hemozoin formation and of associations with known antimalarials which target its formation. Hemozoin formation is regarded as a heme detoxification pathway in the parasite and its mechanism of formation is a subject of current scientific debate. Disrupting this process and arresting the formation of hemozoin leads to free heme accumulation and death of the parasite. The gallium porphyrin model described here allows for an exact determination of detailed structural information of the formation of bound complexes of metalloporphyrin and for a survey of antimalarial agents which have been efficacious in the past and present. This will provide useful information concerning the direct interaction between the drug and the heme or hemozoin in the acidic aqueous medium of the digestive vacuole of the malaria parasite.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".