Explicit Water Molecules Play a Key Role in the Mechanism of Rhodium‐Substituted Human Carbonic Anhydrase
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The efficient conversion of carbon dioxide into useful products is a prime challenge to modern chemistry. An alternative route to address this challenge based on a rhodium‐substituted human carbonic anhydrase is described that can be considered the first cofactor‐independent reductase. This artificial enzyme is able to convert CO 2 into formic acid, with potential applications in renewable energy. Our quantum mechanical investigation (QM/QM′ method), which considers the entire catalytic pocket (390 atoms), provides evidence that the catalytic process is governed by an energetically favored σ‐bond‐metathesis mechanism and the rate‐limiting step is the release of formic acid (11.7 kcal mol −1 ). Water molecules are found to play an active role during the chemical process by contributing to reduce dramatically the energy of the rate‐limiting step and favoring an efficient regeneration of the catalyst.
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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 | 0.000 | 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) | 0.000 | 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 it