Structure of <i>Escherichia coli</i> tetrahydrodipicolinate <i>N</i>‐succinyltransferase reveals the role of a conserved C‐terminal helix in cooperative substrate binding
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.
Bibliographic record
Abstract
Tetrahydrodipicolinate N-succinyltransferase is an enzyme present in many bacteria that catalyzes the first step of the succinylase pathway for the synthesis of meso-diaminopimelate and the amino acid L-lysine. Inhibition of the synthesis of meso-diaminopimelate, a component of peptidoglycan present in the cell wall of bacteria, is a potential route for the development of novel anti-bacterial agents. Here, we report the crystal structure of the DapD tetrahydrodipicolinate N-succinyltransferase from Escherichia coli at 2.0 A resolution. Comparison of the structure with the homologous enzyme from Mycobacterium bovis reveals the C-terminal helix undergoes a large rearrangement upon substrate binding, which contributes to cooperativity in substrate binding.
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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