GAP-43 is key to mitotic spindle control and centrosome-based polarization in neurons
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Bibliographic record
Abstract
In neurons, the position of the centrosome during final mitosis marks the point of emergence of the future axon. However, the molecular underpinnings linking centrosome position to axon emergence are unknown. GAP-43 is a calmodulin-binding IQ motif protein that regulates neuronal cytoskeletal architecture by interacting with F-actin in a phosphorylation dependent manner. Here we show that GAP-43 is associated with the centrosome and plays a critical role in mitosis and acquisition of neuronal polarity in cerebellar granule neurons. In the absence of GAP-43, the centrosome position is delinked from process outgrowth and is only capable of mediating morphological polarization, however molecular specification of the axonal compartment does not take place. These results show that GAP-43 is required to link centrosome position to process outgrowth in order to generate neuronal polarity in cerebellar granule cells.
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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