Multiple Pathways Regulate Endocytic Coat Disassembly in<i> Saccharomyces cerevisiae</i> for Optimal Downstream Trafficking
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Bibliographic record
Abstract
Recently, a pathway involving the highly choreographed recruitment of endocytic proteins to sites of clathrin/actin-mediated endocytosis has been revealed in budding yeast. Here, we investigated possible roles for candidate disassembly factors in regulation of the dynamics of the endocytic coat proteins Sla2p, Ent1p, Ent2p, Sla1p, Pan1p and End3p, each of which has mammalian homologues. Live cell imaging analysis revealed that in addition to the synaptojanin, Sjl2p, the Ark1p and Prk1p protein kinases, the putative Arf GTPase-activating protein, Gts1p and the Arf GTPase-interacting protein, Lsb5p, also arrive at endocytic sites late in the internalization pathway, consistent with roles in coat disassembly. Analysis of coat dynamics in various mutant backgrounds revealed that multiple pathways, including the ones mediated by an Arf guanosine triphosphatase and a synaptojanin, facilitate efficient disassembly of different endocytic coat proteins. In total, at least four separate processes are important for disassembly of endocytic complexes and efficient downstream trafficking of endocytic cargo.
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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