Gα <sub>s</sub> protein binds ubiquitin to regulate epidermal growth factor receptor endosomal sorting
Bibliographic record
Abstract
Significance Gα s protein is classically known as a signaling component of cell surface G protein-coupled receptor transduction pathways. However, Gα s has also been localized on endosomes, where it plays a role in receptor sorting to lysosomes. How Gα s regulates this trafficking step is unclear. Although Gα s structure has been known for years, we found a motif in Gα s that allows its interaction with ubiquitin, a key signal for cargo sorting to the lysosomal pathway. We show that disrupting the ubiquitin-interacting motif (UIM) in Gα s impairs its interaction with components of the endosomal sorting machinery and the lysosomal degradation of epidermal growth factor receptor. This study provides molecular insights on the mechanism by which Gα s is involved in this noncanonical function.
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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) | 0.001 | 0.001 |
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".