Characteristics of the Interaction between Hsc70 and the Transferrin Receptor in Exosomes Released during Reticulocyte Maturation
Bibliographic record
Abstract
The transferrin receptor (TfR) of reticulocytes is released in vesicular form (exosomes) during their maturation to erythrocytes. The heat shock cognate 70-kDa protein (Hsc70) has been demonstrated to interact with the cytosolic domain of the TfR and could thus trigger the receptor toward this secretion pathway. We investigated the characteristics of the interaction between Hsc70 and the TfR in exosomes with an in vitro binding assay using TfR immobilized on Sepharose beads and purified Hsc70. The results show that Hsc70 binds to exosomal TfR with characteristics expected of a chaperone/peptide interaction. We demonstrated that heat-denatured luciferase competed for in vitro binding, dependent on the nucleotide bound to Hsc70, and that this interaction activates the ATPase activity of Hsc70. Moreover, we used immunosuppressive agents that interact with Hsc70, thus decreasing Hsc70 binding to TfR in our in vitro binding assay and enabling us to assess the role of this interaction in vivo during reticulocyte maturation.
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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 | 0.001 |
| 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".