Splicing diversity revealed by reduced spliceosomes in <i>C. merolae</i> and other organisms
Bibliographic record
Abstract
Pre-mRNA splicing has been considered one of the hallmarks of eukaryotes, yet its diversity is astonishing: the number of substrate introns for splicing ranges from hundreds of thousands in humans to a mere handful in certain parasites. The catalytic machinery that carries out splicing, the spliceosome, is similarly diverse, with over 300 associated proteins in humans to a few tens in other organisms. In this Point of View, we discuss recent work characterizing the reduced spliceosome of the acidophilic red alga Cyanidioschyzon merolae, which further highlights the diversity of splicing in that it does not possess the U1 snRNP that is characteristically responsible for 5' splice site recognition. Comparisons to other organisms with reduced spliceosomes, such as microsporidia, trypanosomes, and Giardia, help to identify the most highly conserved splicing factors, pointing to the essential core of this complex machine. These observations argue for increased exploration of important biochemical processes through study of a wider ranger of organisms.
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| Research integrity | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".