Compact intergenic regions of the pufferfish genome facilitate isolation of gene promoters: characterization of <i>Fugu</i> 3′‐phosphoadenosine 5′‐phosphosulfate synthase 2 (<i>fPapss2</i>) gene promoter function in transgenic <i>Xenopus</i>
Bibliographic record
Abstract
The highly compact nature of the pufferfish (Fugu rubripes) genome renders it a useful tool not only for annotating coding regions within vertebrate genomes, but also for the identification of sequences important to gene regulation. Indeed, owing to this compaction it will be feasible in many instances to initiate analyses using entire intergenic regions when mapping gene promoters; a strategy that is very rarely feasible with the expanded genomes of other species. Stemming from our interest in studying promoters expressed in chondrocytes, we selected for study the intergenic region upstream of Fugu 3'-phosphoadenosine 5'-phosphosulfate synthase 2, fPapss2, a gene required for the normal development of cartilage extracellular matrix. Functional characterization of the entire fPapss2 5' intergenic region was carried out by monitoring expression of the enhanced green fluorescent protein (EGFP) gene reporter in the developing cartilage of transgenic Xenopus laevis. By evaluating a series of 5' intergenic region deletions we defined a minimal fPapss2 sequence of approximately 300 bp that was essential for EGFP expression in tadpole cartilage. This functional analysis of an entire Fugu intergenic region, combined with the efficiency of Xenopus transgenesis, serves as a model for the rapid characterization of evolutionarily-conserved regulatory regions of other pufferfish genes.
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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 | 0.000 | 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 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".