DSS1
S. cerevisiae
exoribonuclease II
What the model saw
Gene: DSS1 Organism: Saccharomyces cerevisiae Known functions: exoribonuclease II. 3'-5'-RNA exonuclease activity. RNA binding. RNA nuclease activity. exoribonuclease II activity. protein binding.
View unredacted entry
exoribonuclease II. 3'-5'-RNA exonuclease activity. RNA binding. RNA nuclease activity. exoribonuclease II activity. protein binding.
Solver output
DSS1 in S. cerevisiae encodes an exoribonuclease II (3'-to-5' RNA exonuclease), which is a core component of the RNA exosome complex responsible for RNA surveillance and degradation. This activity is essential for the quality control of aberrant RNAs, including misprocessed mRNAs and non-coding RNAs, thereby maintaining transcriptome fidelity. Proper RNA surveillance prevents the accumulation of defective transcripts that could be translated into aberrant proteins, directly supporting proteostasis. Loss of 3'-5' RNA exonuclease activity leads to accumulation of RNA processing intermediates and cryptic unstable transcripts, which can impose cellular stress and compromise protein quality. By ensuring clean RNA turnover, DSS1/exoribonuclease II activity supports the broader proteostasis network and reduces cellular burden associated with aging.
GenAge curators classify each gene's normal function as promoting (Pro-Longevity) or opposing (Anti-Longevity) longevity, based on synthesis across studies. Loss-of-function effects can vary from this depending on the manipulation.
Advisor judgment
The model predicted pro_longevity but the ground truth is anti_longevity. DSS1 in S. cerevisiae is an anti-longevity gene, meaning its deletion or loss of function extends lifespan. The model reasoned that DSS1's RNA exonuclease activity supports proteostasis and RNA quality control, which would make it pro-longevity. However, the actual finding is that DSS1 is anti-longevity — its activity shortens lifespan rather than extending it. The mechanistic reasoning about RNA surveillance and proteostasis is plausible in general terms but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still wrong on both the answer and the direction of the mechanism.
Raw API responses
solver
{
"reasoning": "DSS1 in S. cerevisiae encodes an exoribonuclease II (3'-to-5' RNA exonuclease), which is a core component of the RNA exosome complex responsible for RNA surveillance and degradation. This activity is essential for the quality control of aberrant RNAs, including misprocessed mRNAs and non-coding RNAs, thereby maintaining transcriptome fidelity. Proper RNA surveillance prevents the accumulation of defective transcripts that could be translated into aberrant proteins, directly supporting proteostasis. Loss of 3'-5' RNA exonuclease activity leads to accumulation of RNA processing intermediates and cryptic unstable transcripts, which can impose cellular stress and compromise protein quality. By ensuring clean RNA turnover, DSS1/exoribonuclease II activity supports the broader proteostasis network and reduces cellular burden associated with aging.",
"confidence": 0.62,
"key_pathways": [
"RNA exosome-mediated RNA surveillance",
"3'-5' RNA degradation and quality control",
"proteostasis via transcriptome fidelity"
],
"mechanism_class": "loss_of_proteostasis",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted pro_longevity but the ground truth is anti_longevity. DSS1 in S. cerevisiae is an anti-longevity gene, meaning its deletion or loss of function extends lifespan. The model reasoned that DSS1's RNA exonuclease activity supports proteostasis and RNA quality control, which would make it pro-longevity. However, the actual finding is that DSS1 is anti-longevity — its activity shortens lifespan rather than extending it. The mechanistic reasoning about RNA surveillance and proteostasis is plausible in general terms but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still wrong on both the answer and the direction of the mechanism.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}