CTH1
S. cerevisiae
putative mRNA-binding protein CTH1
What the model saw
Gene: CTH1 Organism: Saccharomyces cerevisiae Known functions: putative mRNA-binding protein CTH1. mRNA binding. metal ion binding. zinc ion binding.
View unredacted entry
putative mRNA-binding protein CTH1. mRNA binding. metal ion binding. zinc ion binding.
Solver output
CTH1 is a yeast member of the TIS11/CCCH tandem zinc finger family of mRNA-binding proteins, closely related to TIS11/Tis11p (Cth2p). These proteins bind AU-rich elements (AREs) in the 3' UTR of target mRNAs and promote their degradation, thereby post-transcriptionally regulating gene expression programs—particularly those involved in iron homeostasis and metabolic adaptation under iron-limiting conditions. By destabilizing mRNAs encoding iron-consuming processes, CTH1/CTH2 help cells reallocate iron to essential functions, supporting mitochondrial function and metabolic efficiency. Proper iron homeostasis is critical for avoiding mitochondrial dysfunction and oxidative stress, both of which are drivers of aging. Loss of this regulatory capacity could lead to iron misallocation, increased ROS, and accelerated aging, suggesting CTH1's normal function is broadly pro-longevity. However, CTH1's role is partially redundant with CTH2 and its specific longevity contribution is not well-established, moderating confidence.
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. The model's reasoning about CTH1's role in iron homeostasis and mRNA decay is mechanistically plausible in general terms, but it incorrectly concludes that this function would be pro-longevity. In reality, CTH1 is anti-longevity in yeast, meaning its deletion extends lifespan. The model's logic that "loss of this regulatory capacity could lead to iron misallocation, increased ROS, and accelerated aging" is inverted from the actual experimental finding. The model did express low confidence (0.52), which is appropriate given uncertainty, but still landed on the wrong answer. The mechanism class of "altered_intercellular_communication" is also poorly chosen for what is fundamentally an mRNA stability/post-transcriptional regulation mechanism.
Raw API responses
solver
{
"reasoning": "CTH1 is a yeast member of the TIS11/CCCH tandem zinc finger family of mRNA-binding proteins, closely related to TIS11/Tis11p (Cth2p). These proteins bind AU-rich elements (AREs) in the 3' UTR of target mRNAs and promote their degradation, thereby post-transcriptionally regulating gene expression programs—particularly those involved in iron homeostasis and metabolic adaptation under iron-limiting conditions. By destabilizing mRNAs encoding iron-consuming processes, CTH1/CTH2 help cells reallocate iron to essential functions, supporting mitochondrial function and metabolic efficiency. Proper iron homeostasis is critical for avoiding mitochondrial dysfunction and oxidative stress, both of which are drivers of aging. Loss of this regulatory capacity could lead to iron misallocation, increased ROS, and accelerated aging, suggesting CTH1's normal function is broadly pro-longevity. However, CTH1's role is partially redundant with CTH2 and its specific longevity contribution is not well-established, moderating confidence.",
"confidence": 0.52,
"key_pathways": [
"mRNA decay via ARE-binding / post-transcriptional regulation",
"iron homeostasis and iron-sparing response",
"mitochondrial function and oxidative stress prevention"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted pro_longevity but the ground truth is anti_longevity. The model's reasoning about CTH1's role in iron homeostasis and mRNA decay is mechanistically plausible in general terms, but it incorrectly concludes that this function would be pro-longevity. In reality, CTH1 is anti-longevity in yeast, meaning its deletion extends lifespan. The model's logic that \"loss of this regulatory capacity could lead to iron misallocation, increased ROS, and accelerated aging\" is inverted from the actual experimental finding. The model did express low confidence (0.52), which is appropriate given uncertainty, but still landed on the wrong answer. The mechanism class of \"altered_intercellular_communication\" is also poorly chosen for what is fundamentally an mRNA stability/post-transcriptional regulation mechanism.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}