lem-2
C. elegans
LEM protein 2
What the model saw
Gene: lem-2 Organism: Caenorhabditis elegans Known functions: LEM protein 2. chromatin DNA binding. lamin binding. protein binding.
View unredacted entry
LEM protein 2. chromatin DNA binding. lamin binding. protein binding.
Solver output
LEM-2 is a nuclear envelope LEM-domain protein that binds both chromatin DNA and lamins, anchoring heterochromatin to the nuclear periphery. This tethering function is critical for maintaining nuclear architecture and genome stability, as loss of nuclear lamina-chromatin interactions leads to heterochromatin disorganization, increased DNA damage, and genomic instability — all hallmarks of aging. In C. elegans, LEM-2 has been shown to contribute to nuclear integrity and genome surveillance; its lamin-binding activity links it to the nuclear lamina scaffold, disruption of which (as in laminopathies) accelerates aging phenotypes. By stabilizing peripheral heterochromatin and supporting DNA repair pathway access, LEM-2's normal function opposes the genomic instability that drives aging, placing it in a pro-longevity role.
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 correctly predicted pro_longevity for lem-2 in C. elegans. The mechanistic reasoning is well-grounded: LEM-2 is indeed a nuclear envelope protein that anchors heterochromatin to the nuclear periphery via lamin binding, and its role in maintaining nuclear architecture and genome stability is consistent with published literature. The model appropriately connects disruption of nuclear lamina-chromatin interactions to aging phenotypes (analogous to laminopathies). The reasoning is coherent and biologically plausible, though it is somewhat general and could have cited specific C. elegans studies more precisely. Confidence of 0.65 is appropriate given the specificity of the gene.
Raw API responses
solver
{
"reasoning": "LEM-2 is a nuclear envelope LEM-domain protein that binds both chromatin DNA and lamins, anchoring heterochromatin to the nuclear periphery. This tethering function is critical for maintaining nuclear architecture and genome stability, as loss of nuclear lamina-chromatin interactions leads to heterochromatin disorganization, increased DNA damage, and genomic instability — all hallmarks of aging. In C. elegans, LEM-2 has been shown to contribute to nuclear integrity and genome surveillance; its lamin-binding activity links it to the nuclear lamina scaffold, disruption of which (as in laminopathies) accelerates aging phenotypes. By stabilizing peripheral heterochromatin and supporting DNA repair pathway access, LEM-2's normal function opposes the genomic instability that drives aging, placing it in a pro-longevity role.",
"confidence": 0.65,
"key_pathways": [
"nuclear lamina-chromatin tethering",
"heterochromatin organization at nuclear periphery",
"genome integrity maintenance"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for lem-2 in C. elegans. The mechanistic reasoning is well-grounded: LEM-2 is indeed a nuclear envelope protein that anchors heterochromatin to the nuclear periphery via lamin binding, and its role in maintaining nuclear architecture and genome stability is consistent with published literature. The model appropriately connects disruption of nuclear lamina-chromatin interactions to aging phenotypes (analogous to laminopathies). The reasoning is coherent and biologically plausible, though it is somewhat general and could have cited specific C. elegans studies more precisely. Confidence of 0.65 is appropriate given the specificity of the gene.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}