mcm-2

C. elegans

DNA replication licensing factor MCM2

What the model saw

Gene: mcm-2
Organism: Caenorhabditis elegans
Known functions: DNA replication licensing factor MCM2. 3'-5' DNA helicase activity. ATP binding. DNA binding. DNA helicase activity. single-stranded DNA binding. single-stranded DNA helicase activity.

View unredacted entry

DNA replication licensing factor MCM2. 3'-5' DNA helicase activity. ATP binding. DNA binding. DNA helicase activity. single-stranded DNA binding. single-stranded DNA helicase activity.

Solver output

Predicted influence

Pro-longevity

Confidence

72%

Mechanism

Genomic instability

Reasoning

MCM2 is a core subunit of the MCM2-7 replicative helicase complex, which is essential for DNA replication licensing and origin firing. Its 3'-5' DNA helicase and single-stranded DNA binding activities are required for faithful genome duplication during S phase. Proper MCM2 function ensures complete and accurate DNA replication, thereby preventing replication stress, fork collapse, and the accumulation of DNA damage — all major drivers of genomic instability. In C. elegans, loss of replication fidelity accelerates aging phenotypes and reduces lifespan, while maintaining genome integrity is a hallmark of longevity. Thus, the normal function of mcm-2 in licensing and unwinding DNA at replication forks acts to suppress genomic instability, supporting organismal longevity.

Key pathways

DNA replication licensing (MCM2-7 helicase complex)replication fork progression and genome integrity maintenanceDNA damage prevention via replication fidelity

Longevity influence

Unclear

Lifespan effect

Increase and Decrease

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

Answer

✗Incorrect

Mechanism

✗Incorrect

Reasoning quality

2/5

Failure mode

Confident wrong

Notes

The ground truth is "unclear" but the model predicted "pro_longevity" with 0.72 confidence. The model constructed a plausible-sounding mechanistic argument (MCM2 maintains genome integrity → prevents aging), but this is speculative reasoning not supported by actual experimental evidence in C. elegans. The ground truth indicates the longevity influence is unclear, meaning there is insufficient or conflicting evidence to assign a direction. The model should have recognized the uncertainty given that MCM2 is primarily known as an essential replication factor without clear longevity phenotype data, and should have predicted "unclear" or expressed much lower confidence. The confident assignment of "pro_longevity" is incorrect.

Raw API responses

solver

{
  "reasoning": "MCM2 is a core subunit of the MCM2-7 replicative helicase complex, which is essential for DNA replication licensing and origin firing. Its 3'-5' DNA helicase and single-stranded DNA binding activities are required for faithful genome duplication during S phase. Proper MCM2 function ensures complete and accurate DNA replication, thereby preventing replication stress, fork collapse, and the accumulation of DNA damage — all major drivers of genomic instability. In C. elegans, loss of replication fidelity accelerates aging phenotypes and reduces lifespan, while maintaining genome integrity is a hallmark of longevity. Thus, the normal function of mcm-2 in licensing and unwinding DNA at replication forks acts to suppress genomic instability, supporting organismal longevity.",
  "confidence": 0.72,
  "key_pathways": [
    "DNA replication licensing (MCM2-7 helicase complex)",
    "replication fork progression and genome integrity maintenance",
    "DNA damage prevention via replication fidelity"
  ],
  "mechanism_class": "genomic_instability",
  "longevity_influence": "pro_longevity"
}

advisor

{
  "notes": "The ground truth is \"unclear\" but the model predicted \"pro_longevity\" with 0.72 confidence. The model constructed a plausible-sounding mechanistic argument (MCM2 maintains genome integrity → prevents aging), but this is speculative reasoning not supported by actual experimental evidence in C. elegans. The ground truth indicates the longevity influence is unclear, meaning there is insufficient or conflicting evidence to assign a direction. The model should have recognized the uncertainty given that MCM2 is primarily known as an essential replication factor without clear longevity phenotype data, and should have predicted \"unclear\" or expressed much lower confidence. The confident assignment of \"pro_longevity\" is incorrect.",
  "failure_mode": "confident_wrong",
  "answer_correct": false,
  "mechanism_correct": false,
  "reasoning_quality": 2,
  "ground_truth_questionable": false
}