TM02 / FUSION SCIENCE / MOLECULAR BIOLOGY
Histone Lactylation
New findings can expand the role of a familiar enzyme. Reliable reasoning requires integrating the newer evidence without discarding the established biology.
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Histone lactylation connects cellular metabolism and lactate availability to chromatin regulation. Its writer-and-eraser machinery is still being mapped by an active research community.
01 / CONTEXT
What the question is really testing
Histone lactylation was systematically reported in 2019 as a chromatin mark associated with gene regulation. Subsequent work has identified writer activity from p300 and HBO1, alongside eraser activity from HDAC1-3 and SIRT1-3.
HBO1 is a particularly useful test. It is historically known as an acetyltransferase, but newer research supports its ability to catalyze lysine lactylation, including H3K9 lactylation.
02 / FAILURE MODE
Why a plausible answer can still fail
A model anchored to an older canonical description may reject HBO1 because the enzyme is better known for another function.
Three single-model responses selected an incomplete writer set and omitted the newer HBO1 evidence.
03 / FUSION TRACE
How Fusion resolved the case
- Organize the question around a writer-and-eraser framework.
- Separate historical primary function from newly demonstrated catalytic capability.
- Cross-check the recent evidence for HBO1 and the de-lactylase evidence for HDAC and SIRT families.
- Return the complete set supported by the current literature.
04 / RESULT
The failures were concentrated around omission of the newer HBO1 finding.
SCIENTIFIC BOUNDARY
What this result does not claim
This case demonstrates biomedical research synthesis. It should not be framed as clinical diagnosis, treatment advice, or evidence of clinical efficacy.