Story perspectives

Ants Unveil Unique Gene Mechanism for Smell

10/23/2025

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Summary

Story summary

Harpegnathos saltator ants express only one olfactory receptor gene per sensory neuron by activating a single promoter within an Or gene array.
The process produces a mature mRNA while suppressing downstream genes through transcriptional readthrough and antisense transcription.
This mechanism enforces the long-standing 'one receptor per neuron' rule.
The study highlights transcriptional interference as an evolutionary innovation, with implications for synthetic biology and sensory biology.

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Story summary

Harpegnathos saltator ants express only one olfactory receptor gene per sensory neuron by activating a single promoter within an Or gene array.
The process produces a mature mRNA while suppressing downstream genes through transcriptional readthrough and antisense transcription.
This mechanism enforces the long-standing 'one receptor per neuron' rule.
The study highlights transcriptional interference as an evolutionary innovation, with implications for synthetic biology and sensory biology.