H3K27me3 / H3K4me3
Two chemical modifications of histone H3. H3K27me3 closes chromatin and silences genes; H3K4me3 opens chromatin and activates transcription. Their balance drifts with age.
Two chemical modifications of histone H3. H3K27me3 closes chromatin and silences genes; H3K4me3 opens chromatin and activates transcription. Their balance drifts with age.
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