Assertion: lysine | /r/HasProperty | 4 tri-methylation
Facets:
Source sentences:
text: Two of the most studied lysine methylations at promoters are histone H3 lysine 4 tri-methylation (H3K4me3) and H3 lysine 27 tri-methylation (H3K27me3), which generally represent active and repressed transcriptional states, respectively.