|  | Modification Sites | Functions | ||
---|---|---|---|---|---|
 |  | Mammals | A. thaliana | G. max |  |
Acetylation | K5 | + | + | nd | Transcriptional repression |
 | K8 | + | + | + | Transcriptional activation |
 | K12 | + | + | + | Transcriptional activation |
 | K16 | + | + | nd | Transcriptional activation |
 | K20 | nd | + | nd |  |
Methylation | K20 | + | nd | + | Heterochromatin silencing |