Histone H3 lysine-to-methionine mutants as a paradigm to study chromatin signaling

Histone proteins form the core packaging material for our genomic DNA, and covalent modifications to amino acid residues in their structure play an important role in the epigenetic control of gene expression. Herz et al. show that specific mutations in the residues that are normally modified to regulate expression cause severe disruption of normal development in the fruit fly. Similar mutations are known to be involved in a subtype of aggressive pediatric brain cancers. Insights into the epigenetic regulatory pathways disrupted by these mutations in Drosophila may suggest possible treatments for human cancers. Science , this issue p. [1065][1] [1]: /lookup/doi/10.1126/science.1255104