Arginine methylation and the cell cycle

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In cell biology, one of the most important notions to understand is condition-specific gene transcription: the idea that cells adjust the complement of genes they express based on their identity or on their needs. The way genetic information is packaged into chromatin has an immense influence on eukaryotic gene expression. It is not surprising then, that transcription factors and co-regulators work in part by precisely modulating the structure of chromatin. The covalent modification of histones, e.g. by acetylation or methylation, is a prime example of chromatin structural changes. Such histone post-translational modifications work like “marks” that can change the biophysical properties of the chromatin fiber, or serve as recognition platforms for the transcriptional machinery.