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Regulating the nuclear architecture of the cell

The study reveals two molecular pathways controlling the organization of the nucleolus, a critical organelle that manufactures ribosomes, and heterochromatin, which mediates gene silencing. These findings have implications for understanding genome stability and its relation to human disorders like birth defects and cancer.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Cell Biology·DateDec 10, 2006

Heterochromatin assembly in S. pombe

Researchers have discovered a cullin-dependent E3 ligase as a crucial component of the Clr4 methyltransferase complex, controlling histone methylation and heterochromatin assembly. The study suggests that polyubiquitylation of regulatory proteins may play a key role in regulating these processes.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJul 14, 2005