My research focuses on disease relevant protein complexes and protein-DNA complexes in epigenetics and RNA epeignetics. Epigenetics is the study of acquired changes in chromatin structure that arise independently of a change in the underlying DNA nucleotide sequence. Modificatoins of DNA, histone and RNA regulate the eukaryotic gene expression at different layers. Abnormal regulation of gene expression lead to a number of diseases including cancer, autoimmune and neurodegenerative diseases. We utilize structural biology, molecular biology and chemical biology to explore the molecular mechanism underlining the complicated regulatory mechanisms and to identify small molecules to treat human diseases.