Biology

The regulation of chromatin structure is essential for all eukaryotic organisms. Our research interests are to determine the contribution of chromatin to mechanisms that maintain genomic integrity and metabolic homeostasis in the context of disease and development. We utilize a varied experimental approach that includes computational, biochemical, molecular and cellular assays in both yeast and mammalian systems to ascertain the contribution of chromatin remodelers and histone modifiers to carcinogen susceptibility and metabolic gene expression.

By studying calcineurin, the conserved Ca2+/calmodulin-regulated protein phosphatase, we aim to discover and elucidate new Ca2+-regulated signaling pathways in humans. The calcineurin phosphatase dephosphorylates proteins only when Ca2+ signaling is triggered, for example by a hormone, growth factor, neurotransmitter etc. Previous work from the Cyert lab discovered how calcineurin allows yeast cells to survive environmental stress (Goldman et al, 2014, Molecular Cell).

The Kopito laboratory seeks a molecular understanding of how cells maintain the fidelity of their proteomes. Unlike DNA, which can be repaired if damaged or incorrectly made, proteins cannot be mended. Instead, damaged or incorrectly synthesized proteins must be rapidly and efficiently destroyed lest they form toxic aggregates.