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How eukaryotic chromosomes fold inside the nucleus is an age-old question that remains unanswered today. Early biochemical and microscopic studies revealed the existence of chromatin domains and loops as a pervasive feature of interphase chromosomes, but the biological implications of such organizational features were obscure. Genome-wide analysis of pair-wise chromatin interactions using chromatin...
Reversible phosphorylation is the cell’s most prevalent form of posttranslational modification, yet its role in the regulation of mitochondrial functions is poorly understood. We have discovered that a member of the dual-specific protein tyrosine phosphatase (DS-PTP) family, PTPMT1 (PTP localized to the Mitochondrion 1) resides nearly exclusively in mitochondria. PTPMT1 is targeted to the mitochondrion...
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