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Clonally variant gene families underlie phenotypic plasticity in Plasmodium falciparum, a process indispensable for survival of the pathogen in its human host. Differential transcription of one of these gene families in clonal parasite lineages has been associated with chromatin modifications. Here, we determine the genome-wide distribution in P. falciparum of a histone mark of heterochromatin, trimethylation...
Vaccinia virus (VACV) encodes DNA polymerase and additional proteins that enable cytoplasmic replication. We confirmed the ability of VACV DNA ligase mutants to replicate and tested the hypothesis that cellular ligases compensate for loss of viral gene expression. RNA silencing of human DNA ligase I expression and a small molecule inhibitor of human DNA ligase I severely reduced replication of viral...
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