Spt6 is required for heterochromatic silencing in the fission yeast Schizosaccharomyces pombe

ABSTRACT: Spt6 is a conserved factor, critically required for several transcription and chromatin related processes. We now show that Spt6 and its binding partner, Iws1, are required for heterochromatic silencing in Schizosaccharomyces pombe. Our studies demonstrate that Spt6 is required for silencing of all heterochromatic loci and that an spt6 mutant has an unusual combination of heterochromatic phenotypes compared to previously studied silencing mutants. Unexpectedly, we find normal nucleosome positioning over heterochromatin and normal levels of histone H3K9 dimethylation. However, we also find greatly reduced levels of H3K9 trimethylation, elevated levels of H3K14 acetylation, and reduced recruitment of several silencing factors. Our evidence suggests that Spt6 plays a role at both the tra

ORGANISM(S): Schizosaccharomyces pombe

SUBMITTER: Christine Kiely 

PROVIDER: E-MTAB-738 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress