mutator focus
A type of punctate focus localized to the perinuclear region of germline cytoplasm in C. elegans. Mutator foci are required for RNA interference (RNAi) and serve as sites of small inhibitory RNA (siRNA) amplification. As such, proteins that localize to mutator foci include RNA-directed RNA polymerases (RdRPs) and beta-nucleotidyltransferases. Mutator foci are distinct from, but adjacent to or partially overlap, P granules.
GO:0036464
cytoplasmic ribonucleoprotein granule
is_a
GO:0048471
perinuclear region of cytoplasm
part_of