sid-1 encodes a dsRNA channel with conserved human (OMIM:606816) and mouse homologs; SID-1 functions to enable passive (ATP-independent) uptake of double-stranded RNA (dsRNA) and is required cell autonomously for systemic RNA interference (RNAi) and for efficient reduction of multicopy transgene expression (repeat-induced silencing); SID-1 is not, however, required for export of RNA silencing from C. elegans tissues; a SID-1::GFP fusion is enriched at cellular membranes of most nonneuronal cells from late embryogenesis through adulthood with highest levels detected in cells exposed to the environment; SID-1 extracellular domain (ECD) selectively binds long double-stranded RNA (dsRNA) and the binding affinity is related to RNA transport efficiency.
Enables RNA transmembrane transporter activity and double-stranded RNA binding activity. Involved in dsRNA transport and regulatory ncRNA-mediated post-transcriptional gene silencing. Located in plasma membrane. Expressed in several structures, including pharynx.
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.