ins-1;rrf-3

INSulin related

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Locus: CELE_F13B12.5

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Wormbase description: ins-1 encodes an insulin-like peptide orthologous to human insulin (INS; OMIM:176730, mutated in hyperproinsulinemia and diabetes mellitus type II); INS-1 is one of 38 insulin-like peptides in C. elegans and when overexpressed can antagonize insulin-like signaling mediated by DAF-2/IR leading to arrest at the dauer larval stage; loss of INS-1, however, does not result in a dauer phenotype suggesting that INS-1 functions redundantly with other insulin-like peptides to regulate reproductive growth and lifespan; a mutation in ins-1 does, however, show severe defects in salt chemotaxis learning; INS-1 is expressed in the amphid sensory neurons ASI and ASJ that regulate dauer arrest, the nerve ring, the intestine, vulval muscles, and other neurons.

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RNA-dependent RNA polymerase Family

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Locus: CELE_F10B5.7

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Wormbase description: rrf-3 encodes an RNA-directed RNA polymerase (RdRP) homolog that inhibits somatic RNAi, and thus promotes activity of repeated genes (e.g., multicopy transgenic arrays); the effect of RRF-3 on RNAi is opposite to that of RRF-1 (which stimulates somatic RNAi), which might arise from competition by RRF-3 with RRF-1 or EGO-1 in RNAi formation; rrf-3(allele) or rrf-3(allele2) mutants are hypersensitive to somatic RNAi, and conversely suppress the activity of an integrated rol6 (su1006) transgene.

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