Retraction Note to: A cytosolic catalase is needed to extend adult lifespan in C. elegans daf-C and clk-1 mutants

Nature 399, 162–166 (1999). We no longer have confidence in our observations associating a reduction in adult lifespan with a putative mutation in the Caenorhabditis elegans catalase gene ctl-1 and therefore retract this paper. With the assistance of J. Liang and C. Keller, we have confirmed that C.elegans has multiple catalase genes (actually three in tandem) and that the original strain, TU1061, has decreased transcription of ctl-1 messenger RNA.