No sequence changes detected in open reading frame; no transcript detectable from homozygotes.
Mutants show no detectable induction of Dpt, CecA1 and CecA2. Attacin levels are reduced compared to wild type and Drs induction is normal. Bacteria injected into mutant larvae show increased survival compared to those injected into wild type: 6hr after infection 4-15 times as many bacteria survive in mutants than in wild type. In adults, 24hr after infection 20-350 times as many bacteria survive in mutants than in wild type. Phenotype is similar to that shown by Rel mutants and stronger than that shown by imd mutants. A small fraction (0.5%) of embryos produced by ird51/ird52 transheterozygote mothers show weakly dorsalized phenotypes.