5.9kb KpnI fragment containing CYLD.
CYLDt5.9 partially rescues CYLDmr4
CYLDt5.9 largely rescues the reduction in lifespan seen in CYLDmr4 mutant adults (animals homozygous for Df(2L)CYLDmr4 and carrying P{LX107} to rescue the function of CG13138 and nmd).