A constitutively active form of Mmmm\MEK1, with two amino acid replacements and a deletion of the N3 domain is cloned under the control of a heat-shock promoter.
Amino acid replacement: S218E.
Amino acid replacement: S222D.
Addition of Mmmm\MEK1ΔN3.S218E.S222D.hs does not affect survival rate of flies at 18[o]C or 22[o]C.
Heat-shock (35[o]C for 30 minutes each day) of Mmmm\MEK1ΔN3.S218E.S222D.hs increases the survival rate of flies expressing Hsap\HDQ48.ex1p.Scer\UAS in the nervous system under the control of Scer\GAL4elav-C155 at 18[o]C and 22[o]C (~10% at 22[o]C and ~5% at 18[o]C). The increase in survival rate with Mmmm\MEK1ΔN3.S218E.S222D.hs is larger at 22[o]C than at 18[o]C, suggesting that this effect depends upon the level of Mmmm\MEK1ΔN3.S218E.S222D.hs expression.