Amino acid replacement: V531D.
A single amino change in the DH domain of pblΔN-term.UAS.Tag:HA compromises its catalytic activity.
Scer\GAL4e22c-mediated expression of pblΔN-term-V531D.Scer\UAS.T:Ivir\HA1 results in 0.9% embryonic lethality with 0% of embryos showing some loss of naked cuticle on the ventral side.
Expression of pblΔN-term-V531D.Scer\UAS.T:Ivir\HA1 in the mesoderm under the control of the Scer\GAL4twi.2PE and Scer\GAL4Mef2.PR drivers does not produce any mesodermal invagination or migration defects.