Deficiency breakpoint within the zip locus.
amnioserosa (with zip2)
embryo | dorsal closure stage (with zip2)
embryonic head (with zip1)
filopodium (with zip1)
zip2/zipIIX62 embryos show a dorsal closure phenotype with a low penetrance. Time-lapse imaging shows that in affected embryos there is a decrease in the rate of closure at end stages and the distribution of F-actin in leading-edge cells is disorganized as closure progresses. Additionally, there is a failure in the structural integrity of the amnioserosa, leading-edge cells, and the junction between them.
zip1/zipIIX62 embryos exhibit dramatic defects in head involution. 58% of zip1/zipIIX62 embryos have a clear dorsal hole (i.e.- dorsal closure is incomplete). The remaining embryos complete dorsal closure, although they frequently show puckering or segment misalignments along the closed midline seam. During dorsal closure the leading edge in zip1/zipIIX62 embryos is very disporganized and extends a broader extent of lamellipodial and filopodial protrusions per unit length of leading edge than wild-type.
Embryos fail to complete dorsal closure as the mutant myosin fails to contribute sufficient myosin to drive dorsal closure to completion.
zipIIX62/zip[+] is an enhancer of visible phenotype of Scer\GAL4hs.PB, towUAS.cCa
zipIIX62 is an enhancer of visible phenotype of Hsap\HTT128Q.1-336.UAS, Scer\GAL4GMR.PU
zipIIX62/zip[+] is an enhancer of wing hair | increased number phenotype of Scer\GAL4hs.PB, towUAS.cCa
zipIIX62 is an enhancer of eye phenotype of Hsap\HTT128Q.1-336.UAS, Scer\GAL4GMR.PU
The multiple wing hair phenotype caused by expression of towScer\UAS.cCa under the control of Scer\GAL4hs.PB using heat shock at 24 hours after puparium formation is enhanced if the flies are also carrying one copy of zipIIX62.