Nucleotide substitution: C?T.
Amino acid replacement: Q445term.
C15050960T
C?T
Q445term | ck-PA; Q445term | ck-PB; Q445term | ck-PC; Q445term | ck-PD
Q445term
Hemizygous embryos do not have any obvious denticle morphology defects in the denticle belts. The fine hairs on the dorsal surface of the cuticle are dramatically truncated and frequently misorientated.
Apical actin aggregations in the ventral epidermal cells do not mature into the normal final denticle shape in homozygous embryos, remaining rounded even at and after 14 hours after egg laying.
Scer\GAL4e22c, ckKT9, ovosvb.UAS has denticle phenotype
Scer\GAL4e22c, ckKT9, mEP406 has denticle phenotype
ckKT9 modifies the wgl-17 denticle phenotype, such that the double mutants have denticles with a rounded appearance and no distinctive hook.
In wgl-17 ckKT9 ; pan2 triple mutants, smaller anterior denticles can have sharp points, while larger posterior denticles remain rounded and some appear fragmented.
wgl-17 ckKT9 SoxNNC14 triple mutant embryos show a dramatic reduction in denticle size and many of the denticles are fragmented into one or two short projections. Actin bundles in the epidermal cells are split into two or sometimes three separate aggregates.
wgl-12 ckKT9 double mutant embryos shifted to the restrictive temperature at 9.5 hours after egg laying (AEL) have similar cuticle patterning defects as wgl-12 single mutant embryos shifted at the same time, but in addition, many denticles remain rounded in appearance in the double mutants, particularly the large posterior denticles. The row 5 denticles are not properly elongated or hooked in double mutant embryos shifted to the restrictive temperature at 10 hours AEL.
m1 ; ckKT9 double mutants show a reduction in both size and sharpness of the denticles compared to either single mutant.
f1 ; ckKT9 double mutants show a slight reduction in both size and sharpness of the denticles compared to either single mutant.
m1 f1 ckKT9 triple mutants show almost no elongation of the denticles.
Expression of mEP406 under the control of Scer\GAL4e22c in a ckKT9 background results in a strong reduction in denticle size.
Expression of ovosvb.Scer\UAS under the control of Scer\GAL4e22c in a ckKT9 background causes a strong reduction in denticle size and results in a change in denticle morphology, while the ectopic denticles found between the denticle belts in animals expressing ovosvb.Scer\UAS under the control of Scer\GAL4e22c in a wild-type background are virtually eliminated.