Amino acid change within the zinc finger: G387E and two other amino acid substitutions P149Q and M196I.
G15335253A
G387E | esg-PA
G387E
Amino acid change within the zinc finger: two other amino acid substitutions, P149Q and M196I, observed in mutant. Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
Heterozygous esg35Ce-3 mutant flies exhibit increased sensitivity to nicotine.
The dorsal branch fusion cells form discrete branches that never meet or join. These cells go on to form additional branches that resemble normal terminal branches in the larva. Lateral trunk fusion branches are completely missing leaving a gap in each segment of the lateral trunk.
Heterozygotes with esg05729 survive to the pharate adult stage, larval abdominal histoblasts undergo endoreplication and become polyploid preventing the development of the adult abdominal epidermis.
Many heteroallelic combinations studied. Where flies die as pharate adults sternite/tergites are partially or completely deleted and/or legs are twisted. Where flies are viable, they have held out wings, and may have sternite/tergites partially deleted and be sickly. Abdominal histoblasts were examined in heteroallelic combinations and found to have nuclei 3.4 fold times larger (revealed by Ecol\lacZ expression from esg05729 allele) and with 7-16 times as much DNA (DAPI fluorescence) as wild type histoblast nuclei. esg05729/esg35Ce-3 larvae abnormally replicate the DNA of histoblasts (BrdU incorporation). Furthermore, haematoxylin staining revealed that proliferation of histoblasts does not occur during metamorphosis of esg05729/esg35Ce-3 flies. Humeral discs in esg05729/esg35Ce-3 flies have nuclei similar in size to wild type, and differentiate normal dorsal T1 structures.
Cdk1B47, esg35Ce-3 has imaginal disc phenotype
Introduction of esghs.PF and multiple heat shocks during embryonic and larval development significantly restores the amount of adult type abdominal cuticle.
Simpson.
P. Simpson.
Induced on: l(2)CA61VS.
Strong esg allele.
Phenotypic data included in FBrf0051973.