Amino acid replacement: V42D.
T14259717A
V42D | MetRS-m-PA; V42D | MetRS-m-PB; V42D | MetRS-m-PC
V42D
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
abnormal neurophysiology | adult stage | somatic clone | conditional (with MetRS-mFB)
flightless (with MetRS-mFB)
short lived (with MetRS-mFB)
mitochondrion (with MetRS-mFB)
pigment cell (with MetRS-mFB)
1 day old flies containing large clones of homozygous tissue in the eye have an electroretinogram (ERG) with a significantly reduced amplitude compared to wild type. The ERG amplitude decreases as the flies age.
Aats-metHV/Aats-metFB adult escapers have normal ERGs at 1 day old, while the ERG is severely abnormal in 3 week old flies. The rhabdomeres and overall structure of the photoreceptors appears normal, with the correct number of photoreceptors per ommatidium in 1 day old flies. The total mitochondrial area in the mutant photoreceptors is greater than normal in 1 day and 1 week old flies. Lipid droplets are present in the pigment cells in mutant flies, a phenotype not seen in wild type. The photoreceptors and glial cells progressively degenerate, such that by 3 weeks of age, most photoreceptors are severely affected and many organelles are barely recognisable.
Homozygous and Aats-metHV/Aats-metFB flies have shorter lifespans than normal and are unable to fly.
The myofibrils of the indirect flight muscles appear intact in 1 day old Aats-metHV/Aats-metFB flies, but the mitochondria are clearly abnormal, being larger than normal. The myofibrils show defects in 1 week old flies and the mitochondria are very large.
Aats-metHV/Df(3R)Exel7321 animals die as late third instar larvae or small pupae, and have small imaginal discs and larval brains.
MetRS-mHV/Df(3R)Exel7321 has lethal phenotype, suppressible by Scer\GAL4Act5C.PU/Hsap\MARS2UAS.cBa
Expression of Hsap\MARS2Scer\UAS.cBa under the control of Scer\GAL4Act5C.PU rescues the lethality of Aats-metHV/Df(3R)Exel7321 flies.
MetRS-mHV/Df(3R)Exel7321 is rescued by Scer\GAL4Act5C.PU/MetRS-mUAS.cBa