Amino acid replacement: W205term.
Mutation truncates the protein before the ion transporter domain.
G17343915A
G?A
W205term | brv2-PA; W183term | brv2-PB
W205term
TGG to TAG nonsense mutation in codon W205, 754 bases from the start codon.
brv2W205STOP homozygotes and brv2W205STOP/Df(3L)Exel6131 animals show a dramatic deficit in their aversion to cold temperatures compared to wild type flies.
Cold-evoked calcium transients of brv1-expressing cells are severely decreased in brv2W205STOP animals.
brv2W205STOP is rescued by brv2+t4
Introduction of brv2+t4 into the brv2W205STOP background completely restores normal temperature preference to the mutant flies.