Sa. Shestopal et al., MOLECULAR CHARACTERIZATION OF THE DEEP ORANGE (DOR) GENE OF DROSOPHILA-MELANOGASTER, MGG. Molecular & general genetics, 253(5), 1997, pp. 642-648
Mutations of the dor gene of Drosophila melanogaster cause defects in
different stages of development. Heterozygotes for lethal or viable do
r alleles and the rearrangement T(1;2)dor(var7), which causes position
effect variegation of dor, exhibit traits such as rough eyes, reducti
on of bristles on the thorax and scutellum and wavy wings. The dor gen
e was mapped to the proximal part of the 2B3-5 band or in the interban
d between 2B3-5 and 2B6 and localised within an interval of 5 kb on th
e physical map of the cloned 2B region. The 3.0-3.1 kb dor transcript
was detected by Northern hybridization at all stages of development an
d is expressed in salivary glands of third instar larve. This RNA was
not expressed in the for mutants with insertions in the 5' part of the
gene. The sequence of the 3180 bp dor cDNA predicts a 115.3 kDa prote
in that contains a cysteine- and histidine-rich zinc finger-like motif
CX(2)CX(13)CXHX(2)HX(2)CX(2)H at the C-terminus. The protein sequence
reveals 23% identity to the Saccharomyces cerevisiae PEP3 protein. Th
e most significant homology (57% similarity and 32% identity) between
the DOR and PEP3 proteins is observed at the C-termini of the proteins
.