The white gene of the tephritid fruit fly Bactrocera tryoni is characterized by a long untranslated 5' leader and a 12kb first intron.
A 300 bp fragment from exon 6 of the white gene of Bactrocera tryoni was used to screen a B. tryoni genomic library. One positive (approximately 14 kb) insert contained exons 2-6 of white by nucleotide and amino acid sequence similarity to the white genes of D. melanogaster (O'Hare et al., 1984; Pepling & Mount, 1990). Lucilia cuprina (Garcia et al., 1996). Ceratitis capitata (Zwiebel et al., 1995) and Anopheles gambiae (Besansky et al., 1995). A white 5' cDNA fragment containing exons 1, 2 and part of exon 3 was amplified, cloned and sequenced. An inverse PCR fragment of genomic DNA was generated, containing the exon 1 coding region plus approximately 2.1 kb of upstream sequence, encompassing the putative promoter of the gene. Exon 1 was found to be 728 bp long, encoding the first twenty-five amino acids. The full length of intron 1 was shown to be 12 kb (amplified using long PCR protocols), up to 3 times the length of the longest white intron 1 isolated to date.
Bennett
C L
CL
Fruit Fly Research Centre, School of Biological Sciences, University of Sydney, New South Wales, Australia.
Frommer
M
M
D018528:ATP-Binding Cassette Transporters; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics; D004175:Diptera / Q000235:genetics*; D029721:Drosophila Proteins; D005127:Eye Color / Q000235:genetics; D005136:Eye Proteins / Q000235:genetics*; D017344:Genes, Insect / Q000235:genetics*; D007438:Introns / Q000235:genetics*; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic / Q000235:genetics*; D015183:Restriction Mapping; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D014158:Transcription, Genetic / Q000235:genetics
D018528:ATP-Binding Cassette Transporters; D018076:DNA, Complementary; D029721:Drosophila Proteins; D005136:Eye Proteins; C059254:w protein, Drosophila