By Gustavo Maroni
Drosophila, the typical fruit fly, is the main widely studied of all organisms from the perspective of genetics and cytology. This atlas summarizes what's identified in regards to the nearly a hundred Drosophila genes for which the full nucleotide series is understood. each one access features a description of the gene's molecular association and expression, the entire nucleotide and amino acid sequences, maps of fascinating buildings, highlights of useful good points and promoter regulatory areas, and chosen references to the first literature. A separate portion of the atlas considers varied points of gene association as they ensue within the Drosophila genome. themes coated contain measurement correlations between a variety of genetic parts, splicing signs, translation initiation indications, and codon bias. The paintings represents a brand new milestone in summarizing present info and making it simply obtainable to geneticists and biologists.
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Extra resources for An Atlas of Drosophila Genes: Sequences and Molecular Features
Place, A. , Pentz, E. and Sofer, W. (1985). UGA nonsense mutation in the alcohol dehydrogenase gene of Drosophila melanogaster. J. Mol. Biol. 184:221-230. , Leister, F. and Sofer, W. (1975). Chemical selection of mutants that affect alcohol dehydrogenase in Drosophila. II. Use of l-pentyne-3-ol. Genetics 79:73-83. Place, A. , Benyajati, C. and Sofer, W. (1987). Molecular consequences of two formaldehyde-induced mutations in the alcohol dehydrogenase gene of Drosophila melanogaster. Biochem. Genet.
Developmental Pattern Transcription is undetectable in embryos (Tobin et al. 1990), it increases during the first larval instar, peaks during the second instar and diminishes in the third instar and in prepupae. Another small burst of transcription occurs during pupation (Sanchez et al. 1983). Studies of transcript distribution and the pattern of expression of a reporter gene controlled by 4 kb of the Act79B promoter region showed that transcription starts in midpupae (at 168 h) and continues 30 AN ATLAS OF DROSOPHILA GENES The Actin Genes: ActSC, Act42A, Act57B, Act79B, Act87E, Act88F 31 in young adults.
Three major and two minor alternative poly-A sites exist, and it is probable that all possible combinations of initiation and polyadenylation sites are used. The major classes of mRNAs would range from 1,524 to 1,919 bases. 3 kb long (Fyrberg et al. 1981; Bond and Davidson 1986; Vigoreaux and Tobin 1987; Chung and Keller 1990a). Developmental Pattern The gene for the cytoplasmic actin 5C is, as would be expected, transcribed in all tissues. Its maternal mRNA is uniformly distributed in preblastoderm embryos.