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| An exploration of the sequence of a 2.9-Mb region of the genome of Drosophila melanogaster: The Adh region |
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| Author(s): Ashburner M, Misra S, Roote J, Lewis SE, Blazej R, Davis T, Doyle C, Galle R, George R, Harris N, Hartzell G, Harvey D, Hong L, Houston K, Hoskins R, Johnson G, Martin C, Moshrefi A, Palazzolo M, Reese MG, Spradling A, Tsang G, Wan K, Whitelaw K, Kimmel B, Celniker S, Rubin GM |
| Source: GENETICS Volume: 153 Issue: 1 Pages: 179-219 Published: SEP 1999 |
| Times Cited: 173 References: 261 |
| Abstract: A contiguous sequence of nearly 3 Mb from the genome of Drosophila melanogaster has been sequenced from a series of overlapping P1 and BAC clones. This region covers 69 chromosome polytene bands on chromosome arm 2L, including the genetically well-characterized "Adh region." A computational analysis of the sequence predicts 218 protein-coding genes, 11 tRNAs, and iii transposable element sequences. At least 38 of the protein-coding genes are arranged in clusters of from 2 to 6 closely related genes, suggesting extensive tandem duplication. The gene density is one protein-coding gene every 13 kb; the transposable element density is one element every 171 kb. Of 73 genes in this region identified by genetic analysis, 49 have been located on the sequence; P-element insertions have been mapped to 43 genes. Ninety-five (44%) of the known and predicted genes match a Drosophila EST, and 144 (66%) have clear similarities to proteins in other organisms. Genes known to have mutant phenotypes are more likely to be represented in cDNA libraries, and far more likely to have products similar to proteins of other organisms, than are genes with no known mutant phenotype. Over 650 chromosome aberration breakpoints map to this chromosome region, and their nonrandom distribution on the genetic map reflects variation in gene spacing on the DNA. This is the first large-scale analysis of the genome of D. melanogaster at the sequence level. In addition to the direct results obtained, this analysis has allowed us to develop and test methods that will be needed to interpret the complete sequence of the genome of this species. |
| Document Type: Review |
| Language: English |
| Reprint Address: Ashburner, M (reprint author), Univ Cambridge, Dept Genet, Downing St, Cambridge CB2 3EH, England |
Addresses:
1. Univ Cambridge, Dept Genet, Cambridge CB2 3EH, England
2. EMBL, European Bioinformat Inst, Cambridge CB10 1SD, England
3. Univ Wales Coll Med, Dept Pathol, Cardiff CF4 4XN, S Glam Wales
4. Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA
5. Carnegie Inst Washington, Howard Hughes Med Inst, Baltimore, MD USA
6. Lawrence Berkeley Lab, Berkeley Drosophila Genome Project, Berkeley, CA 94720 USA |
| Publisher: GENETICS, 428 EAST PRESTON ST, BALTIMORE, MD 21202 USA |
| Subject Category: Genetics & Heredity |
| IDS Number: 233HN |
| ISSN: 0016-6731 |
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