Journal
SCIENCE
Volume 316, Issue 5831, Pages 1625-1628Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1139816
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Funding
- NHGRI NIH HHS [R01 HG00747, R01 HG000747-16, R01 HG000747, P50-HG00750] Funding Source: Medline
- NIGMS NIH HHS [R01 GM066272] Funding Source: Medline
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Genome sequences for most metazoans and plants are incomplete because of the presence of repeated DNA in the heterochromatin. The heterochromatic regions of Drosophila melanogaster contain 20 million bases (Mb) of sequence amenable to mapping, sequence assembly, and finishing. We describe the generation of 15 Mb of finished or improved heterochromatic sequence with the use of available clone resources and assembly methods. We also constructed a bacterial artificial chromosome-based physical map that spans 13 Mb of the pericentromeric heterochromatin and a cytogenetic map that positions 11 Mb in specific chromosomal locations. We have approached a complete assembly and mapping of the nonsatellite component of Drosophila heterochromatin. The strategy we describe is also applicable to generating substantially more information about heterochromatin in other species, including humans.
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