Skip to main content
. 2014 Nov 14;43(Database issue):D690–D697. doi: 10.1093/nar/gku1099

Table 2. Detailed information on the BDGP D. melanogaster Release 6 genome assembly.

Scaffold Length (bp) Sized gaps Total gap size (bp) Unsized gaps Accessions (GenBank, RefSeq) Comments
Chromosome arm scaffolds
X 23 542 271 4 65 520 6 AE014298.5 • Net gain of 0.9 Mb compared to R5 X plus R5 XHet: most at scaffold end.
NC_004354.4 • Central 15.4 Mb unchanged:
R5:X:4,684,794..20,073,489 maps to R6:X:4,790,761..20,179,456.
• About 104 kb of new sequence added at scaffold start (14 kb from R5 U).
• 1 Mb of new sequence added near scaffold end, including 209 kb and 204 kb from R5 scaffolds U and XHet, respectively.
2L 23 513 712 0 0 2 AE014134.6 • Net gain of 133 kb compared to R5 2L plus R5 2LHet: all at scaffold end.
NT_033779.5 • Initial 21.5 Mb unchanged:
R5:2L:1..21,485,538 maps to R6:2L:1..21,485,538.
• New sequence at the end includes 293 kb and 40 kb from R5 scaffolds 2LHet and U, respectively.
2R 25 286 936 1 6600 7 AE013599.5 • Net gain of 0.9 Mb compared to R5 2R plus R5 2RHet: most at scaffold start.
NT_033778.4 • Central 16.7 Mb unchanged:
R5:2R:3,036..16,668,212 maps to R6:2R:4,115,531..20,780,707.
• New sequence at the start includes 2.3 Mb and 987 kb from R5 scaffolds 2RHet and U, respectively.
3L 28 110 227 4 117 660 5 AE014296.5 • Net gain of 1.0 Mb compared to R5 3L plus R5 3L Het: all at scaffold end.
NT_037436.4 • Initial 24.5 Mb unchanged, except an unsized gap is now sized at 7kb:
R5:3L:1..24,523,740 maps to R6:3L:1..24,530,640.
• New sequence at the end includes 2.3 Mb, 328 kb and 150 kb from R5 scaffolds 3LHet, 2RHet and U, respectively.
3R 32 079 331 9 22 772 18 AE014297.3 • Net gain of 1.7 Mb compared to R5 3R plus R5 3RHet: all at scaffold start.
NT_033777.3 • Last 27.9 Mb of unchanged:
R5:3R:1..27,905,053 maps to R6:3R:4,174,278..32,079,331.
• New sequence at the end includes 2.2 Mb and 1.0 Mb from R5 scaffolds 3RHet and U, respectively.
4 1 348 131 1 17 000 0 AE014135.4 • Net loss of 3.7 kb compared to R5 scaffold 4.
NC_004353.4 • Replacement of R5 scaffold start:
24.1 kb of sequence removed (some moved to R6 3R, X and Y) and replaced with 3.4 kb from the R5 scaffold U.
• Change in start of R6 scaffold 4 completes the JYalpha gene annotation.
• The remaining sequence is unchanged, but the unsized gap in R5 is now sized at 17kb.
Y 3 667 352 61 242 633 150 CP007106.1 • Net gain of 3.3 Mb compared to R5 YHet: over a 10-fold increase.
NC_024512.1 • 232.3 kb carried over from R5 scaffold YHet.
• New sequence includes 702.5 kb and 84.2 kb from R5 scaffolds U and 3LHet, respectively.
Mitochondrial scaffold
M 19 524 0 0 0 KJ947872.2 • Derived from iso-1 reference strain.
NC_024511.2
Minor unordered scaffold groups (number of scaffolds per group)
Comments on scaffold group
X (446) 1 005 345 26 72 915 0 • Chromosome X mapped.
2CEN (28) 222 873 20 60 073 1 • Chromosome 2 centromere-proximal region.
3CEN (144) 729 966 26 41 429 10 • Chromosome 3 centromere-proximal region.
Y (199) 860 223 39 63 081 24 • Chromosome Y mapped.
XY (66) 209 541 4 806 1 • Scaffolds map to both X and Y chromosomes.
rDNA (1) 76 973 2 16 500 0 • Ribosomal DNA (RefSeq, NW_007931121.1).
unmapped (978) 3 053 597 139 402 989 11 • Unmapped. Now represented by separate scaffolds instead of a concatenated pseudoscaffold.
• Net loss of 7.0 Mb, compared to R5 U, due to movement of sequences to chromosome arms or to mapped minor scaffold groups.