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Copyright © 1995-2006
DDBJ All rights reserved. |
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- The BASE COUNT line of the DDBJ flat file format will be changed from
DDBJ release 56 (Dec. 2003), corresponding to the relaxation of the
maximum sequence length restriction（350,000 bp/entry）in the entry that
had been practised at DDBJ/EMBL/GenBank International Nucleotide Sequence
Databases.
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- In the BASE COUNT line of the DDBJ flat file format, 6 digits had been
allocated for each number of a, c, g, t and other bases in the sequence.
Hereafter, in the new flat file format, 9 digits are allocated for each
number of a, c, g and t, while the numbers of other bases are removed.
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- In accordance with the relaxation of sequence length limitation, GenBank
had already dropped the BASE COUNT line from their flat file format from
GenBank Release 138 (Oct. 2003).
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- We DDBJ have decided to maintain the BASE COUNT line in our flat file
format from the view that GC contents are still important information
to characterize the sequence.
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- Prior to publication of release 56 in December, 2003, the new DDBJ flat
file format is adopted to daily data update from Dec. 3.
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- Following is an example of the new BASE COUNT line.
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= = = = = = = = example = = = = = = = =
1 6 11 16 21 26 31 36 41 46 51 56 61 66 71
|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
BASE COUNT 123456789 a 123456789 c 123456789 g 123456789 t
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- For detailed explanation of flat files of DDBJ format, please refer to
Guidance for Nucleotide Sequence Data Submission to DDBJ
(Guidance 10. Explanation of DDBJ flat file format)
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- If you have any questions about the change, please send an e-mail to
ddbj@ddbj.nig.ac.jp.
- Thank you very much for your understanding and cooperation.
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- DDBJ
Nov. 3. 2003
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