Dpuiu at 19:55, 8 August 2007

2007-08-08T19:55:46Z

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Center: Baylor
Status: Complete

Assembly locations:
/fs/szasmg/Bacteria/F_tularensis_holarctica_OSU18/

Final assembly steps:
1. The complete genome sequence was downloaded from NCBI: NC_008369.1
2. Reads were downloaded from TA and formatted using tarchive2ca
3. There are 2 Sanger libraries for this project
BFTBP: #reads=58051 , insert_mean=2000, insert_stdev=666
BFTDP: #reads=10409 , insert_mean=2000, insert_stdev=666
4. The reads have been retrimmed using veraTrim (-T 10 -M 100 -E 500)
5. runCA-OBT.pl has been used to assemble all the reads
location: 2007_0724_WGA-default/
=>160 scaff, 163 contigs, 23X coverage
6. The library sizes were updates using the WGA estimates
BFTBP: insert_mean=2690.042, insert_stdev=643.126
BFTDP: insert_mean=3675.914, insert_stdev=1225
7. The WGA was aligned to the reference using nucmer; one rearrangement, one
deletion and several SNP's were noticed
8. The reads were assembled using AMOScmp (default parameters)
location: 2007_0724_AMOSCMP-default/
=> 1 scaffold, 22 contigs
2 missoriented read pile regions were noticed
9. The assembly was aligned to itself; 950 bp inverted repeats were identified as
flanking the problem regions; the coordinates are:
16336-21562 (5 KB)
167086-184936 (17 KB)
10. The 2 regions were flipped ; the new reference is called NC_008369.2
11. Several small contig (step 8) read clear ranges have been extend to their OBT
trimming points
12. AMOScmp was rerun using more relaxed parameters:
nucmer MINCLUSTER=30
casm-layout MAXTRIM=50
location: 2007_0731_AMOSCMP-veraTrim-updateDst-relaxed-updateClr-fixRef2->best
=> 1 scaffold, 8 contigs

Final assembly location:
/fs/szasmg/Bacteria/F_tularensis_holarctica_OSU18/best

F tularensis holarctica OSU18 - Revision history

Dpuiu at 19:55, 8 August 2007