What is a kart file?

[efoss]

In trying to download files from SRA, I was directed to use part of the sratoolkit called "prefetch". There I came across the term "kart file":

http://www.ncbi.nlm.nih.gov/Traces/s...doc&f=prefetch

What is a kart file?

Thanks.

Eric

[GenoMax]

If you have SRA accession numbers (and all you are interested in is downloading fastq data) then use this procedure: http://seqanswers.com/forums/showpos...36&postcount=7

[efoss]

Hi GenoMax,

Thanks very much for the suggestion. I followed the instructions and they seemed to work in that the little snippet of test code worked as it should:

efoss@gizmod31:~/source_codes/sratoolkit.2.4.5-2-ubuntu64/bin$ ./fastq-dump -X 5 -Z SRR390728
Read 5 spots for SRR390728
Written 5 spots for SRR390728
@SRR390728.1 1 length=72
CATTCTTCACGTAGTTCTCGAGCCTTGGTTTTCAGCGATGGAGAATGACTTTGACAAGCTGAGAGAAGNTNC
+SRR390728.1 1 length=72
;;;;;;;;;;;;;;;;;;;;;;;;;;;9;;665142;;;;;;;;;;;;;;;;;;;;;;;;;;;;;96&&&&(
@SRR390728.2 2 length=72
AAGTAGGTCTCGTCTGTGTTTTCTACGAGCTTGTGTTCCAGCTGACCCACTCCCTGGGTGGGGGGACTGGGT
+SRR390728.2 2 length=72
;;;;;;;;;;;;;;;;;4;;;;3;393.1+4&&5&&;;;;;;;;;;;;;;;;;;;;;<9;<;;;;;464262
@SRR390728.3 3 length=72
CCAGCCTGGCCAACAGAGTGTTACCCCGTTTTTACTTATTTATTATTATTATTTTGAGACAGAGCATTGGTC
+SRR390728.3 3 length=72
-;;;8;;;;;;;,*;;';-4,44;,:&,1,4'./&19;;;;;;669;;99;;;;;-;3;2;0;+;7442&2/
@SRR390728.4 4 length=72
ATAAAATCAGGGGTGTTGGAGATGGGATGCCTATTTCTGCACACCTTGGCCTCCCAAATTGCTGGGATTACA
+SRR390728.4 4 length=72
1;;;;;;,;;4;3;38;8%&,,;)*;1;;,)/%4+,;1;;);;;;;;;4;(;1;;;;24;;;;41-444//0
@SRR390728.5 5 length=72
TTAAGAAATTTTTGCTCAAACCATGCCCTAAAGGGTTCTGTAATAAATAGGGCTGGGAAAACTGGCAAGCCA
+SRR390728.5 5 length=72
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;9445552;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;446662

However, when I went to try to download something real, it didn't work:

efoss@gizmod31:~/source_codes/sratoolkit.2.4.5-2-ubuntu64/bin$ ./fastq-dump -B SRA044886
2015-03-11T19:34:36 fastq-dump.2.4.5 err: item not found while constructing within virtual database module - the path 'SRA044886' cannot be opened as database or table
efoss@gizmod31:~/source_codes/sratoolkit.2.4.5-2-ubuntu64/bin$

This was an attempt to download fastq files that had been acquired with SOLiD, but I wanted them to download in base space. Does anyone have a suggestion to fix this? I Googled the error and found a suggestion to restore defaults with "vdv-config --restore-defaults":

https://github.com/ncbi/sra-tools/issues/7

but this didn't help.

Thanks.

Eric

[GenoMax]

You need to use abi-dump for SOLiD data.

That said the accession number you posted above is not working with abi-dump. It is not uncommon to find accession numbers that do not work. Emailing sra-techsupport can be useful in these cases.

You can also find this dataset at ENA: http://www.ebi.ac.uk/ena/data/view/SRA044886 The files say they are "fastq" but you will need to check what format they are in.

[efoss]

Hi Genomax,

Thanks very much. I really appreciate the help.

Eric

[patinfotech]

efoss asked 'What is a kart file? '

Does anyone have the answer and can you explain the format of the file and what information it contains?

[GenoMax]

Cart (.kart) files are referenced in this document http://www.ncbi.nlm.nih.gov/books/NB...efetch_command I don't see a description of the file format.