Difference between revisions of "CSC334 Lab1"

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Retrieving a DNA sequence
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=Retrieving a Nucleotide (DNA) sequence from the NCBI database=
  
 
In this lab we retrieve a DNA sequence in FASTA format that we can use for various experiments.
 
In this lab we retrieve a DNA sequence in FASTA format that we can use for various experiments.

Revision as of 16:35, 21 July 2008

Retrieving a Nucleotide (DNA) sequence from the NCBI database

In this lab we retrieve a DNA sequence in FASTA format that we can use for various experiments.

  • Point your browser to www.ncbi.nlm.nih.gov
  • Select Nucleotide from the drop-down menu, and enter escherichia coli in the search box.
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  • Click on the first link, in our case on AB426820, and select FASTA in the display box. You should get something like this:
>gi|194306025|dbj|AB426820.1| Escherichia coli ompT mRNA for outer membrane protease T, partial cds, strain: JCM 5491
TGGGAATAGTCCTGACAACCCCTATTGCGATCAGCTCTTTTGCTTCTACCGAGACTTTATCGTTTACTCC
TGACAACATAAATGCGGACATTAGTCTTGGAACTCTGAGCGGAAAAACAAAAGAGCGTGTTTATCTAGCC 
GAAGAAGGAGGCCGAAAGGTCAGTCAACTTGACTGGAAATTCAATAACGCTGCAATTATTAAAGGTGCAA
TTAATTGGGATTTGATGCCCCAGATATCTATCGGGGCTGCTGGCTGGACAACTCTCGGTAGCCGAGGTGG  
CAATATGGTCGATCGGGACTGGATGGATTCCAGTAACCCCGGAACCTGGACGGATGAAAGTAGACACCCT 
GATACACAACTCAATTATGCCAACGAATTTGATCTGAATATCAGAGGCTGGCTCCCCAACGAACCCAATT
ACCGCCTGGGACTCATGGCCGGATATCAGGAAAGCCGTTATAGCTTTACAGCCAGAGGGGGTTCCTATAT
CTACAGTTCTGAGGAGGGATTCAGAGATGATATCGGCTCCTTCCCGAATGGAGAAAGAGCAATCGGCTAC
AAACAACGTTTTAAAATGCCCTACATTGGCTTGACTGGAAGTTATCGTTATGAAGATTTTGAGCTAGGTG
GTACATTTAAATACAGCGGCTGGGTGGAAGCATTTGATAACGATGAACACTATGACCCAGGAAAAAGAAT
CACTTATCGCAGTAAAGTCAAAGACCAAAATTACTATTCTGTTGCAGTCAATGCAGGTTATTACGTAACG
CCTAATGCAAAAGTTTATATTGAAGGCGCATGGAATCGGGTTACGAATAAAAAAGGTGATACTTCACTTT
ATGATCACAATGATAACACTTCTGACTACAGCAAAAATGGTGCAGGCATAGAAAACTATAACTTCATCAC
TACTGCTGGTC
  • That's it, you have your first FASTA sequence for a nucleotide of the E. Coli bacteria. You can store it in a text file or copy and paste it in a program or a Web form, depending on what you want to do with it.