Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • wall_y
    Junior Member
    • May 2011
    • 7

    need help--bacterial RNA-seq

    i am a new one on this project, we are doing a bacterial transcriptome using Solid single-end no strand specific sequencing to see transcription difference between two growth conditions.

    this bacteria does not have published genome, but we have 454 and solexa sequencing result but not complete, and also have a similar bacterial (many known genes have very high similarity) genome.

    i need help on how to use tophat and cufflinks to analysis the data () using the unfinished sequencing or the similar bacterial genome as reference.

    many thanks.
  • colindaven
    Senior Member
    • Oct 2008
    • 417

    #2
    Perhaps a different approach:

    Start with the related genome.
    Map reads with bioscope, Bowtie etc
    Use Bedtools and annotation to count reads mapping to genes.
    Put read counts into either R, or a spreadsheet and do some normalisation eg RPKM and testing.
    Compare two conditions with Fishers Exact test etc.

    Comment

    • wall_y
      Junior Member
      • May 2011
      • 7

      #3
      many thanks, i would try this.


      Originally posted by colindaven View Post
      Perhaps a different approach:

      Start with the related genome.
      Map reads with bioscope, Bowtie etc
      Use Bedtools and annotation to count reads mapping to genes.
      Put read counts into either R, or a spreadsheet and do some normalisation eg RPKM and testing.
      Compare two conditions with Fishers Exact test etc.

      Comment

      • qqtwee
        Member
        • Feb 2011
        • 16

        #4
        Originally posted by colindaven View Post
        Perhaps a different approach:

        Start with the related genome.
        Map reads with bioscope, Bowtie etc
        Use Bedtools and annotation to count reads mapping to genes.
        Put read counts into either R, or a spreadsheet and do some normalisation eg RPKM and testing.
        Compare two conditions with Fishers Exact test etc.
        Hello, I am analying bacterial transcriptome using solexa paired-end strand specific (SOLiD adapter library) sequencing data, I have no idea how to deal with it. Could you give me some advice on data processing pipeline ,and which tool can I use to deal with strand specific RNA-seq? I am looking forward to your reply, thank you very much! Best wishes!

        Comment

        • swbarnes2
          Senior Member
          • May 2008
          • 910

          #5
          Originally posted by qqtwee View Post
          Hello, I am analying bacterial transcriptome using solexa paired-end strand specific (SOLiD adapter library) sequencing data, I have no idea how to deal with it. Could you give me some advice on data processing pipeline ,and which tool can I use to deal with strand specific RNA-seq? I am looking forward to your reply, thank you very much! Best wishes!
          Rule of thumb...Expect people to spend less than x amount of answering your problem, where x is the amount of time that your post demonstrates that you have spent on trying to solve it.

          From this post I expect that you have spent no time at all trying to work your problem on your own.

          Comment

          Latest Articles

          Collapse

          • SEQadmin2
            Cancer Drug Resistance: The Lingering Barrier to Rising Survival
            by SEQadmin2



            Cancer survival rates have significantly increased in the last few decades in the United States, reaching a combined 70% 5-year survival rate by 2021. Behind this number, there are years of research to find new therapies, drug targets, and early detection methods. But there is one core challenge that keeps slowing down these advances, and it’s about drug resistance.

            There is no single reason why many patients don’t respond to treatment as expected. Cancer is...
            Today, 05:17 AM
          • GATTACAT
            Reply to Nine Things a Sample Prep Scientist Thinks About Before Sequencing
            by GATTACAT
            Love this - good data definitely starts from good input, and poor input can only give relatively poor data. I particularly like the mention of Nanodrop/absorbance based methods for quantification. It's such a toss up if you'll get an accurate reading or what amounts to a randomly generated number, and a lot of library/sequencing related issues can be traced back to poor quant.
            07-01-2026, 11:43 AM
          • SEQadmin2
            Nine Things a Sample Prep Scientist Thinks About Before Sequencing
            by SEQadmin2


            I’m not a sequencing expert. I’m a purification scientist who uses NGS to evaluate workflows my group develops. With this perspective, we think about the sample first and the NGS workflow second. The sequencer is an exceptionally honest reporter, but it can only report on what you give it, so whether you get clean, interpretable data from an NGS workflow is largely determined before you begin.

            Here are nine questions we think about, in roughly the order they matter, before...
            06-18-2026, 07:11 AM

          ad_right_rmr

          Collapse

          News

          Collapse

          Topics Statistics Last Post
          Started by SEQadmin2, Today, 10:08 AM
          0 responses
          5 views
          0 reactions
          Last Post SEQadmin2  
          Started by SEQadmin2, Yesterday, 11:05 AM
          0 responses
          7 views
          0 reactions
          Last Post SEQadmin2  
          Started by SEQadmin2, 07-02-2026, 11:08 AM
          0 responses
          30 views
          0 reactions
          Last Post SEQadmin2  
          Started by SEQadmin2, 06-30-2026, 05:37 AM
          0 responses
          28 views
          0 reactions
          Last Post SEQadmin2  
          Working...