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      0371-8615 9608 傳真0371-8615 9609
      鄭州萬田生物科技有限公司
      ZHENGZHOU WANTBIO CO.,LTD
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      microRNA solexa測序數據分析
      作者:admin    發表時間:2015-09-23
      microRNA solexa測序數據分析

      MicroRNAs(miRNAs)是一種小的內源性非編碼RNA分子,大約由21-25個核苷酸組成。這些小的miRNA通常靶向一個或者多個mRNA,通過翻譯水平的抑制或斷裂靶標mRNAs而調節基因的表達

      microRNA注釋流程

       


       

      分析結果示例

       

       Part one: Length distribution

      Overview of sequence reads length distribution is represented in bar graphs.

      Unique reads: sequence tags being only one of a particular type.

      Expression levels: the number of reads for each tag which reflects relative abundance.

       


       

       Part two: Mapping reference genome

      The percentage of reads mapped to the reference genome.

       


       

       Part three: Annotation

      The classification of the large-scale short reads into known categories.

      Reads are sorted out into 5 categories.

      Non-coding RNA: sequence tags mapped to Rfam 9.1.

      microRNA: sequence tags aligned to miRBase14.

      Repeat associated: sequence tags matched RepBase14.09.

      mRNA associated: sequence tags mapped to the human genes (UCSC annotation, hg18).

      Unclassified: sequence tags aligned to reference genome but could not be mapped to any of the above categories.

       


       

       Part four: Known miRNAs

      Visual sequence alignments matched to a specific miRNA were listed in the left tabulated text files. Meanwhile, the right html tables provide detailed annotation information mainly includes:

      Absolute count: total number of sequence tags mapped to a specific microRNA.

      Relative count: normalization of matched read counts to the total number of microRNA reads and then multiplied by 10E6.

      Most abundant tag: columns are dedicated to show the most abundant tag ID with absolute/relative count and tag sequence.

       


       

       Part five: Novel miRNA

      All unclassified reads were considered for detecting candidate novel miRNAs. Sequence of novel miRNA and miRNA star along with the corresponding tag number, tag count and hairpin structure are provided.

       


       

      In addition, users can download their results by the unique job ID retrieved. Download of each relevant sub-files or as a archived results in .gz format is feasible to your prefer.


      Based on two samples

       

      Under this mode, users need to submit two samples for data input. The output pages were similar to that of single sample analysis.

       Extraordinary section: differential expression detection

      Scatter plot for display of differentially expressed miRNAs between multiple.

       


       

      Based on total tag count: differentially expressed microRNA detected between samples according to relative counts of total sequence tag of specific microRNA.

      Based on the most abundant tag: differentially expressed microRNA detected between samples according to relative counts of most abundant tag count.

      Each individual point in the scattergram corresponding to a miRNA ID. The statistical significance (P-value) was inferred based on the Bayesian method.

       

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