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About miRFocus

miRFocus: the human miRNA information database

MicroRNAs (miRNAs) are short regulatory ribonucleic acid (RNA) molecules, which consist of about 20-23 nucleotides and are found in all eukaryotic cells. miRNAs play important roles as translational and post-transcriptional regulators by binding to complementary sequences of the target messenger RNA transcripts (mRNAs), such interactions usually resulting in translational repression due to gene silencing. miRFocus intends to help miRNA researchers save valuable time in information mining once miRNA data are obtained by providing leads for in-depth analysis of miRNA-target gene pathways and the related miRNA annotations.

News - miRFocus Version 3

The current version : miRFocus 3
Update Time: Oct 2014
Pre-miRNAs and mature miRNAs name are from miRBase Version 21
Link to miRFocus old version:
   Version 2.1 (Based on miRBase Version 20)
   Version 2.0 (Based on miRBase Version 19)
   Version 1.3 (Based on miRBase Version 17)

miRFocus Statistics

Mature miRNA
Target Gene
miRNA related Article
Sequence Family
Postion Cluster
Function Cluster

Human microRNAs Search


1. Select miRNA(s) from the following list:

1881 human pre-microRNAs, 2588 human mature microRNAs (Version 21)


























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































2. Type miRNA(s) in the space below:

  (Click here for an example)

3. Upload a file

 (Click here for an example)

4. Search for miRNA(s) by validated target gene(s)

  (Offical Gene Symbol, Click here for an example):

5. Enter RNA sequence(s) in the space below:

 (≥8 amino acids)  (Click here for an example)

Please send questions and comments to Contact email.
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