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Related Concept Videos

MicroRNAs01:22

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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
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RNA Interference01:23

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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mirMachine: A One-Stop Shop for Plant miRNA Annotation
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Seq and CLIP through the miRNA world.

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    High-throughput sequencing identified novel microRNA (miRNA) binding sites and targets with unusual functions. This method also enables quantitative modeling of miRNA-target interaction strength, advancing RNA biology research.

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    Area of Science:

    • Molecular Biology
    • Genomics
    • Bioinformatics

    Background:

    • MicroRNAs (miRNAs) are key regulators of gene expression.
    • Understanding miRNA binding and function is crucial for deciphering cellular processes.
    • Current methods may not capture the full spectrum of miRNA interactions.

    Purpose of the Study:

    • To identify atypical microRNA binding sites and targets using high-throughput sequencing.
    • To characterize the functions of these newly identified miRNA targets.
    • To develop quantitative models for miRNA-target interaction strength.

    Main Methods:

    • High-throughput sequencing of RNAs crosslinked to Argonaute proteins (CLIP-Seq).
    • Bioinformatic analysis to identify miRNA binding sites and targets.
    • Functional enrichment analysis of identified targets.

    Main Results:

    • Discovery of numerous atypical miRNA binding sites.
    • Identification of miRNA targets with previously unrecognized functions.
    • Development of a quantitative model to predict miRNA-target interaction strength.

    Conclusions:

    • High-throughput sequencing of Argonaute-crosslinked RNAs is a powerful tool for comprehensive miRNA research.
    • This approach expands our understanding of miRNA regulatory networks and functions.
    • Quantitative models derived from this method can predict miRNA efficacy.