The miRNAs in a cell

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miRNAs are small, non-coding RNA molecules that are found in eukaryotic cells. They do not exist in prokaryotic cells. They do not have a direct role in the ribosome, but instead function as post-transcriptional regulators of gene expression. By binding to specific mRNA molecules, miRNAs can prevent their translation into proteins, leading to a decrease in the production of certain proteins. This allows different cells to produce different proteins, which is important for specialized cellular functions.

The MiRNAs in a Cell