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Small Non-Coding RNAs

Meaning

Small Non-Coding RNAs ($text{sncRNAs}$) are a diverse class of functional RNA molecules that do not encode proteins but instead play crucial regulatory roles in gene expression, particularly at the post-transcriptional level. MicroRNAs ($text{miRNAs}$) and small interfering RNAs ($text{siRNAs}$) are prominent examples that influence numerous cellular processes, including hormonal signaling, metabolic homeostasis, and cell differentiation. Their precise modulation of gene activity is vital for maintaining cellular integrity and preventing disease.