SMALL NUCLEOLAR RNA Meaning and
Definition
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Small nucleolar RNAs (snoRNAs) are a class of small non-coding RNA molecules found in eukaryotic cells. They primarily reside in the nucleolus, a subcompartment of the cell nucleus, and play a crucial role in the modification and processing of other RNA molecules.
The main function of snoRNAs is to guide chemical modifications to ribosomal RNA (rRNA) and transfer RNA (tRNA), which are essential for their maturation and optimal function. SnoRNAs base-pair with specific regions of rRNA or tRNA, forming a complex with associated proteins known as small nucleolar ribonucleoproteins (snoRNPs). These snoRNPs direct the enzymatic machinery to the target site, facilitating the addition or removal of chemical groups.
There are two main types of snoRNAs: box C/D snoRNAs and box H/ACA snoRNAs. Box C/D snoRNAs mainly guide the addition of methyl groups to ribose sugars in rRNA, while box H/ACA snoRNAs guide the formation of pseudouridine, another common RNA modification. In addition to their role in rRNA and tRNA modification, snoRNAs also regulate other cellular processes, such as alternative splicing of mRNA and DNA methylation.
In conclusion, small nucleolar RNAs (snoRNAs) are a diverse group of small RNA molecules that guide modifications of ribosomal and transfer RNAs, essential for their maturation and function. They play a crucial role in ensuring proper cellular function by accurately regulating the processing of other RNA molecules.
Common Misspellings for SMALL NUCLEOLAR RNA
- amall nucleolar rna
- zmall nucleolar rna
- xmall nucleolar rna
- dmall nucleolar rna
- emall nucleolar rna
- wmall nucleolar rna
- snall nucleolar rna
- skall nucleolar rna
- sjall nucleolar rna
- smzll nucleolar rna
- smsll nucleolar rna
- smwll nucleolar rna
- smqll nucleolar rna
- smakl nucleolar rna
- smapl nucleolar rna
- smaol nucleolar rna
- smalk nucleolar rna
- smalp nucleolar rna
- smalo nucleolar rna
- small bucleolar rna
