HETEROGENEOUS NUCLEAR RNA Meaning and
Definition
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Heterogeneous Nuclear RNA (hnRNA) refers to a large and diverse group of RNA molecules found within the nucleus of eukaryotic cells. hnRNA is transcribed from DNA in the cell nucleus and undergoes extensive processing to generate mature mRNA molecules that can be translated into proteins.
The term "heterogeneous" in hnRNA indicates that these RNA molecules exist in a complex mixture of various sizes and sequences. Unlike the mature mRNA molecules, hnRNA is larger in size and contains non-coding sequences known as introns. These introns are interspersed between coding regions known as exons.
The processing of hnRNA includes a series of modifications to generate the final mRNA molecule. This process involves splicing out the introns, capping the 5' end of the mRNA with a modified guanine nucleotide, and adding a poly-A tail to the 3' end.
Although hnRNA is not directly involved in protein synthesis, it serves as an intermediate between DNA and mRNA. It carries the genetic information from the DNA to the site of mRNA synthesis, known as the transcription site, where it undergoes processing to produce mature mRNA.
Overall, hnRNA plays a critical role in gene expression and the production of proteins. Its diverse nature and processing mechanisms make it an essential component of the complex machinery involved in gene regulation and protein synthesis in eukaryotic cells.
Common Misspellings for HETEROGENEOUS NUCLEAR RNA
- geterogeneous nuclear rna
- beterogeneous nuclear rna
- neterogeneous nuclear rna
- jeterogeneous nuclear rna
- ueterogeneous nuclear rna
- yeterogeneous nuclear rna
- hwterogeneous nuclear rna
- hsterogeneous nuclear rna
- hdterogeneous nuclear rna
- hrterogeneous nuclear rna
- h4terogeneous nuclear rna
- h3terogeneous nuclear rna
- hererogeneous nuclear rna
- heferogeneous nuclear rna
- hegerogeneous nuclear rna
- heyerogeneous nuclear rna
- he6erogeneous nuclear rna
- he5erogeneous nuclear rna
- hetwrogeneous nuclear rna
- hetsrogeneous nuclear rna
