RRNA PRECURSOR Meaning and
Definition
-
rRNA precursor refers to the initial form or molecule of ribosomal RNA (rRNA) before it undergoes maturation and processing to become functional rRNA within a cell. rRNA is a fundamental component of ribosomes, which are essential organelles involved in protein synthesis.
Within a eukaryotic cell, the rRNA precursor molecule is initially transcribed in the nucleolus, a specialized region within the nucleus. The process of rRNA transcription produces a primary transcript called the pre-rRNA. This primary transcript is often a large molecule and needs to undergo significant processing steps to become functional rRNA.
The rRNA precursor molecule is modified and processed at various stages to remove non-coding regions and generate mature rRNA molecules of different sizes, such as the small subunit 18S rRNA and large subunit 28S, 5.8S, and 5S rRNA. These mature rRNA molecules will eventually associate with ribosomal proteins to form ribosomes, which are responsible for protein synthesis.
Processing of the rRNA precursor involves the removal of spacer sequences, introns, and chemical modifications such as methylation and pseudouridylation. Several nucleases, enzymes, and other factors are involved in this complex process, ensuring accurate and efficient maturation of rRNA.
Understanding the structure and processing of rRNA precursors is crucial for investigating the regulation of protein synthesis and the overall functioning of cellular machinery.
Common Misspellings for RRNA PRECURSOR
- rrba precursor
- rrma precursor
- rrja precursor
- rrha precursor
- rrnz precursor
- rrns precursor
- rrnw precursor
- rrnq precursor
- rrna orecursor
- rrna lrecursor
- rrna -recursor
- rrna 0recursor
- rrna peecursor
- rrna pdecursor
- rrna pfecursor
- rrna ptecursor
- rrna p5ecursor
- rrna p4ecursor
- rrna prwcursor
- rrna prscursor
Etymology of RRNA PRECURSOR
The etymology of the word "rRNA precursor" can be broken down as follows:
1. rRNA: rRNA stands for ribosomal RNA. The term "RNA" is an abbreviation for ribonucleic acid, which is a molecule that plays a crucial role in various biological processes, including protein synthesis. The addition of "r" in front of RNA specifies that it refers to ribosomal RNA, which is a type of RNA that is a fundamental component of ribosomes.
2. Precursor: The word "precursor" is derived from the Latin word "praecursor", which is composed of two parts: "prae" meaning "before" and "cursus" meaning "a running". The term precursor refers to something that comes before or precedes a particular object or process.
Infographic
Add the infographic to your website:
