What's the role of rRNA in translation?
As the building-blocks for the organelle production of rRNA is ultimately the rate-limiting step in the synthesis of a ribosome. In the nucleolus rRNA is synthesized by RNA polymerase I using the specialty genes (rDNA) that encode for it which are found repeatedly throughout the genome. The genes coding for 18S 28S and 5.8S rRNA are located in the nucleolus organizer region and are transcribed into large precursor rRNA (pre-rRNA) molecules by RNA polymerase I. These pre-rRNA molecules are separated …
In molecular biology and genetics translation is the process in which ribosomes in the cytoplasm or endoplasmic reticulum synthesize proteins after the process of transcription of DNA to RNA in the cell's nucleus. The entire process is called gene expression. In translation messenger RNA (mRNA) is decoded in a ribosome outside the nucleus to produce a specific amino acid chain or polypeptide. The polypeptide later folds into an activeprotein and performs it…
23S ribosomal RNA - Wikipedia
Ribosomal RNA ( rRNA ) is the catalytic component of the ribosomes. Eukaryotic ribosomes contain four different rRNA molecules: 18S 5.8S 28S and 5S rRNA . Three of the rRNA molecules are synthesized in the nucleolus and one is synthesized elsewhere. In the cytoplasm ribosomal RNA and protein combine to form a nucleoprotein called a ribosome.
The Shine–Dalgarno sequence is a ribosomal binding site in bacterial and archaeal messenger RNA generally located around 8 bases upstream of the start codon AUG. The RNA sequence helps recruit the ribosome to the messenger RNA to initiate protein synthesis by aligning the ribosome with the start codon. Once recruited tRNA may add amino acids in sequence as dictated by the codons …
The 23S rRNA is a 2904 nt long component of the large subunit of the bacterial/archean ribosome. The ribosomal peptidyl transferase activity resides in domain V of this rRNA and this domain is t...
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