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Chapter 10

Translation: RNA to Protein

Traduzione
Traduzione
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes ...
Ribosomi
Ribosomi
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that ...
Attivazione del tRNA
Attivazione del tRNA
Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 ...
Inizio della traduzione
Inizio della traduzione
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are ...
Cessazione della traduzione
Cessazione della traduzione
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the ...
Miglioramento dell'accuratezza della traduzione
Miglioramento dell'accuratezza della traduzione
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single ...
Decadimento dell'mRNA mediato da nonsenso
Decadimento dell'mRNA mediato da nonsenso
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual ...
Chaperoni molecolari e ripiegamento delle proteine
Chaperoni molecolari e ripiegamento delle proteine
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form ...
Il proteasoma
Il proteasoma
Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the ...
Degradazione Regolata delle Proteine
Degradazione Regolata delle Proteine
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a ...
Proteine: dai geni alla degradazione
Proteine: dai geni alla degradazione
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This ...
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