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Kapitel 10

Translation: Von der RNA zum Protein

Übersetzung
Übersetzung
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes ...
Ribosomen
Ribosomen
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that ...
tRNA-Aktivierung
tRNA-Aktivierung
Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 ...
Initiierung der Übersetzung
Initiierung der Übersetzung
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are ...
Beendigung der Übersetzung
Beendigung der Übersetzung
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the ...
Verbesserung der Translationsgenauigkeit
Verbesserung der Translationsgenauigkeit
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 ...
Nonsense-vermittelter mRNA-Zerfall
Nonsense-vermittelter mRNA-Zerfall
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual ...
Molekulare Chaperone und Proteinfaltung
Molekulare Chaperone und Proteinfaltung
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 ...
Das Proteasom
Das Proteasom
Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the ...
Regulierter Proteinabbau
Regulierter Proteinabbau
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: Von den Genen bis zum Abbau
Proteine: Von den Genen bis zum Abbau
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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