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Capítulo 9

Tradução: RNA para Proteína

Tradução
Tradução
Lesson: Translation Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following ...
Ativação de tRNA
Ativação de tRNA
Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 ...
Ribossomos
Ribossomos
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that ...
Melhorando a Precisão Translacional
Melhorando a Precisão Translacional
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 ...
Iniciação da Tradução
Iniciação da Tradução
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are ...
Término da Tradução
Término da Tradução
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the ...
Decaimento de mRNA mediado por Mutação Sem Sentido
Decaimento de mRNA mediado por Mutação Sem Sentido
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual ...
Chaperonas Moleculares e Enovelamento de Proteínas
Chaperonas Moleculares e Enovelamento de Proteínas
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 ...
O Proteossoma
O Proteossoma
Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the ...
Degradação Regulada de Proteínas
Degradação Regulada de Proteínas
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 ...
Proteínas: Dos Genes à Degradação
Proteínas: Dos Genes à Degradação
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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