Transfer RNA (tRNA)

Transfer RNA (abbreviated tRNA) is a small RNA (usually about 74-95 nucleotides) that transfers a specific amino acid to a growing polypeptide chain at the ribosomal site of protein synthesis during translation. It has a 3′ terminal site for amino acid attachment. This covalent linkage is catalyzed by an aminoacyl tRNA synthetase. It also contains […]

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Protein Domains and Protein Domain Classification

When discussing protein fold we first need to identify the folding unit. Such unit is called a protein domain. This means that when we talk about fold classification we actually mean PROTEIN DOMAIN CLASSIFICATION. Protein domains are the basic building blocks of a protein, Structural Organization of Proteins and they are also the basic evolutionary […]

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