tRNA | |
---|---|
Identifiers | |
Symbol | t |
Rfam | RF00005 |
Other data | |
RNA type | gene, tRNA |
PDB structures | PDBe 3icq, 1asy, 1asz, 1il2, 2tra, 3tra, 486d, 1fir, 1yfg, 3eph, 3epj, 3epk, 3epl, 1efw, 1c0a, 2ake, 2azx, 2dr2, 1f7u, 1f7v, 3foz, 2hgp, 2j00, 2j02, 2ow8, 2v46, 2v48, 2wdg, 2wdh, 2wdk, 2wdm, 2wh1 |
Transfer RNA (abbreviated tRNA and formerly referred to as sRNA, for soluble RNA[1]) is an adaptor molecule composed of RNA, typically 76 to 90 nucleotides in length (in eukaryotes).[2] In a cell, it provides the physical link between the genetic code in messenger RNA (mRNA) and the amino acid sequence of proteins, carrying the correct sequence of amino acids to be combined by the protein-synthesizing machinery, the ribosome. Each three-nucleotide codon in mRNA is complemented by a three-nucleotide anticodon in tRNA. As such, tRNAs are a necessary component of translation, the biological synthesis of new proteins in accordance with the genetic code.
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