Anticodon


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anticodon

[¦an·tē¦kō‚dän]
(genetics)
A three-nucleotide sequence in transfer RNA that complements the codon in messenger RNA.

Anticodon

 

part of the transfer ribonucleic acid or tRNA (in Russian, transport RNA or t-RNA), consisting of three unpaired (free bond) nucleotides. This section is specifically paired with the codon of messenger RNA or mRNA (in Russian, information RNA or i-RNA), which assures the proper arrangement of each amino acid during protein synthesis.

References in periodicals archive ?
A or G in the third position of the codon is recognised by U in the first position of the anticodon and, respectively, C and U are recognised by G (Gabryelska and Barciszewski, 2011).
Osawa T, Ito K, Inanaga H, Nureki O, Tomita K, Numata T (2009) Conserved cysteine residues of GidA are essential for biogenesis of 5-carboxymethylaminomethyluridine at tRNA anticodon.
Thus, for a new codon and anticodon in translation, the s-y pair is better than the s-z pair.
Modified uridines with C5-methylene substituents at the first position of the tRNA anticodon stabilize U.
There is a separate tRNA molecule for each of the 20 amino acids, and each one is specific because of a particular anticodon loop, a sequence of three nitrogen bases that read as a complement to the codon at the site of the ribosome-mRNA.
The tRNA molecule has three unpaired nucleotides, which together are called the anticodon sequence; this sequence plays an important role in the formation of the linear array of amino acids that constitute a protein.
Incluye cuatro etapas: activacion, en la que se forma el ARN de transferencia (ARNt); iniciacion, cuando el ARNt que contiene metionina, se alinea con el codon iniciador AUG en el ARNm del ribosoma; elongacion, donde cada anticodon del ARNt se adosa a cada codon del ARNm.
A series of three nucleotides is known as a triplet in DNA, a codon in messenger RNA (mRNA), and an anticodon in transfer RNA (tRNA); each will code for a specific amino acid.
The researchers changed the anticodon in their new tRNA to match up with the UAG stop codon instead of the codon for glutamine.
tRNA consists of two coaxially stacked helices which appear to be independent structural and functional domains: the top half contains the acceptor stem and the T[Psi]C stemloop, and the bottom half contains the D stem-loop and the anticodon stem-loop [ILLUSTRATION FOR FIGURE 1 OMITTED].