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Termination codons

termination codon

(Science: molecular biology) The three codons, UAA known as ochre, UAG as amber and UGA as opal, that do not code for an amino acid but act as signals for the termination of protein synthesis.

They are not represented by any tRNA and termination is catalysed by protein release factors. There are two release factors in e. Coli, RF1 recognises UAA and UAG, RF2 recognises UAA and UGA. Eukaryotes have a single gTP requiring factor, eRF.

See: ochre suppressor, amber suppressor.

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Are STOP codons involved in both TRANSCRIPTION & TRANSLATION

... and translation. I have two textbooks one says: "Three of these 64 codons are stop codons that specify the termination of a polypeptide; all the rest code for amino acids" From this textbook I ...

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by reyrey389
Sun Nov 06, 2011 8:02 am
Forum: Cell Biology
Topic: Are STOP codons involved in both TRANSCRIPTION & TRANSLATION
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by LilKim
Tue May 09, 2006 3:04 pm
Forum: Genetics
Topic: Gene expression
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Views: 4762


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by MrMistery
Sat Nov 26, 2005 5:34 pm
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Topic: codons
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how can DNA....

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by victor
Tue Sep 06, 2005 9:40 am
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Topic: how can DNA....
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