It will finish the protein upon reaching a 'STOP' codon (UAA, UAG or UGA)
The stop codon signals the end of protein synthesis by instructing the ribosome to stop adding amino acids to the growing protein chain.
mRNA
Stop codons (also known as nonsense codons) do not code for amino acids. These include UAG, UAA, and UGA. When a stop codon is encountered during translation, it signals the termination of protein synthesis.
There are three codons that do not code for any amino acids: the stop codons. These are TAG, TAA, and TGA (in DNA, not RNA).
Ribosomes use messenger RNA or mRNA and transfer RNA or tRNA to encode Proteinogenic amino acids into protein. (If you want a further explanation, comment and I'll be happy to explain/share a link)
There are 64 codons (3-base code) that represent 20 amino acids and 3 stop signals. Click on the related link to see a table of DNA codons and the amino acids for which they code.
There are 64 possible triplets. At least one of the triplets needs to be a stop codon, so theoretically 63 different amino acids can be coded for. In practice, there's some redundancy, and in humans all codons are either stop codons or translate to one of twenty amino acids.
Starting from the translation start codon in the mRNA molecule, each three bases corresponds to a single amino acid, until you reach the stop signal. Some amino acids have more that one triplet that codes for them (redundancy). Some parts of the mRNA molecule are untranslated and therefore do not correspond to amino acids.
B. stop
You will die if you stop eating amino-acids (most often eaten in the form of protein).
A stop codon (UGA, UAA, UAG) only codes for a stop. No amino acid results from a stop codon.
If a cell did not have amino acids or the ability to produce them this would mean that cell did not have the plasma membrane and the membranes that surround a cellâ??s organelles. In this situation a cell would not have the ability to fix damage it sustained or be able to reproduce.