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There are two amino acids that only correspond to one codon:
- Tryptophan whose codon is UGG
- Methionine whose codon is AUG
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Are amino acids only represented by one codon?
No, amino acids can be represented by multiple codons. This is due to the redundancy in the genetic code, where different codons can code for the same amino acid.
When a protein is synthesized what amino acid is always the first amino acid that is positioned during any protein synthesis?
"AUG" actually corresponds to a region of code on mRNA and is NOT an amino acid. The tRNA that has the anticodon 5' CAU 3' and recognizes AUG is a tRNA charged with Methionine. Therefore, methionine is the first amino acid incorporated into a growing polypeptide. Note this is true for only eukaryotes, prokaryotes have N-formyl methionine as their first amino acid.
Which amino acids have only one codon?
Methionine and Tryptophan have only one codon each: AUG for Methionine and UGG for Tryptophan.
What identifies the specific amino acid for tRNA?
The anticodon on the tRNA molecule is what determines the specific amino acid it carries. The anticodon base pairs with the complementary codon on the mRNA during translation, ensuring that the correct amino acid is added to the growing polypeptide chain.
How many nucleotides make an amino acid?
3 are needed. As there are 20 amino acids used in proteins, each amino acid would have to be encoded by a minimum of three nucleotides. For example, a code of two consecutive nucleotides could specify a maximum of 16 (42) different amino acids, excluding stop and start signals. A code of three consecutive nucleotides has 64(43) different members and thus can easily accommodate the 20 amino acids plus a signal to stop protein synthesis.
Are amino acids only represented by one codon?
No, amino acids can be represented by multiple codons. This is due to the redundancy in the genetic code, where different codons can code for the same amino acid.
Do stop codon have an amino acid?
No, stop codons do not code for any amino acids. Instead, they signal the end of protein synthesis by causing the ribosome to release the completed protein.
There can only be one what for every codon?
There can only be one amino acid for every codon. Tryptophan and Methionine are the types of amino acids that correspond to codon.
For any codon there can only be one?
There is only one corresponding amino acid for each codon. Each codon codes specifically for one amino acid (however, an amino acid can be coded for by several different codons). For example: CAU codes for Histamine (and not any other amino acid) But, CAC also codes for Histamine.
All amino acids are specified by only one codon?
No. Some are specified by only one codon eg. methionine and tryptophan. But some have more than one codon eg. threonine.
What are the amino acids on the codon table?
Each codon codes for only one amino acid, or a codon is a start or stop codon, but no codon codes for more than one amino acid.
For any one codon there can be only one what?
A single codon codes for a single amino acid.
What are 2 amino acids that are represented by only one codon?
Tryptophan (TRP) and Methionine (MET).
What amino acid is encoded by the initiation codon AUG?
The amino acid that is encoded by the initiation codon AUG is methionine. It is the only amino acid which is specified by just one codon.
What two amino acids are represented with only one codon?
They are triptopan and methionine.Codons are UGG and AUG respectively.
Is it possible for mutations to go unnoticed in mRNA?
Yes it is. There are more triplet codons than there are [biologically active] amino acids that need to be represented in the Cell, so that there is some duplication of codon/amino acid 'alignment'. This occurs only in the third base position of the triplet codon - the 'wobble base' position - so if a mutation occurred in the wobble (third) position and the codon was one of the few that was not alone in its amino acid specificity this mutation would go unnoticed.
How many amino acids does each condon code for?
No they are not. For a codon, there are 4^3 = 64 codon combinations, but only 20 [common] amino acids. The 4 represents the 4 nitrogenous bases, and the ^3 represents the arrangement into a codon (3 bp). An example of an amino acid that is specified by more than one amino acid is Alanine, which is specified by any of the following combinations: GUU, GUC, GUA, GUG. Because most amino acids have more than one codon, the genetic code is called "degenerate".
