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&nbsp;The start codon for any polypeptide chain is always AUG, which codes for Methionine. tRNA<sup>Met</sup>&nbsp;is bound to AUG and begins polypeptide synthesis.&nbsp;<ref>Daniel L. Hartl and Maryellen Ruvolo (2012) Genetics: Analysis of genes and genomes. 8th Edition. USA: Jones and Bartlett Learning, p.26</ref><sup></sup>
The start codon for any [[Polypeptide chain|polypeptide chain]] is not always AUG at some circumtances, which codes for [[Methionine|Methionine]]. tRNA<sup>Met</sup>&nbsp;is bound to AUG and begins polypeptide synthesis<ref>Daniel L. Hartl and Maryellen Ruvolo (2012) Genetics: Analysis of genes and genomes. 8th Edition. USA: Jones and Bartlett Learning, p.26</ref>.


Many polypeptides, however, have the methionine cleaved off after translation is complete, so AUG codon will not always be present in base sequences.&nbsp;
Many polypeptides, however, have the [[Methionine|methionine]] cleaved off after translation is complete, so AUG [[Codon|codon]] will not always be present in base sequences and not counted as in total number of [[Amino acid|amino acid]] as start and stop codon are not counted as amino acid at the end of the reaction of binding [[Protein|protein]].&nbsp;<br>


 
=== References  ===
 
= References  =


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Latest revision as of 18:47, 15 November 2018

The start codon for any polypeptide chain is not always AUG at some circumtances, which codes for Methionine. tRNAMet is bound to AUG and begins polypeptide synthesis[1].

Many polypeptides, however, have the methionine cleaved off after translation is complete, so AUG codon will not always be present in base sequences and not counted as in total number of amino acid as start and stop codon are not counted as amino acid at the end of the reaction of binding protein

References

  1. Daniel L. Hartl and Maryellen Ruvolo (2012) Genetics: Analysis of genes and genomes. 8th Edition. USA: Jones and Bartlett Learning, p.26