<P> An aminoacyl tRNA synthetase ( aaRS ) is an enzyme that attaches the appropriate amino acid onto its tRNA . It does so by catalyzing the esterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl - tRNA . In humans , the 21 different types of aa - tRNA are made by the 21 different aminoacyl - tRNA synthetases , one for each amino acid of the genetic code . </P>
<P> An aminoacyl tRNA synthetase ( aaRS ) is an enzyme that attaches the appropriate amino acid onto its tRNA . It does so by catalyzing the esterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl - tRNA . In humans , the 21 different types of aa - tRNA are made by the 21 different aminoacyl - tRNA synthetases , one for each amino acid of the genetic code . </P>
where is the amino-acid binding site located on the trna molecule
where is the amino-acid binding site located on the trna molecule
21 different types of aa - tRNA are made by the 21 different aminoacyl - tRNA synthetases , one for each amino acid of the genetic code
21 different types of aa - tRNA are made by the 21 different aminoacyl - tRNA synthetases , one for each amino acid of the genetic code