Biochemistry

leaf, with the nucleotide chain forming a double-stranded structure. There is a codon-triplet consisting of three nitrogen bases at one end of the T-RNA, to which a specific aminoacyladenylate is attached. There is an anticodon complementary to the codon at the opposite end of the molecule. Gene '< .......................................... * DNA M-RNA Protein Aminoacids Figure 9.3 - Scheme of protein biosynthesis The amino acid sequence in the primary structure of the synthesized polypeptide chain is provided by information that is recorded in the M-RNA nucleotide sequence that reflects the corresponding sequence in the DNA. Each amino acid is encoded by specific triplets of M-RNA nucleotides. Their decoding made it possible to establish the RNA nucleotide code or amino acid code, i.e., the method by which the information recorded in the RNA nucleotide sequence into the primary protein structure or the sequence of amino acid residues 184