1. mRNA BINDS to RIBOSOME - 2 codons attached to small unit of ribosome and exposed to large subunit. 1st codon is always AUG. Using ATP + an enzyme, tRNA with methionine and antiocodon UAC form hydrogen bonds with codon.
2. 2nd tRNA with different amino acids binds to 2nd exposed codon with its complementary anticodon.
3. PEPTIDE BOND forms between 2 adjacent AMINO ACIDS - Enzyme catalyses reaction.
4. Ribsome moves along mRNA, reading the next codon - 3rd tRNA brings amino acid and peptide bond forms between it - 1st tRNA leaves, collects and brings another one of its amino acids.
5. POLYPEPTIDE CHAIN grows until STOP CODON is reached - No corresponding codons for UAA, UAC, UGA, so chain is complete.
Comments
No comments have yet been made