Here's how it works:
* tRNA structure: tRNA molecules have a unique cloverleaf structure with three important parts:
* Anticodon loop: This loop contains a three-nucleotide sequence that base pairs with a complementary codon on the mRNA molecule.
* Amino acid attachment site: This site binds to a specific amino acid, determined by the tRNA's anticodon.
* Ribosome binding site: This site interacts with the ribosome during protein synthesis.
* tRNA function:
1. Each tRNA molecule carries a specific amino acid.
2. The tRNA moves to the ribosome, where it matches its anticodon to the corresponding codon on the mRNA.
3. The amino acid attached to the tRNA is then added to the growing polypeptide chain.
In essence, tRNA acts as a molecular translator, reading the genetic code in the mRNA and delivering the correct amino acids to build the protein.