Protein Synthesis Explained with Simple Animations

DNA transcription occurs in the nucleus of the cell.The process begins with the DNA double helix.The DNA strands contain specific sequences of nucleotide bases that pair together: A with T, and C with G.During transcription, the DNA double helix unwinds, exposing the template strand.RNA polymerase attaches to the DNA and begins reading the template strand.As RNA polymerase moves along the DNA, it builds a complementary mRNA strand, using U instead of T to pair with A.The new mRNA is modified by adding a five prime cap and a poly-A tail.The completed mRNA molecule then leaves the nucleus through nuclear pores.The mRNA will now move to the cytoplasm where it will be used as a template for protein synthesis.The ribosome consists of two main parts: a large subunit and a small subunit.Transfer RNA, or tRNA, has a distinctive cloverleaf shape with three loops and a stem.Each tRNA carries a specific amino acid and has an anticodon that matches the mRNA codon.The mRNA strand contains codons - sequences of three nucleotides that specify which amino acids to add to the growing protein chain.tRNAs bring amino acids to the ribosome by matching their anticodons to the corresponding codons on the mRNA.The ribosome moves along the mRNA strand, facilitating the interaction between codons and anticodons.As the ribosome moves, it helps transfer amino acids from the tRNAs to form the growing protein chain.Inside the ribosome's active site, amino acids are brought together to form peptide bonds.As each amino acid enters the active site, a peptide bond forms between its amino group and the carboxyl group of the previous amino acid.As the polypeptide chain emerges from the ribosome, it begins to fold into its secondary structure.The chain can form alpha helices, characterized by their spiral shape, or beta sheets, which have a zigzag pattern.Chaperone proteins help prevent misfolding and assist in achieving the correct three-dimensional structure.The final protein achieves its unique three-dimensional structure, which is essential for its specific function in the cell.This precisely folded structure allows the protein to perform its specific function in the cell.And that completes our journey from DNA to functional protein!