How do we get proteins?

DNA to RNA to Protein

Transcription & Translation

TranscriptionDNA is used to make a single strand of RNA

that is complementary to the DNA base pairs.

The enzyme used is RNA polymerase

Transcription

TranslationProtein being made from the RNA template

RNA messenger= carries message from DNA

Ribosomal RNA= ribosome that reads the mRNA

Transfer RNA= transfers the amino acid from the code of nitrogen bases

Steps of Translation1. mRNA finds a ribosome2. mRNA is read by the ribosome3. Every 3 bases = codon4. Each codon read = 1 amino acid brought

by the tRNA (3 bases on anticodon)5. Many amino acids strung together =

polypeptide = protein

TranslationInitiation- Small ribosome subunit finds bases

AUG, then the large subunit binds and starts the process

Elongation- Amino acids are bonded by peptide bonds

Termination- Stop codon (UAA, UAG, or UGA) signals the release of the polypeptide from the ribosome

Translation

Transcription & Translation