Protein Synthesis Protein Synthesis Overview What does DNA

Protein Synthesis

Protein Synthesis Overview What does DNA actually do?

Protein Synthesis Overview What does DNA actually do? Contains the genetic instructions for making proteins.

Protein Synthesis Overview What do those proteins do?

Protein Synthesis Overview What do those proteins do? Many different functions in your body such as enzymes, transport molecules, and helping your muscles to move. Proteins help to show different physical traits

GENE What is a gene?

Protein Synthesis Overview What is a gene? A sequence of DNA that codes for a protein, and therefore, determines a trait.

Protein Synthesis (Making proteins) Protein Synthesis: the process by which the DNA sequence (gene) provides instructions that control the production of proteins within the cell. Protein Synthesis two step process: 1. Transcription 2. Translation

CENTRAL DOGMA Transcription DNA RNA Translation Proteins

Transcription is the process of making m. RNA using DNA as a template.

Transcription A signal tells the enzymes where to start making m. RNA. Only one gene is transcribed at a time.

Transcription Genes on DNA code for m. RNA which make proteins. This occurs in the nucleus of the cell.

When a problem tells you to transcribe, you are to write the m. RNA sequence.

Transcription- Review m. RNA molecules are produced by copying part of the DNA sequence into a complementary in RNA What? DNA to m. RNA Where? Occurs in the nucleus Why? So that a disposable copy of the DNA instructions can be made and sent outside of the nucleus to make a protein How? Enzyme RNA polymerase uses one DNA strand (as a template) With base pairing rules (except U instead of T), a new complementary strand of RNA forms