1. Protein Synthesis

2. Reminder- Transcription
The DNA message has been changed into RNA
3 types of RNA
mRNA
tRNA
rRNA

3. Part 2 of Gene Expression- Translation
mRNA goes to ribosome
Goal of translation
The mRNA tells what order the amino acids should be in to make the protein

4. Translation The Code -Codon- 3 letters unit of mRNA
-64 different codons but only 20 different AA

5. Translation b) Transfer RNA (tRNA) -Bring the AA to the ribosomes
-at least 1 tRNA molecule for each of 20 AA
-AA binds to one end of tRNA
-Other end has anticodon which is complimentary to a specific codon of mRNA
-tRNA-amino acid complex goes to ribosome and its anticodon pairs with mRNA codon

6. Translation c) Ribosomes & rRNA -ribosome has multiple binding sites
-3 stages of translation:
1. Initiation
2. Elongation
3. Termination

7. Translation overview

8. Summary What you need to know: Why translation occurs
Match the mRNA codon with an amino acid
Ex) AUG = Methionine (Start codon)
What is happening during the steps of Translation
Initiation
Elongation
Termination