Protein Synthesis

mRNA

mRNA travels from nucleus to ribosome. The role of mRNA in protein synthesis is to transfer the encoded information in DNA to the ribosomes in the cytoplasm.

rRNA

Binding site for mRNA codon and tRNA anticodon. Needed for translation.

What are the 3 types of RNA?

1. Messager RNA (mRNA) 2. Transfer RNA (tRNA) 3. Ribosimal RNA (rRNA)

What are the two steps of protein synthesis?

1. Transcription 2 Translation

What is protein synthesis?

DNA to RNA to Proteins!

tRNA

Goal is to get amino acids lined up to form peptide bonds. Anticodon on tRNA bind to mRNA codon. Needed for translation.

Translation

Occurs in cytoplasm. RNA to protein.

Transcription

Occurs in the nucleus. DNA to RNA.

pRNA

Post transcription RNA

What is the job of RNA polymerase?

Supervises process of transcription.

What does helicase do?

Unwinds DNA.