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Protein
Synthesis
Unit 2-6 Notes
Mr. Hefti – Pulaski Biology
Essential
terminology and
structures you
need to be able
to identify
Protein synthesis: series
of steps that convert
the DNA code into an
organism’s features.
Steps…
1. Focus on a single gene
on a chromosome in
the nucleus
2. DNA code gets
converted to mRNA
code by transcription
(C-G, G-C, T-A, A-U)
3. In cytoplasm, mRNA
code read as 3-letter
codons
4. Codons converted to
amino acids by
translation at
ribosomes
5. Amino acid chains
become proteins
6. Proteins determine
traits
Read from the top
second.
Read
from
this
side
first!
Then
read
from
this
side
third.
Practice Performing Protein Synthesis
1. Translate the amino acids that the following DNA
would encode…
Blue eyes protein =
A A A G C T TAA C G A
U U U C G AA U U G C U
Phe-Arg-Iso-Ala
Brown eyes protein =
C CATTG G G G TTA
G G UA A C C C C A A U
Gly-Asp-Pro-Asp
Practice Performing Protein Synthesis
2. This time write a potential DNA code…
Brown hair protein =
Ser-Tyr-Ala-Lys
U C U U A U G C U AAA
AGAATAC GAT T T
Blonde hair protein =
Glu-Tyr-Ala-Glu
C AA U A U G C U C AA
GTTAT ACGAGTT
Protein synthesis: series
of steps that convert
the DNA code into an
organism’s features.
Steps…
1. Focus on a _________
on a chromosome in
the ____________
2. DNA code gets
converted to ________
code by transcription
(_________________)
3. In cytoplasm, mRNA
code read as 3-letter
__________
4. Codons converted to
_______________ by
translation at
____________
5. Amino acid chains
become ____________
6. Proteins determine
_____________