Protein Synthesis Chapter 10 3 l Protein synthesis

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Protein Synthesis Chapter 10. 3

Protein Synthesis Chapter 10. 3

l Protein synthesis- the production of proteins l The amount and kind of proteins

l Protein synthesis- the production of proteins l The amount and kind of proteins produced in a cell determine the structure and function of the cell

The Genetic Code l Genetic code- the correlation between the nucleotide sequence and an

The Genetic Code l Genetic code- the correlation between the nucleotide sequence and an amino-acid sequence l During protein synthesis, the sequence of nucleotides is translated into a sequence of amino acids

l Codon- each combination of 3 m. RNA nucleotides l Start codon (AUG)- engages

l Codon- each combination of 3 m. RNA nucleotides l Start codon (AUG)- engages a ribosome to start translating an m. RNA molecule l Stop codons (UAA, UAG, UGA)- cause the ribosome to stop translating

Translation l Translation- the process of assembling polypeptides from information encoded in m. RNA

Translation l Translation- the process of assembling polypeptides from information encoded in m. RNA l Begins when m. RNA leaves the nucleus through pores in the nuclear membrane l m. RNA migrates to a ribosome in the cytosol

t. RNA and Anticodons l Anticodon- a region of t. RNA consisting of three

t. RNA and Anticodons l Anticodon- a region of t. RNA consisting of three bases complementary to the codon of m. RNA l Amino acids floating freely in the cytosol are transported to the ribosomes by t. RNA molecules

l Ribosomes have three binding sites that are important to translation l One site

l Ribosomes have three binding sites that are important to translation l One site holds a m. RNA transcript so its codons are accessible to r. RNA molecules l The other two sites hold t. RNA whose anticodons pair with the m. RNA codons

Protein Assembly l Assembly begins when a ribosome attaches to the start codon (AUG)

Protein Assembly l Assembly begins when a ribosome attaches to the start codon (AUG) on an m. RNA transcript l As a ribosome moves along an m. RNA transcript, each m. RNA codon is paired with its t. RNA anticodon

Practice sequences!! Study for the Ch 10 test!! Know the Ch 10 vocabulary!!

Practice sequences!! Study for the Ch 10 test!! Know the Ch 10 vocabulary!!

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