Protein Synthesis. Beth Walker. Importance of Proteins & DNA. DNA carries the instructions for making all proteins. A portion of a DNA strand with instructions for making a protein is called a gene Proteins are made up of many building blocks or monomers called amino acids.
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E. There are 20 different amino acids, such as valine, lysine, and leucine, which are put in various arrangements to make proteins
REMEMBER THERE IS NO THYMINE IN mRNA!!!!!
6. Three nucleotides on an mRNA strand are called a codon. By looking at a codon chart, we can determine the amino acid that mRNA strand will put together.
codons that will tell where to begin and
where to end the protein.
8. The stop codons are UAA, UGA, and UAG. The last amino acid in a protein will always be coded by a “stop” codon.
are linked together to make a protein.
4. The ribosome looks for the “start” codon.
6. In the cytoplasm, tRNA, a clover-leaf shaped RNA, will attach to free floating amino acids and form anticodons (made up of tRNA).
7. Amino acids come from proteins that we eat and they are broken down during digestion.
8. tRNA pairs with mRNA and brings the correct amino acid with it to the ribosome.
Transcribe & Translate a Gene Here