How many peptide bonds are in a dipeptide? Explain why the direction of protein from N to C terminal
Added by Kristin M.
Step 1
Each amino acid has an amino group (NH2) and a carboxyl group (COOH). When two amino acids bond, the carboxyl group of the first amino acid reacts with the amino group of the second amino acid, releasing a water molecule (H2O) and forming a peptide bond. Show more…
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Adi S.
Proteins are directional, meaning they have a chemically different beginning and end. Looking at your dipeptide, the N-terminus is the end with the "free" amino group. The C-terminus is the end with the "free" carboxylic acid group. Practice finding the different parts of the amino acids in the two proteins below: a. Label the N terminus b. Label the C terminus c. How many amino acids are present in this protein? d. Mark each peptide bond. e. Label the N terminus f. Label the C terminus g. How many amino acids are present in this protein? h. Mark each peptide bond.
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Why is the peptide formation always presented/read from N-terminal to C-terminal?
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