1. Draw an amino acid. Join it to another amino acid via dehydration synthesis to make a dipeptide. Label all parts of each amino acid and the peptide bond. (See figure 4.3 for inspiration) 2. Now draw two dipeptides one on top and one below it-connect the dipeptides on top to the ones on the bottom with a line to show that they are two strands of the same protein molecule. 3. Connect the two dipeptides via hydrogen bonds (see figure 4.6 for inspiration). Label the hydrogen bonds. Be sure to connect the correct atoms via H-bonds (Many students connect incorrect atoms. Focus on which atoms will have opposite partial charges to form H-bond). You have drawn a secondary structure of proteins known as beta sheets. Focus on the fact that that secondary structure ns between backbone elements like carbonyvl groups and amide groups.
Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
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