6. Peptide bonds link many amino acids into chains of subunits that make polypeptides, or proteins. In the space below, or on a blank sheet of paper, draw the dehydration synthesis reaction showing the peptide bond that forms between two alanine (C3H;NO2) amino acids. Remember that all amino acids have an amino functional group at one end (N-terminal end) and a carboxyl functional group at the other end (C-terminal end). Also, alanine is an amino acid that has a CH3 off the middle ("R" group) carbon.
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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