Protein A is a structural component while Protein B is an enzyme. Which could be characteristics of Protein A and Protein B?  A. Protein A could have repetitive amino acid sequence while protein B be could have irregular amino acids. B. Protein B could be a type of collagen while Protein B could be a type of keratin. C. Protein A could be generally soluble in water while Protein B could be insoluble. D. Protein B could contain mainly αlpha-helix while Protein A could contain equal amounts of αlpha-helix and β-sheet. E. Protein A could be a globular protein while Protein B could be a fibrous protein.

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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.