In the alpha-helices, which of the following statement is NOT true? a. Backbone carbonyl oxygen of residue (i) hydrogen bonds to backbone NH of the fourth residue of chain of residue (i + 4). b. Side chains project out from an α-helix. c. Hydrogen bonds are almost straight and parallel to the helix axis. d. Helix has a macrodipole. e. The rise or advance per amino acid residue is 0.54 nm.
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.
In the alpha-helices, which of the following statement is NOT true?
Backbone carbonyl oxygen of residue (i) hydrogen bonds to backbone NH of the fourth residue of chain of residue (i + 4).
Side chains project out from an α-helix.
Hydrogen bonds are almost straight and parallel to the helix axis.
Helix has a macrodipole.
The rise or advance per amino acid residue is 0.54 nm.
Proteins are composed of amino acids that are attached together via peptide bonds. The linear chain of amino acids attached together is called the primary structure. Proteins also have secondary structures such as alpha-helix and beta-sheets.
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