Final answer:
The primary structure of a protein is its unique sequence of amino acids linked by peptide bonds, essential for the protein's function.
Step-by-step explanation:
The primary structure of a protein refers to the unique sequence of amino acids that make up a polypeptide chain. The red text in the question highlights the positions of the peptide bonds that join these amino acids together to form the polypeptide chain.
The sequence of amino acids determines the protein's unique characteristics and functions, as exemplified by the insulin hormone, which is composed of two polypeptide chains, A and B, each with a specific amino acid sequence and linked by disulfide bonds.
The primary structure, being the simplest level of protein structure, is crucial as it sets the stage for higher levels of structural organization such as the secondary, tertiary, and quaternary structures, which contribute to a protein's three-dimensional shape and functional properties.
The primary structure of a protein refers to the amino acid sequence of its polypeptide chain(s). The amino acids are joined together by peptide or amide linkages.
These linkages form in condensation reactions during protein synthesis. The primary structure of a protein is crucial as it determines the overall shape and function of the protein.