What is the primary structure of a protein?

The primary structure of a protein is the sequence of amino acids linked together in a long chain.

Here’s a explanation:

1. Made of amino acids:
   Proteins are built from amino acids joined by peptide bonds.
2. Order matters:
   The exact order of amino acids (like beads on a string) determines how the protein will fold and what function it will have.
3. Held by strong bonds:
   The amino acids are connected by covalent peptide bonds, which are very strong and stable.
4. Example:
   A short chain like:
   Ala–Gly–Ser–Val–Leu
   represents the primary structure.

In short:
The primary structure of a protein is the specific sequence of amino acids in its chain — the foundation for all higher levels of protein structure.