Protein molecules are formed by amino acids.
Shape and Structure of Proteins
- These amino acids are joined to their neighbors by covalent peptide bonds to form a long chain that makes up a protein molecule.
- The term "polypeptide" is thus also used to describe proteins. From one molecule to the next, every form of the protein has a specific sequence of amino acids.
- The number of known proteins is in the tens of thousands, and each one has a unique amino acid sequence.
- The polypeptide backbone, which repeats along the central portion of the polypeptide chain, is referred to.
- The regions of the amino acids that do not contribute to the formation of a peptide bond and which confer distinctive features on each amino acid are joined to this repeated chain.
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