The linear sequence of amino acids within a protein is considered the primary structure of the protein. Proteins are built from a set of only twenty amino acids, each of which has a unique side chain.

Proteins have four levels of structure: primary (amino acid sequence), secondary (local folding patterns like alpha helices and beta sheets), tertiary (overall 3D shape), and quaternary (assembly of ...

adding that “jackfruit is one of the highest-protein fruits available and though it’s still not a primary protein source, it does provide a decent amount while also delivering fiber ...

Yes, vegetables contain protein, although they are primary carbohydrates. While they may not be primary protein sources like ...

And research suggests that replacing those protein sources with nonmeat alternatives like legumes, nuts, whole grains and more can improve your health in the long run. Such swaps can also be ...

Given this statistic, it is not surprising that the primary control point for gene expression is usually at the very beginning of the protein production process — the initiation of transcription.