N-Terminus Archives - THE SCIENCE NOTES

diagram showing the four levels of protein structure including primary amino acid sequence, secondary alpha helix and beta sheet, tertiary folded protein, and quaternary protein complex.

March 14, 2026 Biochemistry Biology

Protein Structure: The 4 Levels of Protein Organization Explained

Explore the four levels of protein structure, from primary amino acid sequences to complex 3D folding and multi-subunit quaternary complexes. Read more

Hand drawn diagram showing amino acid structure with amino group, carboxyl group, R group and categorized list of amino acids including nonpolar, polar, acidic and basic types.

March 14, 2026 Biochemistry Biology

Amino Acids and Proteins: Structure, Peptide Bond Formation, and Biological Functions

Proteins are polymers of amino acids linked by peptide bonds. Learn about protein structure, amino acids, peptide bond, and functions. Read more

Proteins and amino acids showing 3D protein folding, peptide bond formation, and primary, secondary, tertiary, and quaternary structures, with labeled amino acid side chains.

February 21, 2026 Biochemistry

Proteins and Amino Acids: Structure, Function, and Biological Importance

Proteins are the molecular machines of life. Every cell in every living organism depends on proteins to survive, grow, communicate, and respond to the environment.... Read more