Primary Structure

Primary Structure

The sequence of amino acids in a polypeptide chain.

Peptide Combinations

The vast potential number of combinations of peptides that can form using 20 different amino acids.

Native Conformations

Variations of proteins that exhibit biological activity.

Insulin

A hormone from the pancreas that regulates blood sugar levels, comprising two polypeptide chains linked by disulfide bonds.

Tertiary Structure

The three-dimensional shape of a protein, determined by the specific order of amino acids.

Variations in Insulin

Differences in the amino acid sequence of insulin between humans and other species such as cows and hogs, affecting its function.

Amino Acid Sequence

The exact order of amino acids in a protein that is crucial for determining its structure and biological activity.

Vasopressin and Oxytocin

Examples of molecules that illustrate the importance of amino acid sequence in determining biological activity, despite their structural similarities.