N-terminal domain

The N-terminal domain is the start portion of a protein, located at its beginning (the "N-terminus"). Proteins are made up of chains of amino acids, and this domain often plays a key role in determining the protein's function, guiding how it folds, interacts with other molecules, or attaches to specific locations in the cell. Think of it as a specialized module at the start of the protein that helps ensure the protein performs its proper role within the body.