A protein compound containing amino acids bound together with non-protein chemical groups, creating a conjugated protein.
From Greek 'hetero-' (different) and 'proteine' (primary substance), with the chemical suffix '-ide.' Emerged in biochemistry as scientists understood protein structure.
These are proteins that partnered up with other chemicals—like hemoglobin is a heteroproteide because it's a protein (globin) bonded to an iron-containing heme group, and that's what lets it carry oxygen in your blood!
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