Practice question

Analytical protein microarrays, also known as capture arrays, are designed to profile protein abundance, interactions, and activity across proteome using immobilized antibodies or bait proteins. Sample proteins labeled or unlabeled are incubated, and binding patterns reveal protein-protein, protein-DNA, protein-drug, or enzyme-substrate interactions quantitatively. Unlike pure detection of single protein class, analytical format maps interactomes, cross-reactivity, and binding affinities in multiplexed manner. Techniques focusing only on RNA or DNA replication employ nucleic acid microarrays or sequencing, whereas analytical protein chips specialize in functional interaction landscape under native-like conditions.