Practice question

Protein microarray format enables simultaneous evaluation of thousands of interactions on single slide, providing high-throughput advantage over pairwise methods. By immobilizing purified proteins, antibodies, or peptides in arrayed spots, one incubation with labeled probe reveals many binding events in parallel, detecting protein-protein, protein-DNA, protein-lipid, or antibody-antigen interactions. Pull-down, electrophoretic mobility shift assay, and RT-PCR are low-throughput or targeted approaches. Microarray multiplexing drastically reduces sample, time, and reagent consumption, facilitating proteome-scale network mapping, biomarker profiling, and drug screening under standardized experimental conditions.