Protein arrays and microarrays

In the past, studies of protein activities have focused on studying a singl e protein at a time, which is often time-consuming and expensive. Recently, with the sequencing of entire genomes, large-scale proteome analysis has b egun. Arrays of proteins have been used for the determination of subcellula r localization, analysis of protein-protein interactions and biochemical an alysis of protein function. New protein-microarray technologies have been i ntroduced that enable the high-throughput analysis of protein activities. T hese have the potential to revolutionize the analysis of entire proteomes.