Protein is the basic unit for realizing life activities, and the interaction between proteins is extremely important for the realization of biological functions. Functional sites and structural domains, as characteristic structures on proteins, have important biological significance. CD ComputaBio's work is based on protein functional sites, structural domain data, classify proteins, and examine the interaction of multiple proteins in each category with specific proteins. Compare the classification of proteins based on functional sites and domains with the classification results obtained from random experiments, Evaluate the enrichment characteristics of the interaction data corresponding to our classification. domain enrichment service https://www.computabio.com/domain-enrichment-service.html