Predicted domain interactions using K-GIDDI's methods [Liu, M., X. W. Chen, et al. (2009). "Knowledge-guided inference of domain-domain interactions from incomplete protein-protein interaction networks." Bioinformatics 25(19): 2492-2499.]
CDD is a protein annotation resource that consists of a collection of well-annotated multiple sequence alignment models for ancient domains and full-length proteins
InterDom is a database of putative interacting protein domains derived from multiple sources, ranging from domain fusions (Rosetta Stone), protein interactions (DIP and BIND), protein complexes (PDB), to scientific literature (MEDLINE).