CDD: NCBI's conserved domain database

MMDB and VAST+: tracking structural similarities between macromolecular complexes

(2013) Thomas Madej et al.   NUCLEIC ACIDS RESEARCH

Pfam: the protein families database

(2013) Robert D. Finn et al.   NUCLEIC ACIDS RESEARCH

TIGRFAMs and Genome Properties in 2013

(2012) Daniel H. Haft et al.   NUCLEIC ACIDS RESEARCH

Annotation of functional sites with the Conserved Domain Database

(2012) M. K. Derbyshire et al.   Database-The Journal of Biological Databases and Curation

Novel β-Propeller of the BTB-Kelch Protein Krp1 Provides a Binding Site for Lasp-1 That Is Necessary for Pseudopodial Extension

(2009) Christopher H. Gray et al.   JOURNAL OF BIOLOGICAL CHEMISTRY

The National Center for Biotechnology Information's Protein Clusters Database

(2008) William Klimke et al.   NUCLEIC ACIDS RESEARCH