This site is still in the development phase. The site has information about assembling and distributing structural information about nucleic acids. Pfam - A database of protein domains and HMMs. This site has a large collection of multiple sequence alignments and hidden Markov models covering many common protein domains. It is broken down into several links that contain information on different protein families.
Fingerprints can encode protein folds and functionalities more effectively than single motifs.
There are also links to online analysis tools for sequence searches, etc. ProDom Protein Domain Database - The ProDom database have been designed as a tool to help analyze domain arrangements of proteins and protein families. Emphasis has been put on the graphical user interface that allows for interactive analysis of protein homology relationships. In the Search area, going to SearchLite allows for a simple keyword search. Proteins structure views include still images of ribbons and cylinders.