For sites where the primary focus is on three dimensional structure, consider Proteins and Enzymes: Structure.
more information (editors only)
Sites for books, literature reviews, journals and newsletters, with contents primarily on the structural aspects of proteins, and their structure activity relationships.
Sites promoting Books are not normally listed in ODP unless there is substantial content; at least one sample chapter readable on the site.
Sites for proteins that have not required genetically modified organisms, or cell-free expression systems should be submitted to the Business . . Proteins category.
Sites exclusively about proteins for biotherapeutic or other medical use should be submitted to links or a sub-category of Biopharmaceuticals.