Orientations of Proteins in Membranes Database
- OPM of transmembrane, monotopic, peripheral polypeptides and their spatial arrangement in situ of PDB entries. Includes classification, 3D imagesand contacts at the University of Michigan, Ann Arbor.
- http://opm.phar.umich.edu/

Cancer Immunome Database
- resource maintained by the Ludwig Institute for Cancer Research, Academy of Cancer Immunology and European Cancer Immunome Program. [requires free registration]
- http://www2.licr.org/CancerImmunomeDB/

ExPASy: Swiss 2DPAGE
- Two-dimensional polyacrylamide gel electrophoresis database, including manual for mapping proteomes of different phyla.
- http://www.expasy.org/ch2d/

Plasma Proteome Database
- Resource for human plasma proteins along with their isoforms, specific expression, disease, localization, post translational modification and SNP. Includes FAQ, query interface, or browsing by structure or function.
- http://www.plasmaproteomedatabase.org/

Open Proteomics Database
- OPD is a public database for storing and disseminating data based on mass spectra, representing experiments on human, yeast, E. coli and Mycobacterium organisms. Includes related links maintained at the University of Texas.
- http://bioinformatics.icmb.utexas.edu/OPD/

Human Protein Reference Database
- HPRD offers a centralized platform to visualize domain architecture, post-translational modifications, interaction networks and disease association for each protein in the human proteome. Includes map of pathways and FAQ maintained by Johns Hopkins Univer
- http://www.hprd.org/