PIR
PIR - International Protein Sequence Database
Protein Sequence Databases
The RCSB Protein Data Bank
http://www.rcsb.org
http://expasy.nhri.org.tw
http://pir.georgetown.edu
Protein Data Bank
ExPASy Molecular Biology Server
The ExPASy (Expert Protein Analysis System) proteomics server of the Swiss Institute of Bioinformatics (SIB) is dedicated to the analysis of protein sequences and structures as well as 2-D PAGE.
                 
ExPASy Logo
Protein Sequence Analysis Tools
http://www.isb-sib.ch/