Download Scaffold: http://www.proteomesoftware.com/
Immunology and Related Sciences
Association of Biomolecular Resource Facilities (ABRF)
American Society for Mass Spectrometry (ASMS)
FASEB-Federation of American Societies for Experimental Biology 
The largest coalition of life sciences societies in the United States, and represents over 42,000 biomedical and biological scientists.
National Center for Biotechnology Information (NCBI)
The NCBI is responsible for building, maintaining, and distributing GenBank, the NIH genetic sequence database that collects all known DNA sequences from scientists worldwide. The NCBI is a division of the National Library ofMedicine (NLM) and is located on the campus of the National Institutes of Health (NIH) in Bethesda, Maryland.
National Science Foundation World Wide Web Server
All NSF program announcements, publications, and program deadlines are available here. An NSF award database is also available.
Protein Data Bank (PDB)  
An archival computer database of three-dimensional structures of biological macromolecules. The database contains atomic coordinates, bibliographic citations, primary sequence and secondary structure information, as well as crystallographic structure factors and 2D-NMR experimental data. Information is available on protein, DNA, RNA, virus and carbohydrate structures.
SWISS-PROT Protein Sequence Database
Search the SWISS-PROT Protein Sequence Database and many other on-line databases including: SWISS-2DPAGE, SWISS-3DIMAGE, PROSITE, ENZYME, EMBL, PDB, FlyBase,REBASE, OMIM, Medline, GCRDb, MAizeDB. on-line analysis tools (sequence searches, a.a. comp., etc.) are also available here.
American Type Culture Collection (ATCC) Home Page
Community of Science
A collaborative network of scientists and their institutions—to accelerate science and promote the visibility and funding of scientific research.
ExPASy Protein Sequence Analysis Tools