From this site you can:

• Browse the NMPdb
• Search for entries in NMPdb
• Download NMPdb and NMPdb(hom)
• Find out how to use NMPdb
• See an example entry of NMPdb

Please refer to the following paper when using the NMP-db for your results:

Mika S., Rost B.
NMPdb: database of Nuclear-Matrix Proteins
Nucleic Acids Research (submitted)