some answers are closer than you think:
Bleasby, A.J., Akrigg, D. and Attwood, T.K. (1994)
"OWL - A non-redundant, composite protein sequence database."
Nucleic Acids Research, 22 (17), 3574-3577.
DRAL, Warrington, Cheshire, UK.
But now at the Department of Biochemistry, University College London, UK.
http://www.biochem.ucl.ac.uk/bsm/dbbrowser/OWL/OWL.html
http://www.bioinf.man.ac.uk/dbbrowser/OWL/
Have fun,
Juri Rappsilber
Protein Interaction Laboratory
University of Southern Denmark