This spreadsheet allows one to predict the solubility of recombinant proteins in E. coli based on the amino acid content. A user types in the content of several amino acids and the spreadsheet predicts whether the protein will be soluble based on the method of Wilkinson and Harrison, as published in their paper "Predicting the solubility of recombinant proteins in Escherichia coli" Bio/Technology, vol. 9, p. 443-448 (1991). A few errors noted in this paper have been corrected, and the corrected model for protein solubility has been used in this spreadsheet. The spreadsheet is being emailed in two formats: 1. solupred.xl.hqx An .HQX encoded version for Excel 4.0 for the Macintosh 2. solupred.wk3.uue A uuencoded version for Lotus for DOS machines The original spreadsheet was sent to me by Dr. Roger Harrison of the University of Oklahoma, who asked my help in finding the spreadsheet a home on the Internet. I thought IUBio the best place to post it. I have made some slight modifications in the interface, the rest remains Dr. Harrison's work. Please feel free to contact me if I can supply any further information. Dan Diaz BL275@cleveland.freenet.edu