Hi Eric, I'd try the following: 1) use SIMBAD to potentially find other/better models 2) use ISOLDE for model building - maybe ask Tristan Croll for help 3) submit your best model to the DALI server to retrieve closer models HTH, Kay -- Kay Diederichs http://strucbio.biologie.uni-konstanz.de email: [email protected] Tel +49 7531 88 4049 Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz This e-mail is digitally signed. If your e-mail client does not have the necessary capabilities, just ignore the attached signature "smime.p7s".