I know this has been discussed before, but i was not paying attention. Could someone point me to references for MAC programs that can be used to view protein structures. Thanks in advance. stan Stanley R. Krystek, Jr., Ph.D. Bristol-Myers Squibb Pharmaceutical Research Institute Department of Macromolecular Modeling P.O. Box 4000, Room H.3812, Princeton, N.J. 08543-4000 (609) 252-4100 FAX: (609) 252-6030 INTERNET: krystek \\at// bms.com